Move ExtUI subfolders up a level (#21820)

Marlin/src/lcd/extui/dgus/DGUSDisplay.cpp

@@ -0,0 +1,271 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../../inc/MarlinConfigPre.h"
+
+#if HAS_DGUS_LCD
+
+#if HOTENDS > 2
+  #warning "More than 2 hotends not implemented on DGUS Display UI."
+#endif
+
+#include "../ui_api.h"
+
+#include "../../../MarlinCore.h"
+#include "../../../module/motion.h"
+#include "../../../gcode/queue.h"
+#include "../../../module/planner.h"
+#include "../../../libs/duration_t.h"
+#include "../../../module/printcounter.h"
+#if ENABLED(POWER_LOSS_RECOVERY)
+  #include "../../../feature/powerloss.h"
+#endif
+
+#include "DGUSDisplay.h"
+#include "DGUSVPVariable.h"
+#include "DGUSDisplayDef.h"
+
+DGUSDisplay dgusdisplay;
+
+// Preamble... 2 Bytes, usually 0x5A 0xA5, but configurable
+constexpr uint8_t DGUS_HEADER1 = 0x5A;
+constexpr uint8_t DGUS_HEADER2 = 0xA5;
+
+constexpr uint8_t DGUS_CMD_WRITEVAR = 0x82;
+constexpr uint8_t DGUS_CMD_READVAR = 0x83;
+
+#if ENABLED(DEBUG_DGUSLCD)
+  bool dguslcd_local_debug; // = false;
+#endif
+
+void DGUSDisplay::InitDisplay() {
+  #ifndef LCD_BAUDRATE
+    #define LCD_BAUDRATE 115200
+  #endif
+  LCD_SERIAL.begin(LCD_BAUDRATE);
+
+  if (TERN1(POWER_LOSS_RECOVERY, !recovery.valid())) {  // If no Power-Loss Recovery is needed...
+    TERN_(DGUS_LCD_UI_MKS, delay(LOGO_TIME_DELAY));     // Show the logo for a little while
+  }
+
+  RequestScreen(TERN(SHOW_BOOTSCREEN, DGUSLCD_SCREEN_BOOT, DGUSLCD_SCREEN_MAIN));
+}
+
+void DGUSDisplay::WriteVariable(uint16_t adr, const void *values, uint8_t valueslen, bool isstr) {
+  const char* myvalues = static_cast<const char*>(values);
+  bool strend = !myvalues;
+  WriteHeader(adr, DGUS_CMD_WRITEVAR, valueslen);
+  while (valueslen--) {
+    char x;
+    if (!strend) x = *myvalues++;
+    if ((isstr && !x) || strend) {
+      strend = true;
+      x = ' ';
+    }
+    LCD_SERIAL.write(x);
+  }
+}
+
+void DGUSDisplay::WriteVariable(uint16_t adr, uint16_t value) {
+  value = (value & 0xFFU) << 8U | (value >> 8U);
+  WriteVariable(adr, static_cast<const void*>(&value), sizeof(uint16_t));
+}
+
+void DGUSDisplay::WriteVariable(uint16_t adr, int16_t value) {
+  value = (value & 0xFFU) << 8U | (value >> 8U);
+  WriteVariable(adr, static_cast<const void*>(&value), sizeof(uint16_t));
+}
+
+void DGUSDisplay::WriteVariable(uint16_t adr, uint8_t value) {
+  WriteVariable(adr, static_cast<const void*>(&value), sizeof(uint8_t));
+}
+
+void DGUSDisplay::WriteVariable(uint16_t adr, int8_t value) {
+  WriteVariable(adr, static_cast<const void*>(&value), sizeof(int8_t));
+}
+
+#if ENABLED(DGUS_LCD_UI_MKS)
+  void DGUSDisplay::MKS_WriteVariable(uint16_t adr, uint8_t value) {
+    WriteVariable(adr, static_cast<const void *>(&value), sizeof(uint8_t));
+  }
+#endif
+
+void DGUSDisplay::WriteVariable(uint16_t adr, long value) {
+  union { long l; char lb[4]; } endian;
+  char tmp[4];
+  endian.l = value;
+  tmp[0] = endian.lb[3];
+  tmp[1] = endian.lb[2];
+  tmp[2] = endian.lb[1];
+  tmp[3] = endian.lb[0];
+  WriteVariable(adr, static_cast<const void*>(&tmp), sizeof(long));
+}
+
+void DGUSDisplay::WriteVariablePGM(uint16_t adr, const void *values, uint8_t valueslen, bool isstr) {
+  const char* myvalues = static_cast<const char*>(values);
+  bool strend = !myvalues;
+  WriteHeader(adr, DGUS_CMD_WRITEVAR, valueslen);
+  while (valueslen--) {
+    char x;
+    if (!strend) x = pgm_read_byte(myvalues++);
+    if ((isstr && !x) || strend) {
+      strend = true;
+      x = ' ';
+    }
+    LCD_SERIAL.write(x);
+  }
+}
+
+void DGUSDisplay::ProcessRx() {
+
+  #if ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS)
+    if (!LCD_SERIAL.available() && LCD_SERIAL.buffer_overruns()) {
+      // Overrun, but reset the flag only when the buffer is empty
+      // We want to extract as many as valid datagrams possible...
+      DEBUG_ECHOPGM("OVFL");
+      rx_datagram_state = DGUS_IDLE;
+      //LCD_SERIAL.reset_rx_overun();
+      LCD_SERIAL.flush();
+    }
+  #endif
+
+  uint8_t receivedbyte;
+  while (LCD_SERIAL.available()) {
+    switch (rx_datagram_state) {
+
+      case DGUS_IDLE: // Waiting for the first header byte
+        receivedbyte = LCD_SERIAL.read();
+        //DEBUG_ECHOPAIR("< ",x);
+        if (DGUS_HEADER1 == receivedbyte) rx_datagram_state = DGUS_HEADER1_SEEN;
+        break;
+
+      case DGUS_HEADER1_SEEN: // Waiting for the second header byte
+        receivedbyte = LCD_SERIAL.read();
+        //DEBUG_ECHOPAIR(" ",x);
+        rx_datagram_state = (DGUS_HEADER2 == receivedbyte) ? DGUS_HEADER2_SEEN : DGUS_IDLE;
+        break;
+
+      case DGUS_HEADER2_SEEN: // Waiting for the length byte
+        rx_datagram_len = LCD_SERIAL.read();
+        DEBUG_ECHOPAIR(" (", rx_datagram_len, ") ");
+
+        // Telegram min len is 3 (command and one word of payload)
+        rx_datagram_state = WITHIN(rx_datagram_len, 3, DGUS_RX_BUFFER_SIZE) ? DGUS_WAIT_TELEGRAM : DGUS_IDLE;
+        break;
+
+      case DGUS_WAIT_TELEGRAM: // wait for complete datagram to arrive.
+        if (LCD_SERIAL.available() < rx_datagram_len) return;
+
+        Initialized = true; // We've talked to it, so we defined it as initialized.
+        uint8_t command = LCD_SERIAL.read();
+
+        DEBUG_ECHOPAIR("# ", command);
+
+        uint8_t readlen = rx_datagram_len - 1;  // command is part of len.
+        unsigned char tmp[rx_datagram_len - 1];
+        unsigned char *ptmp = tmp;
+        while (readlen--) {
+          receivedbyte = LCD_SERIAL.read();
+          DEBUG_ECHOPAIR(" ", receivedbyte);
+          *ptmp++ = receivedbyte;
+        }
+        DEBUG_ECHOPGM(" # ");
+        // mostly we'll get this: 5A A5 03 82 4F 4B -- ACK on 0x82, so discard it.
+        if (command == DGUS_CMD_WRITEVAR && 'O' == tmp[0] && 'K' == tmp[1]) {
+          DEBUG_ECHOLNPGM(">");
+          rx_datagram_state = DGUS_IDLE;
+          break;
+        }
+
+        /* AutoUpload, (and answer to) Command 0x83 :
+        |      tmp[0  1  2  3  4 ... ]
+        | Example 5A A5 06 83 20 01 01 78 01 ……
+        |          / /  |  |   \ /   |  \     \
+        |        Header |  |    |    |   \_____\_ DATA (Words!)
+        |     DatagramLen  /  VPAdr  |
+        |           Command          DataLen (in Words) */
+        if (command == DGUS_CMD_READVAR) {
+          const uint16_t vp = tmp[0] << 8 | tmp[1];
+          //const uint8_t dlen = tmp[2] << 1;  // Convert to Bytes. (Display works with words)
+          //DEBUG_ECHOPAIR(" vp=", vp, " dlen=", dlen);
+          DGUS_VP_Variable ramcopy;
+          if (populate_VPVar(vp, &ramcopy)) {
+            if (ramcopy.set_by_display_handler)
+              ramcopy.set_by_display_handler(ramcopy, &tmp[3]);
+            else
+              DEBUG_ECHOLNPGM(" VPVar found, no handler.");
+          }
+          else
+            DEBUG_ECHOLNPAIR(" VPVar not found:", vp);
+
+          rx_datagram_state = DGUS_IDLE;
+          break;
+        }
+
+      // discard anything else
+      rx_datagram_state = DGUS_IDLE;
+    }
+  }
+}
+
+size_t DGUSDisplay::GetFreeTxBuffer() { return SERIAL_GET_TX_BUFFER_FREE(); }
+
+void DGUSDisplay::WriteHeader(uint16_t adr, uint8_t cmd, uint8_t payloadlen) {
+  LCD_SERIAL.write(DGUS_HEADER1);
+  LCD_SERIAL.write(DGUS_HEADER2);
+  LCD_SERIAL.write(payloadlen + 3);
+  LCD_SERIAL.write(cmd);
+  LCD_SERIAL.write(adr >> 8);
+  LCD_SERIAL.write(adr & 0xFF);
+}
+
+void DGUSDisplay::WritePGM(const char str[], uint8_t len) {
+  while (len--) LCD_SERIAL.write(pgm_read_byte(str++));
+}
+
+void DGUSDisplay::loop() {
+  // protect against recursion… ProcessRx() may indirectly call idle() when injecting gcode commands.
+  if (!no_reentrance) {
+    no_reentrance = true;
+    ProcessRx();
+    no_reentrance = false;
+  }
+}
+
+rx_datagram_state_t DGUSDisplay::rx_datagram_state = DGUS_IDLE;
+uint8_t DGUSDisplay::rx_datagram_len = 0;
+bool DGUSDisplay::Initialized = false;
+bool DGUSDisplay::no_reentrance = false;
+
+// A SW memory barrier, to ensure GCC does not overoptimize loops
+#define sw_barrier() asm volatile("": : :"memory");
+
+bool populate_VPVar(const uint16_t VP, DGUS_VP_Variable * const ramcopy) {
+  // DEBUG_ECHOPAIR("populate_VPVar ", VP);
+  const DGUS_VP_Variable *pvp = DGUSLCD_FindVPVar(VP);
+  // DEBUG_ECHOLNPAIR(" pvp ", (uint16_t )pvp);
+  if (!pvp) return false;
+  memcpy_P(ramcopy, pvp, sizeof(DGUS_VP_Variable));
+  return true;
+}
+
+#endif // HAS_DGUS_LCD

Marlin/src/lcd/extui/dgus/DGUSDisplay.h

@@ -0,0 +1,123 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * lcd/extui/dgus/DGUSDisplay.h
+ */
+
+#include "../../../inc/MarlinConfigPre.h"
+
+#include <stdlib.h>    // size_t
+
+#if HAS_BED_PROBE
+  #include "../../../module/probe.h"
+#endif
+#include "DGUSVPVariable.h"
+
+enum DGUSLCD_Screens : uint8_t;
+
+//#define DEBUG_DGUSLCD
+#define DEBUG_OUT ENABLED(DEBUG_DGUSLCD)
+#include "../../../core/debug_out.h"
+
+typedef enum : uint8_t {
+  DGUS_IDLE,           //< waiting for DGUS_HEADER1.
+  DGUS_HEADER1_SEEN,   //< DGUS_HEADER1 received
+  DGUS_HEADER2_SEEN,   //< DGUS_HEADER2 received
+  DGUS_WAIT_TELEGRAM,  //< LEN received, Waiting for to receive all bytes.
+} rx_datagram_state_t;
+
+// Low-Level access to the display.
+class DGUSDisplay {
+public:
+
+  DGUSDisplay() = default;
+
+  static void InitDisplay();
+
+  // Variable access.
+  static void WriteVariable(uint16_t adr, const void *values, uint8_t valueslen, bool isstr=false);
+  static void WriteVariablePGM(uint16_t adr, const void *values, uint8_t valueslen, bool isstr=false);
+  static void WriteVariable(uint16_t adr, int16_t value);
+  static void WriteVariable(uint16_t adr, uint16_t value);
+  static void WriteVariable(uint16_t adr, uint8_t value);
+  static void WriteVariable(uint16_t adr, int8_t value);
+  static void WriteVariable(uint16_t adr, long value);
+  static void MKS_WriteVariable(uint16_t adr, uint8_t value);
+
+
+  // Utility functions for bridging ui_api and dbus
+  template<typename T, float(*Getter)(const T), T selector, typename WireType=uint16_t>
+  static void SetVariable(DGUS_VP_Variable &var) {
+    WriteVariable(var.VP, (WireType)Getter(selector));
+  }
+
+  template<typename T, void(*Setter)(const float V, const T), T selector>
+  static void GetVariable(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t newvalue = swap16(*(uint16_t*)val_ptr);
+    Setter(newvalue, selector);
+  }
+
+  // Until now I did not need to actively read from the display. That's why there is no ReadVariable
+  // (I extensively use the auto upload of the display)
+
+  // Force display into another screen.
+  // (And trigger update of containing VPs)
+  // (to implement a pop up message, which may not be nested)
+  static void RequestScreen(DGUSLCD_Screens screen);
+
+  // Periodic tasks, eg. Rx-Queue handling.
+  static void loop();
+
+public:
+  // Helper for users of this class to estimate if an interaction would be blocking.
+  static size_t GetFreeTxBuffer();
+
+  // Checks two things: Can we confirm the presence of the display and has we initiliazed it.
+  // (both boils down that the display answered to our chatting)
+  static inline bool isInitialized() { return Initialized; }
+
+private:
+  static void WriteHeader(uint16_t adr, uint8_t cmd, uint8_t payloadlen);
+  static void WritePGM(const char str[], uint8_t len);
+  static void ProcessRx();
+
+  static inline uint16_t swap16(const uint16_t value) { return (value & 0xFFU) << 8U | (value >> 8U); }
+  static rx_datagram_state_t rx_datagram_state;
+  static uint8_t rx_datagram_len;
+  static bool Initialized, no_reentrance;
+};
+
+#define GET_VARIABLE(f, t, V...) (&DGUSDisplay::GetVariable<decltype(t), f, t, ##V>)
+#define SET_VARIABLE(f, t, V...) (&DGUSDisplay::SetVariable<decltype(t), f, t, ##V>)
+
+extern DGUSDisplay dgusdisplay;
+
+// compile-time x^y
+constexpr float cpow(const float x, const int y) { return y == 0 ? 1.0 : x * cpow(x, y - 1); }
+
+/// Find the flash address of a DGUS_VP_Variable for the VP.
+const DGUS_VP_Variable* DGUSLCD_FindVPVar(const uint16_t vp);
+
+/// Helper to populate a DGUS_VP_Variable for a given VP. Return false if not found.
+bool populate_VPVar(const uint16_t VP, DGUS_VP_Variable * const ramcopy);

Marlin/src/lcd/extui/dgus/DGUSDisplayDef.h

@@ -0,0 +1,57 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * lcd/extui/dgus/DGUSDisplayDef.h
+ * Defines the interaction between Marlin and the display firmware
+ */
+
+#include "DGUSVPVariable.h"
+
+#include <stdint.h>
+
+// Information on which screen which VP is displayed.
+// As this is a sparse table, two arrays are needed:
+// one to list the VPs of one screen and one to map screens to the lists.
+// (Strictly this would not be necessary, but allows to only send data the display needs and reducing load on Marlin)
+struct VPMapping {
+  const uint8_t screen;
+  const uint16_t *VPList;  // The list is null-terminated.
+};
+
+extern const struct VPMapping VPMap[];
+
+// List of VPs handled by Marlin / The Display.
+extern const struct DGUS_VP_Variable ListOfVP[];
+
+#include "../../../inc/MarlinConfig.h"
+
+#if ENABLED(DGUS_LCD_UI_ORIGIN)
+  #include "origin/DGUSDisplayDef.h"
+#elif ENABLED(DGUS_LCD_UI_MKS)
+  #include "mks/DGUSDisplayDef.h"
+#elif ENABLED(DGUS_LCD_UI_FYSETC)
+  #include "fysetc/DGUSDisplayDef.h"
+#elif ENABLED(DGUS_LCD_UI_HIPRECY)
+  #include "hiprecy/DGUSDisplayDef.h"
+#endif

Marlin/src/lcd/extui/dgus/DGUSScreenHandler.cpp

@@ -0,0 +1,777 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../../inc/MarlinConfigPre.h"
+
+#if HAS_DGUS_LCD
+
+#include "DGUSScreenHandler.h"
+
+#include "../../../MarlinCore.h"
+#include "../../../gcode/queue.h"
+#include "../../../libs/duration_t.h"
+#include "../../../module/settings.h"
+#include "../../../module/temperature.h"
+#include "../../../module/motion.h"
+#include "../../../module/planner.h"
+#include "../../../module/printcounter.h"
+#include "../../../sd/cardreader.h"
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+  #include "../../../feature/powerloss.h"
+#endif
+
+DGUSScreenHandler ScreenHandler;
+
+uint16_t DGUSScreenHandler::ConfirmVP;
+
+DGUSLCD_Screens DGUSScreenHandler::current_screen;
+DGUSLCD_Screens DGUSScreenHandler::past_screens[NUM_PAST_SCREENS];
+uint8_t DGUSScreenHandler::update_ptr;
+uint16_t DGUSScreenHandler::skipVP;
+bool DGUSScreenHandler::ScreenComplete;
+
+void (*DGUSScreenHandler::confirm_action_cb)() = nullptr;
+
+#if ENABLED(SDSUPPORT)
+  int16_t DGUSScreenHandler::top_file = 0,
+          DGUSScreenHandler::file_to_print = 0;
+  static ExtUI::FileList filelist;
+#endif
+
+#if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+  filament_data_t filament_data;
+#endif
+
+void DGUSScreenHandler::sendinfoscreen(const char *line1, const char *line2, const char *line3, const char *line4, bool l1inflash, bool l2inflash, bool l3inflash, bool l4inflash) {
+  DGUS_VP_Variable ramcopy;
+  if (populate_VPVar(VP_MSGSTR1, &ramcopy)) {
+    ramcopy.memadr = (void*) line1;
+    l1inflash ? DGUSScreenHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenHandler::DGUSLCD_SendStringToDisplay(ramcopy);
+  }
+  if (populate_VPVar(VP_MSGSTR2, &ramcopy)) {
+    ramcopy.memadr = (void*) line2;
+    l2inflash ? DGUSScreenHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenHandler::DGUSLCD_SendStringToDisplay(ramcopy);
+  }
+  if (populate_VPVar(VP_MSGSTR3, &ramcopy)) {
+    ramcopy.memadr = (void*) line3;
+    l3inflash ? DGUSScreenHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenHandler::DGUSLCD_SendStringToDisplay(ramcopy);
+  }
+  if (populate_VPVar(VP_MSGSTR4, &ramcopy)) {
+    ramcopy.memadr = (void*) line4;
+    l4inflash ? DGUSScreenHandler::DGUSLCD_SendStringToDisplayPGM(ramcopy) : DGUSScreenHandler::DGUSLCD_SendStringToDisplay(ramcopy);
+  }
+}
+
+void DGUSScreenHandler::HandleUserConfirmationPopUp(uint16_t VP, const char *line1, const char *line2, const char *line3, const char *line4, bool l1, bool l2, bool l3, bool l4) {
+  if (current_screen == DGUSLCD_SCREEN_CONFIRM) // Already showing a pop up, so we need to cancel that first.
+    PopToOldScreen();
+
+  ConfirmVP = VP;
+  sendinfoscreen(line1, line2, line3, line4, l1, l2, l3, l4);
+  GotoScreen(DGUSLCD_SCREEN_CONFIRM);
+}
+
+void DGUSScreenHandler::setstatusmessage(const char *msg) {
+  DGUS_VP_Variable ramcopy;
+  if (populate_VPVar(VP_M117, &ramcopy)) {
+    ramcopy.memadr = (void*) msg;
+    DGUSLCD_SendStringToDisplay(ramcopy);
+  }
+}
+
+void DGUSScreenHandler::setstatusmessagePGM(PGM_P const msg) {
+  DGUS_VP_Variable ramcopy;
+  if (populate_VPVar(VP_M117, &ramcopy)) {
+    ramcopy.memadr = (void*) msg;
+    DGUSLCD_SendStringToDisplayPGM(ramcopy);
+  }
+}
+
+// Send an 8 bit or 16 bit value to the display.
+void DGUSScreenHandler::DGUSLCD_SendWordValueToDisplay(DGUS_VP_Variable &var) {
+  if (var.memadr) {
+    //DEBUG_ECHOPAIR(" DGUS_LCD_SendWordValueToDisplay ", var.VP);
+    //DEBUG_ECHOLNPAIR(" data ", *(uint16_t *)var.memadr);
+    if (var.size > 1)
+      dgusdisplay.WriteVariable(var.VP, *(int16_t*)var.memadr);
+    else
+      dgusdisplay.WriteVariable(var.VP, *(int8_t*)var.memadr);
+  }
+}
+
+// Send an uint8_t between 0 and 255 to the display, but scale to a percentage (0..100)
+void DGUSScreenHandler::DGUSLCD_SendPercentageToDisplay(DGUS_VP_Variable &var) {
+  if (var.memadr) {
+    //DEBUG_ECHOPAIR(" DGUS_LCD_SendWordValueToDisplay ", var.VP);
+    //DEBUG_ECHOLNPAIR(" data ", *(uint16_t *)var.memadr);
+    uint16_t tmp = *(uint8_t *) var.memadr + 1; // +1 -> avoid rounding issues for the display.
+    tmp = map(tmp, 0, 255, 0, 100);
+    dgusdisplay.WriteVariable(var.VP, tmp);
+  }
+}
+
+// Send the current print progress to the display.
+void DGUSScreenHandler::DGUSLCD_SendPrintProgressToDisplay(DGUS_VP_Variable &var) {
+  //DEBUG_ECHOPAIR(" DGUSLCD_SendPrintProgressToDisplay ", var.VP);
+  uint16_t tmp = ExtUI::getProgress_percent();
+  //DEBUG_ECHOLNPAIR(" data ", tmp);
+  dgusdisplay.WriteVariable(var.VP, tmp);
+}
+
+// Send the current print time to the display.
+// It is using a hex display for that: It expects BSD coded data in the format xxyyzz
+void DGUSScreenHandler::DGUSLCD_SendPrintTimeToDisplay(DGUS_VP_Variable &var) {
+  duration_t elapsed = print_job_timer.duration();
+  char buf[32];
+  elapsed.toString(buf);
+  dgusdisplay.WriteVariable(VP_PrintTime, buf, var.size, true);
+}
+
+// Send an uint8_t between 0 and 100 to a variable scale to 0..255
+void DGUSScreenHandler::DGUSLCD_PercentageToUint8(DGUS_VP_Variable &var, void *val_ptr) {
+  if (var.memadr) {
+    uint16_t value = swap16(*(uint16_t*)val_ptr);
+    DEBUG_ECHOLNPAIR("FAN value get:", value);
+    *(uint8_t*)var.memadr = map(constrain(value, 0, 100), 0, 100, 0, 255);
+    DEBUG_ECHOLNPAIR("FAN value change:", *(uint8_t*)var.memadr);
+  }
+}
+
+// Sends a (RAM located) string to the DGUS Display
+// (Note: The DGUS Display does not clear after the \0, you have to
+// overwrite the remainings with spaces.// var.size has the display buffer size!
+void DGUSScreenHandler::DGUSLCD_SendStringToDisplay(DGUS_VP_Variable &var) {
+  char *tmp = (char*) var.memadr;
+  dgusdisplay.WriteVariable(var.VP, tmp, var.size, true);
+}
+
+// Sends a (flash located) string to the DGUS Display
+// (Note: The DGUS Display does not clear after the \0, you have to
+// overwrite the remainings with spaces.// var.size has the display buffer size!
+void DGUSScreenHandler::DGUSLCD_SendStringToDisplayPGM(DGUS_VP_Variable &var) {
+  char *tmp = (char*) var.memadr;
+  dgusdisplay.WriteVariablePGM(var.VP, tmp, var.size, true);
+}
+
+#if HAS_PID_HEATING
+  void DGUSScreenHandler::DGUSLCD_SendTemperaturePID(DGUS_VP_Variable &var) {
+    float value = *(float *)var.memadr;
+    value /= 10;
+    float valuesend = 0;
+    switch (var.VP) {
+      default: return;
+      #if HOTENDS >= 1
+        case VP_E0_PID_P: valuesend = value; break;
+        case VP_E0_PID_I: valuesend = unscalePID_i(value); break;
+        case VP_E0_PID_D: valuesend = unscalePID_d(value); break;
+      #endif
+      #if HOTENDS >= 2
+        case VP_E1_PID_P: valuesend = value; break;
+        case VP_E1_PID_I: valuesend = unscalePID_i(value); break;
+        case VP_E1_PID_D: valuesend = unscalePID_d(value); break;
+      #endif
+      #if HAS_HEATED_BED
+        case VP_BED_PID_P: valuesend = value; break;
+        case VP_BED_PID_I: valuesend = unscalePID_i(value); break;
+        case VP_BED_PID_D: valuesend = unscalePID_d(value); break;
+      #endif
+    }
+
+    valuesend *= cpow(10, 1);
+    union { int16_t i; char lb[2]; } endian;
+
+    char tmp[2];
+    endian.i = valuesend;
+    tmp[0] = endian.lb[1];
+    tmp[1] = endian.lb[0];
+    dgusdisplay.WriteVariable(var.VP, tmp, 2);
+  }
+#endif
+
+#if ENABLED(PRINTCOUNTER)
+
+  // Send the accumulate print time to the display.
+  // It is using a hex display for that: It expects BSD coded data in the format xxyyzz
+  void DGUSScreenHandler::DGUSLCD_SendPrintAccTimeToDisplay(DGUS_VP_Variable &var) {
+    printStatistics state = print_job_timer.getStats();
+    char buf[22];
+    duration_t elapsed = state.printTime;
+    elapsed.toString(buf);
+    dgusdisplay.WriteVariable(VP_PrintAccTime, buf, var.size, true);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SendPrintsTotalToDisplay(DGUS_VP_Variable &var) {
+    printStatistics state = print_job_timer.getStats();
+    char buf[10];
+    sprintf_P(buf, PSTR("%u"), state.totalPrints);
+    dgusdisplay.WriteVariable(VP_PrintsTotal, buf, var.size, true);
+  }
+
+#endif
+
+// Send fan status value to the display.
+#if HAS_FAN
+
+  void DGUSScreenHandler::DGUSLCD_SendFanStatusToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      DEBUG_ECHOPAIR(" DGUSLCD_SendFanStatusToDisplay ", var.VP);
+      DEBUG_ECHOLNPAIR(" data ", *(uint8_t *)var.memadr);
+      uint16_t data_to_send = 0;
+      if (*(uint8_t *) var.memadr) data_to_send = 1;
+      dgusdisplay.WriteVariable(var.VP, data_to_send);
+    }
+  }
+
+#endif
+
+// Send heater status value to the display.
+void DGUSScreenHandler::DGUSLCD_SendHeaterStatusToDisplay(DGUS_VP_Variable &var) {
+  if (var.memadr) {
+    DEBUG_ECHOPAIR(" DGUSLCD_SendHeaterStatusToDisplay ", var.VP);
+    DEBUG_ECHOLNPAIR(" data ", *(int16_t *)var.memadr);
+    uint16_t data_to_send = 0;
+    if (*(int16_t *) var.memadr) data_to_send = 1;
+    dgusdisplay.WriteVariable(var.VP, data_to_send);
+  }
+}
+
+#if ENABLED(DGUS_UI_WAITING)
+
+  void DGUSScreenHandler::DGUSLCD_SendWaitingStatusToDisplay(DGUS_VP_Variable &var) {
+    // In FYSETC UI design there are 10 statuses to loop
+    static uint16_t period = 0;
+    static uint16_t index = 0;
+    //DEBUG_ECHOPAIR(" DGUSLCD_SendWaitingStatusToDisplay ", var.VP);
+    //DEBUG_ECHOLNPAIR(" data ", swap16(index));
+    if (period++ > DGUS_UI_WAITING_STATUS_PERIOD) {
+      dgusdisplay.WriteVariable(var.VP, index);
+      //DEBUG_ECHOLNPAIR(" data ", swap16(index));
+      if (++index >= DGUS_UI_WAITING_STATUS) index = 0;
+      period = 0;
+    }
+  }
+
+#endif
+
+#if ENABLED(SDSUPPORT)
+
+  void DGUSScreenHandler::ScreenChangeHookIfSD(DGUS_VP_Variable &var, void *val_ptr) {
+    // default action executed when there is a SD card, but not printing
+    if (ExtUI::isMediaInserted() && !ExtUI::isPrintingFromMedia()) {
+      ScreenChangeHook(var, val_ptr);
+      dgusdisplay.RequestScreen(current_screen);
+      return;
+    }
+
+    // if we are printing, we jump to two screens after the requested one.
+    // This should host e.g a print pause / print abort / print resume dialog.
+    // This concept allows to recycle this hook for other file
+    if (ExtUI::isPrintingFromMedia() && !card.flag.abort_sd_printing) {
+      GotoScreen(DGUSLCD_SCREEN_SDPRINTMANIPULATION);
+      return;
+    }
+
+    // Don't let the user in the dark why there is no reaction.
+    if (!ExtUI::isMediaInserted()) {
+      setstatusmessagePGM(GET_TEXT(MSG_NO_MEDIA));
+      return;
+    }
+    if (card.flag.abort_sd_printing) {
+      setstatusmessagePGM(GET_TEXT(MSG_MEDIA_ABORTING));
+      return;
+    }
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_ScrollFilelist(DGUS_VP_Variable& var, void *val_ptr) {
+    auto old_top = top_file;
+    const int16_t scroll = (int16_t)swap16(*(uint16_t*)val_ptr);
+    if (scroll) {
+      top_file += scroll;
+      DEBUG_ECHOPAIR("new topfile calculated:", top_file);
+      if (top_file < 0) {
+        top_file = 0;
+        DEBUG_ECHOLNPGM("Top of filelist reached");
+      }
+      else {
+        int16_t max_top = filelist.count() -  DGUS_SD_FILESPERSCREEN;
+        NOLESS(max_top, 0);
+        NOMORE(top_file, max_top);
+      }
+      DEBUG_ECHOPAIR("new topfile adjusted:", top_file);
+    }
+    else if (!filelist.isAtRootDir()) {
+      IF_DISABLED(DGUS_LCD_UI_MKS, filelist.upDir());
+      top_file = 0;
+      ForceCompleteUpdate();
+    }
+
+    if (old_top != top_file) ForceCompleteUpdate();
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_ReallyAbort(DGUS_VP_Variable &var, void *val_ptr) {
+    ExtUI::stopPrint();
+    GotoScreen(DGUSLCD_SCREEN_MAIN);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_PrintTune(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!ExtUI::isPrintingFromMedia()) return; // avoid race condition when user stays in this menu and printer finishes.
+    GotoScreen(DGUSLCD_SCREEN_SDPRINTTUNE);
+  }
+
+  void DGUSScreenHandler::SDCardError() {
+    DGUSScreenHandler::SDCardRemoved();
+    sendinfoscreen(PSTR("NOTICE"), nullptr, PSTR("SD card error"), nullptr, true, true, true, true);
+    SetupConfirmAction(nullptr);
+    GotoScreen(DGUSLCD_SCREEN_POPUP);
+  }
+#endif // SDSUPPORT
+
+void DGUSScreenHandler::ScreenConfirmedOK(DGUS_VP_Variable &var, void *val_ptr) {
+  DGUS_VP_Variable ramcopy;
+  if (!populate_VPVar(ConfirmVP, &ramcopy)) return;
+  if (ramcopy.set_by_display_handler) ramcopy.set_by_display_handler(ramcopy, val_ptr);
+}
+
+const uint16_t* DGUSLCD_FindScreenVPMapList(uint8_t screen) {
+  const uint16_t *ret;
+  const struct VPMapping *map = VPMap;
+  while ((ret = (uint16_t*) pgm_read_ptr(&(map->VPList)))) {
+    if (pgm_read_byte(&(map->screen)) == screen) return ret;
+    map++;
+  }
+  return nullptr;
+}
+
+const DGUS_VP_Variable* DGUSLCD_FindVPVar(const uint16_t vp) {
+  const DGUS_VP_Variable *ret = ListOfVP;
+  do {
+    const uint16_t vpcheck = pgm_read_word(&(ret->VP));
+    if (vpcheck == 0) break;
+    if (vpcheck == vp) return ret;
+    ++ret;
+  } while (1);
+
+  DEBUG_ECHOLNPAIR("FindVPVar NOT FOUND ", vp);
+  return nullptr;
+}
+
+void DGUSScreenHandler::ScreenChangeHookIfIdle(DGUS_VP_Variable &var, void *val_ptr) {
+  if (!ExtUI::isPrinting()) {
+    ScreenChangeHook(var, val_ptr);
+    dgusdisplay.RequestScreen(current_screen);
+  }
+}
+
+void DGUSScreenHandler::HandleAllHeatersOff(DGUS_VP_Variable &var, void *val_ptr) {
+  thermalManager.disable_all_heaters();
+  ForceCompleteUpdate(); // hint to send all data.
+}
+
+void DGUSScreenHandler::HandleTemperatureChanged(DGUS_VP_Variable &var, void *val_ptr) {
+  celsius_t newvalue = swap16(*(uint16_t*)val_ptr);
+  celsius_t acceptedvalue;
+
+  switch (var.VP) {
+    default: return;
+    #if HOTENDS >= 1
+      case VP_T_E0_Set:
+        NOMORE(newvalue, HEATER_0_MAXTEMP);
+        thermalManager.setTargetHotend(newvalue, 0);
+        acceptedvalue = thermalManager.degTargetHotend(0);
+        break;
+    #endif
+    #if HOTENDS >= 2
+      case VP_T_E1_Set:
+        NOMORE(newvalue, HEATER_1_MAXTEMP);
+        thermalManager.setTargetHotend(newvalue, 1);
+        acceptedvalue = thermalManager.degTargetHotend(1);
+        break;
+    #endif
+    #if HAS_HEATED_BED
+      case VP_T_Bed_Set:
+        NOMORE(newvalue, BED_MAXTEMP);
+        thermalManager.setTargetBed(newvalue);
+        acceptedvalue = thermalManager.degTargetBed();
+        break;
+    #endif
+  }
+
+  // reply to display the new value to update the view if the new value was rejected by the Thermal Manager.
+  if (newvalue != acceptedvalue && var.send_to_display_handler) var.send_to_display_handler(var);
+  skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+}
+
+void DGUSScreenHandler::HandleFlowRateChanged(DGUS_VP_Variable &var, void *val_ptr) {
+  #if EXTRUDERS
+    uint16_t newvalue = swap16(*(uint16_t*)val_ptr);
+    uint8_t target_extruder;
+    switch (var.VP) {
+      default: return;
+      #if HOTENDS >= 1
+        case VP_Flowrate_E0: target_extruder = 0; break;
+      #endif
+      #if HOTENDS >= 2
+        case VP_Flowrate_E1: target_extruder = 1; break;
+      #endif
+    }
+
+    planner.set_flow(target_extruder, newvalue);
+    skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+  #else
+    UNUSED(var); UNUSED(val_ptr);
+  #endif
+}
+
+void DGUSScreenHandler::HandleManualExtrude(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleManualExtrude");
+
+  int16_t movevalue = swap16(*(uint16_t*)val_ptr);
+  float target = movevalue * 0.01f;
+  ExtUI::extruder_t target_extruder;
+
+  switch (var.VP) {
+    #if HOTENDS >= 1
+      case VP_MOVE_E0: target_extruder = ExtUI::extruder_t::E0; break;
+    #endif
+    #if HOTENDS >= 2
+      case VP_MOVE_E1: target_extruder = ExtUI::extruder_t::E1; break;
+    #endif
+    default: return;
+  }
+
+  target += ExtUI::getAxisPosition_mm(target_extruder);
+  ExtUI::setAxisPosition_mm(target, target_extruder);
+  skipVP = var.VP;
+}
+
+#if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+  void DGUSScreenHandler::HandleManualMoveOption(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleManualMoveOption");
+    *(uint16_t*)var.memadr = swap16(*(uint16_t*)val_ptr);
+  }
+#endif
+
+void DGUSScreenHandler::HandleMotorLockUnlock(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleMotorLockUnlock");
+
+  char buf[4];
+  const int16_t lock = swap16(*(uint16_t*)val_ptr);
+  strcpy_P(buf, lock ? PSTR("M18") : PSTR("M17"));
+
+  //DEBUG_ECHOPAIR(" ", buf);
+  queue.enqueue_one_now(buf);
+}
+
+void DGUSScreenHandler::HandleSettings(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleSettings");
+  uint16_t value = swap16(*(uint16_t*)val_ptr);
+  switch (value) {
+    default: break;
+    case 1:
+      TERN_(PRINTCOUNTER, print_job_timer.initStats());
+      settings.reset();
+      settings.save();
+      break;
+    case 2: settings.load(); break;
+    case 3: settings.save(); break;
+  }
+}
+
+void DGUSScreenHandler::HandleStepPerMMChanged(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleStepPerMMChanged");
+
+  uint16_t value_raw = swap16(*(uint16_t*)val_ptr);
+  DEBUG_ECHOLNPAIR("value_raw:", value_raw);
+  float value = (float)value_raw / 10;
+  ExtUI::axis_t axis;
+  switch (var.VP) {
+    case VP_X_STEP_PER_MM: axis = ExtUI::axis_t::X; break;
+    case VP_Y_STEP_PER_MM: axis = ExtUI::axis_t::Y; break;
+    case VP_Z_STEP_PER_MM: axis = ExtUI::axis_t::Z; break;
+    default: return;
+  }
+  DEBUG_ECHOLNPAIR_F("value:", value);
+  ExtUI::setAxisSteps_per_mm(value, axis);
+  DEBUG_ECHOLNPAIR_F("value_set:", ExtUI::getAxisSteps_per_mm(axis));
+  skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+  return;
+}
+
+void DGUSScreenHandler::HandleStepPerMMExtruderChanged(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleStepPerMMExtruderChanged");
+
+  uint16_t value_raw = swap16(*(uint16_t*)val_ptr);
+  DEBUG_ECHOLNPAIR("value_raw:", value_raw);
+  float value = (float)value_raw / 10;
+  ExtUI::extruder_t extruder;
+  switch (var.VP) {
+    default: return;
+      #if HOTENDS >= 1
+        case VP_E0_STEP_PER_MM: extruder = ExtUI::extruder_t::E0; break;
+      #endif
+      #if HOTENDS >= 2
+        case VP_E1_STEP_PER_MM: extruder = ExtUI::extruder_t::E1; break;
+      #endif
+  }
+  DEBUG_ECHOLNPAIR_F("value:", value);
+  ExtUI::setAxisSteps_per_mm(value, extruder);
+  DEBUG_ECHOLNPAIR_F("value_set:", ExtUI::getAxisSteps_per_mm(extruder));
+  skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+}
+
+#if HAS_PID_HEATING
+  void DGUSScreenHandler::HandlePIDAutotune(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandlePIDAutotune");
+
+    char buf[32] = {0};
+
+    switch (var.VP) {
+      default: break;
+        #if ENABLED(PIDTEMP)
+          #if HOTENDS >= 1
+            case VP_PID_AUTOTUNE_E0: // Autotune Extruder 0
+              sprintf_P(buf, PSTR("M303 E%d C5 S210 U1"), ExtUI::extruder_t::E0);
+              break;
+          #endif
+          #if HOTENDS >= 2
+            case VP_PID_AUTOTUNE_E1:
+              sprintf_P(buf, PSTR("M303 E%d C5 S210 U1"), ExtUI::extruder_t::E1);
+              break;
+          #endif
+        #endif
+        #if ENABLED(PIDTEMPBED)
+          case VP_PID_AUTOTUNE_BED:
+            sprintf_P(buf, PSTR("M303 E-1 C5 S70 U1"));
+            break;
+        #endif
+    }
+
+    if (buf[0]) queue.enqueue_one_now(buf);
+
+    #if ENABLED(DGUS_UI_WAITING)
+      sendinfoscreen(PSTR("PID is autotuning"), PSTR("please wait"), NUL_STR, NUL_STR, true, true, true, true);
+      GotoScreen(DGUSLCD_SCREEN_WAITING);
+    #endif
+  }
+#endif // HAS_PID_HEATING
+
+#if HAS_BED_PROBE
+  void DGUSScreenHandler::HandleProbeOffsetZChanged(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleProbeOffsetZChanged");
+
+    const float offset = float(int16_t(swap16(*(uint16_t*)val_ptr))) / 100.0f;
+    ExtUI::setZOffset_mm(offset);
+    skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+    return;
+  }
+#endif
+
+#if HAS_FAN
+  void DGUSScreenHandler::HandleFanControl(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleFanControl");
+    *(uint8_t*)var.memadr = *(uint8_t*)var.memadr > 0 ? 0 : 255;
+  }
+#endif
+
+void DGUSScreenHandler::HandleHeaterControl(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleHeaterControl");
+
+  uint8_t preheat_temp = 0;
+  switch (var.VP) {
+    #if HOTENDS >= 1
+      case VP_E0_CONTROL:
+    #endif
+    #if HOTENDS >= 2
+      case VP_E1_CONTROL:
+    #endif
+    #if HOTENDS >= 3
+      case VP_E2_CONTROL:
+    #endif
+    preheat_temp = PREHEAT_1_TEMP_HOTEND;
+    break;
+
+    case VP_BED_CONTROL:
+      preheat_temp = PREHEAT_1_TEMP_BED;
+      break;
+  }
+
+  *(int16_t*)var.memadr = *(int16_t*)var.memadr > 0 ? 0 : preheat_temp;
+}
+
+#if ENABLED(DGUS_PREHEAT_UI)
+
+  void DGUSScreenHandler::HandlePreheat(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandlePreheat");
+
+    uint8_t e_temp = 0;
+    #if ENABLED(HAS_HEATED_BED)
+      uint8_t bed_temp = 0;
+    #endif
+    const uint16_t preheat_option = swap16(*(uint16_t*)val_ptr);
+    switch (preheat_option) {
+      default:
+      case 0: // Preheat PLA
+        #if defined(PREHEAT_1_TEMP_HOTEND) && defined(PREHEAT_1_TEMP_BED)
+          e_temp = PREHEAT_1_TEMP_HOTEND;
+          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_1_TEMP_BED);
+        #endif
+        break;
+      case 1: // Preheat ABS
+        #if defined(PREHEAT_2_TEMP_HOTEND) && defined(PREHEAT_2_TEMP_BED)
+          e_temp = PREHEAT_2_TEMP_HOTEND;
+          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_2_TEMP_BED);
+        #endif
+        break;
+      case 2: // Preheat PET
+        #if defined(PREHEAT_3_TEMP_HOTEND) && defined(PREHEAT_3_TEMP_BED)
+          e_temp = PREHEAT_3_TEMP_HOTEND;
+          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_3_TEMP_BED);
+        #endif
+        break;
+      case 3: // Preheat FLEX
+        #if defined(PREHEAT_4_TEMP_HOTEND) && defined(PREHEAT_4_TEMP_BED)
+          e_temp = PREHEAT_4_TEMP_HOTEND;
+          TERN_(HAS_HEATED_BED, bed_temp = PREHEAT_4_TEMP_BED);
+        #endif
+        break;
+      case 7: break; // Custom preheat
+      case 9: break; // Cool down
+    }
+
+    switch (var.VP) {
+      default: return;
+        #if HOTENDS >= 1
+          case VP_E0_BED_PREHEAT:
+            thermalManager.setTargetHotend(e_temp, 0);
+            TERN_(HAS_HEATED_BED, thermalManager.setTargetBed(bed_temp));
+            break;
+        #endif
+        #if HOTENDS >= 2
+          case VP_E1_BED_PREHEAT:
+            thermalManager.setTargetHotend(e_temp, 1);
+            TERN_(HAS_HEATED_BED, thermalManager.setTargetBed(bed_temp));
+            break;
+        #endif
+    }
+
+    // Go to the preheat screen to show the heating progress
+    GotoScreen(DGUSLCD_SCREEN_PREHEAT);
+  }
+
+#endif // DGUS_PREHEAT_UI
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+
+  void DGUSScreenHandler::HandlePowerLossRecovery(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t value = swap16(*(uint16_t*)val_ptr);
+    if (value) {
+      queue.inject_P(PSTR("M1000"));
+      dgusdisplay.WriteVariable(VP_SD_Print_Filename, filelist.filename(), 32, true);
+      GotoScreen(PLR_SCREEN_RECOVER);
+    }
+    else {
+      recovery.cancel();
+      GotoScreen(PLR_SCREEN_CANCEL);
+    }
+  }
+
+#endif
+
+void DGUSScreenHandler::UpdateNewScreen(DGUSLCD_Screens newscreen, bool popup) {
+  DEBUG_ECHOLNPAIR("SetNewScreen: ", newscreen);
+  if (!popup) {
+    memmove(&past_screens[1], &past_screens[0], sizeof(past_screens) - 1);
+    past_screens[0] = current_screen;
+  }
+  current_screen = newscreen;
+  skipVP = 0;
+  ForceCompleteUpdate();
+}
+
+void DGUSScreenHandler::PopToOldScreen() {
+  DEBUG_ECHOLNPAIR("PopToOldScreen s=", past_screens[0]);
+  GotoScreen(past_screens[0], true);
+  memmove(&past_screens[0], &past_screens[1], sizeof(past_screens) - 1);
+  past_screens[sizeof(past_screens) - 1] = DGUSLCD_SCREEN_MAIN;
+}
+
+void DGUSScreenHandler::UpdateScreenVPData() {
+  DEBUG_ECHOPAIR(" UpdateScreenVPData Screen: ", current_screen);
+
+  const uint16_t *VPList = DGUSLCD_FindScreenVPMapList(current_screen);
+  if (!VPList) {
+    DEBUG_ECHOLNPAIR(" NO SCREEN FOR: ", current_screen);
+    ScreenComplete = true;
+    return; // nothing to do, likely a bug or boring screen.
+  }
+
+  // Round-robin updating of all VPs.
+  VPList += update_ptr;
+
+  bool sent_one = false;
+  do {
+    uint16_t VP = pgm_read_word(VPList);
+    DEBUG_ECHOPAIR(" VP: ", VP);
+    if (!VP) {
+      update_ptr = 0;
+      DEBUG_ECHOLNPGM(" UpdateScreenVPData done");
+      ScreenComplete = true;
+      return; // Screen completed.
+    }
+
+    if (VP == skipVP) { skipVP = 0; continue; }
+
+    DGUS_VP_Variable rcpy;
+    if (populate_VPVar(VP, &rcpy)) {
+      uint8_t expected_tx = 6 + rcpy.size; // expected overhead is 6 bytes + payload.
+      // Send the VP to the display, but try to avoid overrunning the Tx Buffer.
+      // But send at least one VP, to avoid getting stalled.
+      if (rcpy.send_to_display_handler && (!sent_one || expected_tx <= dgusdisplay.GetFreeTxBuffer())) {
+        //DEBUG_ECHOPAIR(" calling handler for ", rcpy.VP);
+        sent_one = true;
+        rcpy.send_to_display_handler(rcpy);
+      }
+      else {
+        // auto x=dgusdisplay.GetFreeTxBuffer();
+        //DEBUG_ECHOLNPAIR(" tx almost full: ", x);
+        //DEBUG_ECHOPAIR(" update_ptr ", update_ptr);
+        ScreenComplete = false;
+        return; // please call again!
+      }
+    }
+
+  } while (++update_ptr, ++VPList, true);
+}
+
+void DGUSScreenHandler::GotoScreen(DGUSLCD_Screens screen, bool ispopup) {
+  dgusdisplay.RequestScreen(screen);
+  UpdateNewScreen(screen, ispopup);
+}
+
+void DGUSDisplay::RequestScreen(DGUSLCD_Screens screen) {
+  DEBUG_ECHOLNPAIR("GotoScreen ", screen);
+  const unsigned char gotoscreen[] = { 0x5A, 0x01, (unsigned char) (screen >> 8U), (unsigned char) (screen & 0xFFU) };
+  WriteVariable(0x84, gotoscreen, sizeof(gotoscreen));
+}
+
+#endif // HAS_DGUS_LCD

Marlin/src/lcd/extui/dgus/DGUSScreenHandler.h

@@ -0,0 +1,58 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * lcd/extui/dgus/DGUSScreenHandler.h
+ */
+
+#include "../../../inc/MarlinConfigPre.h"
+
+#include "../ui_api.h"
+
+#if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+
+  typedef struct  {
+    ExtUI::extruder_t extruder; // which extruder to operate
+    uint8_t action; // load or unload
+    bool heated; // heating done ?
+    float purge_length; // the length to extrude before unload, prevent filament jam
+  } filament_data_t;
+
+  extern filament_data_t filament_data;
+
+#endif
+
+// endianness swap
+inline uint16_t swap16(const uint16_t value) { return (value & 0xFFU) << 8U | (value >> 8U); }
+
+#if ENABLED(DGUS_LCD_UI_ORIGIN)
+  #include "origin/DGUSScreenHandler.h"
+#elif ENABLED(DGUS_LCD_UI_MKS)
+  #include "mks/DGUSScreenHandler.h"
+#elif ENABLED(DGUS_LCD_UI_FYSETC)
+  #include "fysetc/DGUSScreenHandler.h"
+#elif ENABLED(DGUS_LCD_UI_HIPRECY)
+  #include "hiprecy/DGUSScreenHandler.h"
+#endif
+
+extern DGUSScreenHandler ScreenHandler;

Marlin/src/lcd/extui/dgus/DGUSVPVariable.h

@@ -0,0 +1,49 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include <stdint.h>
+
+/**
+ * DGUSVPVariable.h
+ *
+ *  Created on: Feb 9, 2019
+ *      Author: tobi
+ */
+
+struct DGUS_VP_Variable {
+  uint16_t VP;
+  void*    memadr;  // If nullptr, the value cannot be uploaded to the display.
+  uint8_t  size;
+
+  // Callback that will be called if the display modified the value.
+  // nullptr makes it readonly for the display.
+  void (*set_by_display_handler)(DGUS_VP_Variable &var, void *val_ptr);
+  void (*send_to_display_handler)(DGUS_VP_Variable &var);
+
+  template<typename T>
+  DGUS_VP_Variable& operator =(T &o) {
+    *(T*)memadr = o;  // warning this is not typesafe.
+    // TODO: Call out the display or mark as dirty for the next update.
+    return *this;
+  }
+};

Marlin/src/lcd/extui/dgus/dgus_extui.cpp

@@ -0,0 +1,159 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * lcd/extui/dgus/dgus_extui.cpp
+ */
+
+#include "../../../inc/MarlinConfigPre.h"
+
+#if HAS_DGUS_LCD
+
+#include "../ui_api.h"
+#include "DGUSDisplay.h"
+#include "DGUSDisplayDef.h"
+#include "DGUSScreenHandler.h"
+
+namespace ExtUI {
+
+  void onStartup() {
+    dgusdisplay.InitDisplay();
+    ScreenHandler.UpdateScreenVPData();
+  }
+
+  void onIdle() { ScreenHandler.loop(); }
+
+  void onPrinterKilled(PGM_P const error, PGM_P const component) {
+    ScreenHandler.sendinfoscreen(GET_TEXT(MSG_HALTED), error, NUL_STR, GET_TEXT(MSG_PLEASE_RESET), true, true, true, true);
+    ScreenHandler.GotoScreen(DGUSLCD_SCREEN_KILL);
+    while (!ScreenHandler.loop());  // Wait while anything is left to be sent
+  }
+
+  void onMediaInserted() { TERN_(SDSUPPORT, ScreenHandler.SDCardInserted()); }
+  void onMediaError()    { TERN_(SDSUPPORT, ScreenHandler.SDCardError()); }
+  void onMediaRemoved()  { TERN_(SDSUPPORT, ScreenHandler.SDCardRemoved()); }
+
+  void onPlayTone(const uint16_t frequency, const uint16_t duration) {}
+  void onPrintTimerStarted() {}
+  void onPrintTimerPaused() {}
+  void onPrintTimerStopped() {}
+  void onFilamentRunout(const extruder_t extruder) {}
+
+  void onUserConfirmRequired(const char * const msg) {
+    if (msg) {
+      ScreenHandler.sendinfoscreen(PSTR("Please confirm."), nullptr, msg, nullptr, true, true, false, true);
+      ScreenHandler.SetupConfirmAction(setUserConfirmed);
+      ScreenHandler.GotoScreen(DGUSLCD_SCREEN_POPUP);
+    }
+    else if (ScreenHandler.getCurrentScreen() == DGUSLCD_SCREEN_POPUP ) {
+      ScreenHandler.SetupConfirmAction(nullptr);
+      ScreenHandler.PopToOldScreen();
+    }
+  }
+
+  void onStatusChanged(const char * const msg) { ScreenHandler.setstatusmessage(msg); }
+
+  void onHomingStart() {}
+  void onHomingComplete() {}
+  void onPrintFinished() {}
+
+  void onFactoryReset() {}
+
+  void onStoreSettings(char *buff) {
+    // Called when saving to EEPROM (i.e. M500). If the ExtUI needs
+    // permanent data to be stored, it can write up to eeprom_data_size bytes
+    // into buff.
+
+    // Example:
+    //  static_assert(sizeof(myDataStruct) <= eeprom_data_size);
+    //  memcpy(buff, &myDataStruct, sizeof(myDataStruct));
+  }
+
+  void onLoadSettings(const char *buff) {
+    // Called while loading settings from EEPROM. If the ExtUI
+    // needs to retrieve data, it should copy up to eeprom_data_size bytes
+    // from buff
+
+    // Example:
+    //  static_assert(sizeof(myDataStruct) <= eeprom_data_size);
+    //  memcpy(&myDataStruct, buff, sizeof(myDataStruct));
+  }
+
+  void onPostprocessSettings() {
+    // Called after loading or resetting stored settings
+  }
+
+  void onConfigurationStoreWritten(bool success) {
+    // Called after the entire EEPROM has been written,
+    // whether successful or not.
+  }
+
+  void onConfigurationStoreRead(bool success) {
+    // Called after the entire EEPROM has been read,
+    // whether successful or not.
+  }
+
+  #if HAS_MESH
+    void onMeshLevelingStart() {}
+
+    void onMeshUpdate(const int8_t xpos, const int8_t ypos, const_float_t zval) {
+      // Called when any mesh points are updated
+    }
+
+    void onMeshUpdate(const int8_t xpos, const int8_t ypos, const probe_state_t state) {
+      // Called to indicate a special condition
+    }
+  #endif
+
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    void onPowerLossResume() {
+      // Called on resume from power-loss
+      IF_DISABLED(DGUS_LCD_UI_MKS, ScreenHandler.GotoScreen(DGUSLCD_SCREEN_POWER_LOSS));
+    }
+  #endif
+
+  #if HAS_PID_HEATING
+    void onPidTuning(const result_t rst) {
+      // Called for temperature PID tuning result
+      switch (rst) {
+        case PID_BAD_EXTRUDER_NUM:
+          ScreenHandler.setstatusmessagePGM(GET_TEXT(MSG_PID_BAD_EXTRUDER_NUM));
+          break;
+        case PID_TEMP_TOO_HIGH:
+          ScreenHandler.setstatusmessagePGM(GET_TEXT(MSG_PID_TEMP_TOO_HIGH));
+          break;
+        case PID_TUNING_TIMEOUT:
+          ScreenHandler.setstatusmessagePGM(GET_TEXT(MSG_PID_TIMEOUT));
+          break;
+        case PID_DONE:
+          ScreenHandler.setstatusmessagePGM(GET_TEXT(MSG_PID_AUTOTUNE_DONE));
+          break;
+      }
+      ScreenHandler.GotoScreen(DGUSLCD_SCREEN_MAIN);
+    }
+  #endif
+
+  void onSteppersDisabled() {}
+  void onSteppersEnabled()  {}
+}
+
+#endif // HAS_DGUS_LCD

Marlin/src/lcd/extui/dgus/fysetc/DGUSDisplayDef.cpp

@@ -0,0 +1,486 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/* DGUS VPs changed by George Fu in 2019 for Marlin */
+
+#include "../../../../inc/MarlinConfigPre.h"
+
+#if ENABLED(DGUS_LCD_UI_FYSETC)
+
+#include "DGUSDisplayDef.h"
+#include "../DGUSDisplay.h"
+#include "../DGUSScreenHandler.h"
+
+#include "../../../../module/temperature.h"
+#include "../../../../module/motion.h"
+#include "../../../../module/planner.h"
+
+#include "../../ui_api.h"
+#include "../../../marlinui.h"
+
+#if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+  uint16_t distanceToMove = 10;
+#endif
+
+const uint16_t VPList_Boot[] PROGMEM = {
+  VP_MARLIN_VERSION,
+  0x0000
+};
+
+const uint16_t VPList_Main[] PROGMEM = {
+  /* VP_M117, for completeness, but it cannot be auto-uploaded. */
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set, VP_E0_STATUS,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set, VP_BED_STATUS,
+  #endif
+  #if HAS_FAN
+    VP_Fan0_Percentage, VP_FAN0_STATUS,
+  #endif
+  VP_XPos, VP_YPos, VP_ZPos,
+  VP_Fan0_Percentage,
+  VP_Feedrate_Percentage,
+  #if ENABLED(LCD_SET_PROGRESS_MANUALLY)
+    VP_PrintProgress_Percentage,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Temp[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Status[] PROGMEM = {
+  /* VP_M117, for completeness, but it cannot be auto-uploaded */
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  #if HAS_FAN
+    VP_Fan0_Percentage,
+  #endif
+  VP_XPos, VP_YPos, VP_ZPos,
+  VP_Fan0_Percentage,
+  VP_Feedrate_Percentage,
+  VP_PrintProgress_Percentage,
+  0x0000
+};
+
+const uint16_t VPList_Status2[] PROGMEM = {
+  /* VP_M117, for completeness, but it cannot be auto-uploaded */
+  #if HOTENDS >= 1
+    VP_Flowrate_E0,
+  #endif
+  #if HOTENDS >= 2
+    VP_Flowrate_E1,
+  #endif
+  VP_PrintProgress_Percentage,
+  VP_PrintTime,
+  0x0000
+};
+
+const uint16_t VPList_Preheat[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_ManualMove[] PROGMEM = {
+  VP_XPos, VP_YPos, VP_ZPos,
+  0x0000
+};
+
+const uint16_t VPList_ManualExtrude[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  VP_EPos,
+  0x0000
+};
+
+const uint16_t VPList_FanAndFeedrate[] PROGMEM = {
+  VP_Feedrate_Percentage, VP_Fan0_Percentage,
+  0x0000
+};
+
+const uint16_t VPList_SD_FlowRates[] PROGMEM = {
+  VP_Flowrate_E0, VP_Flowrate_E1,
+  0x0000
+};
+
+const uint16_t VPList_Filament_heating[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+    VP_E0_FILAMENT_LOAD_UNLOAD,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+    VP_E1_FILAMENT_LOAD_UNLOAD,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Filament_load_unload[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_E0_FILAMENT_LOAD_UNLOAD,
+  #endif
+  #if HOTENDS >= 2
+    VP_E1_FILAMENT_LOAD_UNLOAD,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_SDFileList[] PROGMEM = {
+  VP_SD_FileName0, VP_SD_FileName1, VP_SD_FileName2, VP_SD_FileName3, VP_SD_FileName4,
+  0x0000
+};
+
+const uint16_t VPList_SD_PrintManipulation[] PROGMEM = {
+  VP_PrintProgress_Percentage, VP_PrintTime,
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  #if HAS_FAN
+    VP_Fan0_Percentage,
+    #if FAN_COUNT > 1
+      VP_Fan1_Percentage,
+    #endif
+  #endif
+  VP_Flowrate_E0,
+  0x0000
+};
+
+const uint16_t VPList_SDPrintTune[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set, VP_Flowrate_E0,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set, VP_Flowrate_E1,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  VP_Feedrate_Percentage,
+  VP_SD_Print_ProbeOffsetZ,
+  0x0000
+};
+
+const uint16_t VPList_StepPerMM[] PROGMEM = {
+  VP_X_STEP_PER_MM,
+  VP_Y_STEP_PER_MM,
+  VP_Z_STEP_PER_MM,
+  #if HOTENDS >= 1
+    VP_E0_STEP_PER_MM,
+  #endif
+  #if HOTENDS >= 2
+    VP_E1_STEP_PER_MM,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_PIDE0[] PROGMEM = {
+  #if ENABLED(PIDTEMP)
+    VP_E0_PID_P,
+    VP_E0_PID_I,
+    VP_E0_PID_D,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_PIDBED[] PROGMEM = {
+  #if ENABLED(PIDTEMP)
+    VP_BED_PID_P,
+    VP_BED_PID_I,
+    VP_BED_PID_D,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Infos[] PROGMEM = {
+  VP_MARLIN_VERSION,
+  VP_PrintTime,
+  #if ENABLED(PRINTCOUNTER)
+    VP_PrintAccTime,
+    VP_PrintsTotal,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_PIDTuningWaiting[] PROGMEM = {
+  VP_WAITING_STATUS,
+  0x0000
+};
+
+const uint16_t VPList_FLCPreheat[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_FLCPrinting[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_SD_Print_ProbeOffsetZ,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Z_Offset[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_SD_Print_ProbeOffsetZ,
+  #endif
+  0x0000
+};
+
+const struct VPMapping VPMap[] PROGMEM = {
+  { DGUSLCD_SCREEN_BOOT, VPList_Boot },
+  { DGUSLCD_SCREEN_MAIN, VPList_Main },
+  { DGUSLCD_SCREEN_TEMPERATURE, VPList_Temp },
+  { DGUSLCD_SCREEN_STATUS, VPList_Status },
+  { DGUSLCD_SCREEN_STATUS2, VPList_Status2 },
+  { DGUSLCD_SCREEN_PREHEAT, VPList_Preheat },
+  { DGUSLCD_SCREEN_MANUALMOVE, VPList_ManualMove },
+  { DGUSLCD_SCREEN_MANUALEXTRUDE, VPList_ManualExtrude },
+  { DGUSLCD_SCREEN_FILAMENT_HEATING, VPList_Filament_heating },
+  { DGUSLCD_SCREEN_FILAMENT_LOADING, VPList_Filament_load_unload },
+  { DGUSLCD_SCREEN_FILAMENT_UNLOADING, VPList_Filament_load_unload },
+  { DGUSLCD_SCREEN_SDPRINTMANIPULATION, VPList_SD_PrintManipulation },
+  { DGUSLCD_SCREEN_SDFILELIST, VPList_SDFileList },
+  { DGUSLCD_SCREEN_SDPRINTTUNE, VPList_SDPrintTune },
+  { DGUSLCD_SCREEN_WAITING, VPList_PIDTuningWaiting },
+  { DGUSLCD_SCREEN_FLC_PREHEAT, VPList_FLCPreheat },
+  { DGUSLCD_SCREEN_FLC_PRINTING, VPList_FLCPrinting },
+  { DGUSLCD_SCREEN_Z_OFFSET, VPList_Z_Offset },
+  { DGUSLCD_SCREEN_STEPPERMM, VPList_StepPerMM },
+  { DGUSLCD_SCREEN_PID_E, VPList_PIDE0 },
+  { DGUSLCD_SCREEN_PID_BED, VPList_PIDBED },
+  { DGUSLCD_SCREEN_INFOS, VPList_Infos },
+  { 0 , nullptr } // List is terminated with an nullptr as table entry.
+};
+
+const char MarlinVersion[] PROGMEM = SHORT_BUILD_VERSION;
+
+// Helper to define a DGUS_VP_Variable for common use cases.
+#define VPHELPER(VPADR, VPADRVAR, RXFPTR, TXFPTR ) { .VP=VPADR, .memadr=VPADRVAR, .size=sizeof(VPADRVAR), \
+  .set_by_display_handler = RXFPTR, .send_to_display_handler = TXFPTR }
+
+// Helper to define a DGUS_VP_Variable when the sizeo of the var cannot be determined automaticalyl (eg. a string)
+#define VPHELPER_STR(VPADR, VPADRVAR, STRLEN, RXFPTR, TXFPTR ) { .VP=VPADR, .memadr=VPADRVAR, .size=STRLEN, \
+  .set_by_display_handler = RXFPTR, .send_to_display_handler = TXFPTR }
+
+const struct DGUS_VP_Variable ListOfVP[] PROGMEM = {
+  // Helper to detect touch events
+  VPHELPER(VP_SCREENCHANGE, nullptr, ScreenHandler.ScreenChangeHook, nullptr),
+  VPHELPER(VP_SCREENCHANGE_ASK, nullptr, ScreenHandler.ScreenChangeHookIfIdle, nullptr),
+  #if ENABLED(SDSUPPORT)
+    VPHELPER(VP_SCREENCHANGE_WHENSD, nullptr, ScreenHandler.ScreenChangeHookIfSD, nullptr),
+  #endif
+  VPHELPER(VP_CONFIRMED, nullptr, ScreenHandler.ScreenConfirmedOK, nullptr),
+
+  VPHELPER(VP_TEMP_ALL_OFF, nullptr, &ScreenHandler.HandleAllHeatersOff, nullptr),
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    VPHELPER(VP_MOVE_OPTION, &distanceToMove, &ScreenHandler.HandleManualMoveOption, nullptr),
+  #endif
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    VPHELPER(VP_MOVE_X, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+  #else
+    VPHELPER(VP_MOVE_X, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+  #endif
+  VPHELPER(VP_MOTOR_LOCK_UNLOK, nullptr, &ScreenHandler.HandleMotorLockUnlock, nullptr),
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    VPHELPER(VP_POWER_LOSS_RECOVERY, nullptr, &ScreenHandler.HandlePowerLossRecovery, nullptr),
+  #endif
+  VPHELPER(VP_SETTINGS, nullptr, &ScreenHandler.HandleSettings, nullptr),
+  #if ENABLED(SINGLE_Z_CALIBRATION)
+    VPHELPER(VP_Z_CALIBRATE, nullptr, &ScreenHandler.HandleZCalibration, nullptr),
+  #endif
+
+  #if ENABLED(FIRST_LAYER_CAL)
+    VPHELPER(VP_Z_FIRST_LAYER_CAL, nullptr, &ScreenHandler.HandleFirstLayerCal, nullptr),
+  #endif
+
+  { .VP = VP_MARLIN_VERSION, .memadr = (void*)MarlinVersion, .size = VP_MARLIN_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  // M117 LCD String (We don't need the string in memory but "just" push it to the display on demand, hence the nullptr
+  { .VP = VP_M117, .memadr = nullptr, .size = VP_M117_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&ScreenHandler.DGUSLCD_SendStringToDisplay },
+
+  // Temperature Data
+  #if HOTENDS >= 1
+    VPHELPER(VP_T_E0_Is, &thermalManager.temp_hotend[0].celsius, nullptr, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_E0_Set, &thermalManager.temp_hotend[0].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E0, &planner.flow_percentage[ExtUI::extruder_t::E0], ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_EPos, &destination.e, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+    VPHELPER(VP_MOVE_E0, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E0_CONTROL, &thermalManager.temp_hotend[0].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E0_STATUS, &thermalManager.temp_hotend[0].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+    #if ENABLED(DGUS_PREHEAT_UI)
+      VPHELPER(VP_E0_BED_PREHEAT, nullptr, &ScreenHandler.HandlePreheat, nullptr),
+    #endif
+    #if ENABLED(PIDTEMP)
+      VPHELPER(VP_E0_PID_P, &thermalManager.temp_hotend[0].pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_I, &thermalManager.temp_hotend[0].pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_D, &thermalManager.temp_hotend[0].pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_E0, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
+    #endif
+    #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+      VPHELPER(VP_E0_FILAMENT_LOAD_UNLOAD, nullptr, &ScreenHandler.HandleFilamentOption, &ScreenHandler.HandleFilamentLoadUnload),
+    #endif
+  #endif
+  #if HOTENDS >= 2
+    VPHELPER(VP_T_E1_Is, &thermalManager.temp_hotend[1].celsius, nullptr, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_E1_Set, &thermalManager.temp_hotend[1].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E1, &planner.flow_percentage[ExtUI::extruder_t::E1], ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_MOVE_E1, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E1_CONTROL, &thermalManager.temp_hotend[1].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E1_STATUS, &thermalManager.temp_hotend[1].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+    #if ENABLED(PIDTEMP)
+      VPHELPER(VP_PID_AUTOTUNE_E1, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
+    #endif
+    VPHELPER(VP_E1_FILAMENT_LOAD_UNLOAD, nullptr, &ScreenHandler.HandleFilamentOption, &ScreenHandler.HandleFilamentLoadUnload),
+  #endif
+  #if HAS_HEATED_BED
+    VPHELPER(VP_T_Bed_Is, &thermalManager.temp_bed.celsius, nullptr, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_Bed_Set, &thermalManager.temp_bed.target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_BED_CONTROL, &thermalManager.temp_bed.target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_BED_STATUS, &thermalManager.temp_bed.target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+    #if ENABLED(PIDTEMPBED)
+      VPHELPER(VP_BED_PID_P, &thermalManager.temp_bed.pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_I, &thermalManager.temp_bed.pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_D, &thermalManager.temp_bed.pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_BED, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
+    #endif
+  #endif
+
+  // Fan Data
+  #if HAS_FAN
+    #define FAN_VPHELPER(N) \
+      VPHELPER(VP_Fan##N##_Percentage, &thermalManager.fan_speed[N], ScreenHandler.DGUSLCD_PercentageToUint8, &ScreenHandler.DGUSLCD_SendPercentageToDisplay), \
+      VPHELPER(VP_FAN##N##_CONTROL, &thermalManager.fan_speed[N], &ScreenHandler.HandleFanControl, nullptr), \
+      VPHELPER(VP_FAN##N##_STATUS, &thermalManager.fan_speed[N], nullptr, &ScreenHandler.DGUSLCD_SendFanStatusToDisplay),
+    REPEAT(FAN_COUNT, FAN_VPHELPER)
+  #endif
+
+  // Feedrate
+  VPHELPER(VP_Feedrate_Percentage, &feedrate_percentage, ScreenHandler.DGUSLCD_SetValueDirectly<int16_t>, &ScreenHandler.DGUSLCD_SendWordValueToDisplay ),
+
+  // Position Data
+  VPHELPER(VP_XPos, &current_position.x, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_YPos, &current_position.y, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_ZPos, &current_position.z, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+
+  // Print Progress
+  VPHELPER(VP_PrintProgress_Percentage, nullptr, nullptr, ScreenHandler.DGUSLCD_SendPrintProgressToDisplay ),
+
+  // Print Time
+  VPHELPER_STR(VP_PrintTime, nullptr, VP_PrintTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintTimeToDisplay),
+  #if ENABLED(PRINTCOUNTER)
+    VPHELPER_STR(VP_PrintAccTime, nullptr, VP_PrintAccTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintAccTimeToDisplay),
+    VPHELPER_STR(VP_PrintsTotal, nullptr, VP_PrintsTotal_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintsTotalToDisplay),
+  #endif
+
+  VPHELPER(VP_X_STEP_PER_MM, &planner.settings.axis_steps_per_mm[X_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Y_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Y_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Z_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Z_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  #if HOTENDS >= 1
+    VPHELPER(VP_E0_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(0)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  #endif
+  #if HOTENDS >= 2
+    VPHELPER(VP_E1_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(1)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  #endif
+
+  // SDCard File listing.
+  #if ENABLED(SDSUPPORT)
+    VPHELPER(VP_SD_ScrollEvent, nullptr, ScreenHandler.DGUSLCD_SD_ScrollFilelist, nullptr),
+    VPHELPER(VP_SD_FileSelected, nullptr, ScreenHandler.DGUSLCD_SD_FileSelected, nullptr),
+    VPHELPER(VP_SD_FileSelectConfirm, nullptr, ScreenHandler.DGUSLCD_SD_StartPrint, nullptr),
+    VPHELPER_STR(VP_SD_FileName0, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName1, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName2, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName3, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName4, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER(VP_SD_ResumePauseAbort, nullptr, ScreenHandler.DGUSLCD_SD_ResumePauseAbort, nullptr),
+    VPHELPER(VP_SD_AbortPrintConfirmed, nullptr, ScreenHandler.DGUSLCD_SD_ReallyAbort, nullptr),
+    VPHELPER(VP_SD_Print_Setting, nullptr, ScreenHandler.DGUSLCD_SD_PrintTune, nullptr),
+    #if HAS_BED_PROBE
+      VPHELPER(VP_SD_Print_ProbeOffsetZ, &probe.offset.z, ScreenHandler.HandleProbeOffsetZChanged, &ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<2>),
+      #if ENABLED(BABYSTEPPING)
+        VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, ScreenHandler.HandleLiveAdjustZ, nullptr),
+      #endif
+    #endif
+  #endif
+
+  #if ENABLED(DGUS_UI_WAITING)
+    VPHELPER(VP_WAITING_STATUS, nullptr, nullptr, ScreenHandler.DGUSLCD_SendWaitingStatusToDisplay),
+  #endif
+
+  // Messages for the User, shared by the popup and the kill screen. They cant be autouploaded as we do not buffer content.
+  { .VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+
+  VPHELPER(0, 0, 0, 0)  // must be last entry.
+};
+
+#endif // DGUS_LCD_UI_FYSETC

Marlin/src/lcd/extui/dgus/fysetc/DGUSDisplayDef.h

@@ -0,0 +1,296 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../DGUSDisplayDef.h"
+
+enum DGUSLCD_Screens : uint8_t {
+  DGUSLCD_SCREEN_BOOT                =   0,
+  DGUSLCD_SCREEN_MAIN                =   1,
+  DGUSLCD_SCREEN_STATUS              =   1,
+  DGUSLCD_SCREEN_STATUS2             =   1,
+  DGUSLCD_SCREEN_TEMPERATURE         =  10,
+  DGUSLCD_SCREEN_PREHEAT             =  18,
+  DGUSLCD_SCREEN_POWER_LOSS          = 100,
+  DGUSLCD_SCREEN_MANUALMOVE          = 192,
+  DGUSLCD_SCREEN_UTILITY             = 120,
+  DGUSLCD_SCREEN_FILAMENT_HEATING    = 146,
+  DGUSLCD_SCREEN_FILAMENT_LOADING    = 148,
+  DGUSLCD_SCREEN_FILAMENT_UNLOADING  = 158,
+  DGUSLCD_SCREEN_MANUALEXTRUDE       = 160,
+  DGUSLCD_SCREEN_SDFILELIST          =  71,
+  DGUSLCD_SCREEN_SDPRINTMANIPULATION =  73,
+  DGUSLCD_SCREEN_SDPRINTTUNE         =  75,
+  DGUSLCD_SCREEN_FLC_PREHEAT         =  94,
+  DGUSLCD_SCREEN_FLC_PRINTING        =  96,
+  DGUSLCD_SCREEN_STEPPERMM           = 212,
+  DGUSLCD_SCREEN_PID_E               = 214,
+  DGUSLCD_SCREEN_PID_BED             = 218,
+  DGUSLCD_SCREEN_Z_OFFSET            = 222,
+  DGUSLCD_SCREEN_INFOS               =  36,
+  DGUSLCD_SCREEN_CONFIRM             = 240,
+  DGUSLCD_SCREEN_KILL                = 250, ///< Kill Screen. Must always be 250 (to be able to display "Error wrong LCD Version")
+  DGUSLCD_SCREEN_WAITING             = 251,
+  DGUSLCD_SCREEN_POPUP               = 252, ///< special target, popup screen will also return this code to say "return to previous screen"
+  DGUSLDC_SCREEN_UNUSED              = 255
+};
+
+// Display Memory layout used (T5UID)
+// Except system variables this is arbitrary, just to organize stuff....
+
+// 0x0000 .. 0x0FFF  -- System variables and reserved by the display
+// 0x1000 .. 0x1FFF  -- Variables to never change location, regardless of UI Version
+// 0x2000 .. 0x2FFF  -- Controls (VPs that will trigger some action)
+// 0x3000 .. 0x4FFF  -- Marlin Data to be displayed
+// 0x5000 ..         -- SPs (if we want to modify display elements, e.g change color or like) -- currently unused
+
+// As there is plenty of space (at least most displays have >8k RAM), we do not pack them too tight,
+// so that we can keep variables nicely together in the address space.
+
+// UI Version always on 0x1000...0x1002 so that the firmware can check this and bail out.
+constexpr uint16_t VP_UI_VERSION_MAJOR = 0x1000;  // Major -- incremented when incompatible
+constexpr uint16_t VP_UI_VERSION_MINOR = 0x1001;  // Minor -- incremented on new features, but compatible
+constexpr uint16_t VP_UI_VERSION_PATCH = 0x1002;  // Patch -- fixed which do not change functionality.
+constexpr uint16_t VP_UI_FLAVOUR       = 0x1010;  // lets reserve 16 bytes here to determine if UI is suitable for this Marlin. tbd.
+
+// Storage space for the Killscreen messages. 0x1100 - 0x1200 . Reused for the popup.
+constexpr uint16_t VP_MSGSTR1 = 0x1100;
+constexpr uint8_t VP_MSGSTR1_LEN = 0x20;  // might be more place for it...
+constexpr uint16_t VP_MSGSTR2 = 0x1140;
+constexpr uint8_t VP_MSGSTR2_LEN = 0x20;
+constexpr uint16_t VP_MSGSTR3 = 0x1180;
+constexpr uint8_t VP_MSGSTR3_LEN = 0x20;
+constexpr uint16_t VP_MSGSTR4 = 0x11C0;
+constexpr uint8_t VP_MSGSTR4_LEN = 0x20;
+
+// Screenchange request for screens that only make sense when printer is idle.
+// e.g movement is only allowed if printer is not printing.
+// Marlin must confirm by setting the screen manually.
+constexpr uint16_t VP_SCREENCHANGE_ASK = 0x2000;
+constexpr uint16_t VP_SCREENCHANGE = 0x2001;   // Key-Return button to new menu pressed. Data contains target screen in low byte and info in high byte.
+constexpr uint16_t VP_TEMP_ALL_OFF = 0x2002;   // Turn all heaters off. Value arbitrary ;)=
+constexpr uint16_t VP_SCREENCHANGE_WHENSD = 0x2003; // "Print" Button touched -- go only there if there is an SD Card.
+
+constexpr uint16_t VP_CONFIRMED = 0x2010; // OK on confirm screen.
+
+// Buttons on the SD-Card File listing.
+constexpr uint16_t VP_SD_ScrollEvent = 0x2020; // Data: 0 for "up a directory", numbers are the amount to scroll, e.g -1 one up, 1 one down
+constexpr uint16_t VP_SD_FileSelected = 0x2022; // Number of file field selected.
+constexpr uint16_t VP_SD_FileSelectConfirm = 0x2024; // (This is a virtual VP and emulated by the Confirm Screen when a file has been confirmed)
+
+constexpr uint16_t VP_SD_ResumePauseAbort = 0x2026; // Resume(Data=0), Pause(Data=1), Abort(Data=2) SD Card prints
+constexpr uint16_t VP_SD_AbortPrintConfirmed = 0x2028; // Abort print confirmation (virtual, will be injected by the confirm dialog)
+constexpr uint16_t VP_SD_Print_Setting = 0x2040;
+constexpr uint16_t VP_SD_Print_LiveAdjustZ = 0x2050; // Data: 0 down, 1 up
+
+// Controls for movement (we can't use the incremental / decremental feature of the display at this feature works only with 16 bit values
+// (which would limit us to 655.35mm, which is likely not a problem for common setups, but i don't want to rule out hangprinters support)
+// A word about the coding: The VP will be per axis and the return code will be an signed 16 bit value in 0.01 mm resolution, telling us
+// the relative travel amount t he user wants to do. So eg. if the display sends us VP=2100 with value 100, the user wants us to move X by +1 mm.
+constexpr uint16_t VP_MOVE_X = 0x2100;
+constexpr uint16_t VP_MOVE_Y = 0x2102;
+constexpr uint16_t VP_MOVE_Z = 0x2104;
+constexpr uint16_t VP_MOVE_E0 = 0x2110;
+constexpr uint16_t VP_MOVE_E1 = 0x2112;
+//constexpr uint16_t VP_MOVE_E2 = 0x2114;
+//constexpr uint16_t VP_MOVE_E3 = 0x2116;
+//constexpr uint16_t VP_MOVE_E4 = 0x2118;
+//constexpr uint16_t VP_MOVE_E5 = 0x211A;
+constexpr uint16_t VP_HOME_ALL = 0x2120;
+constexpr uint16_t VP_MOTOR_LOCK_UNLOK = 0x2130;
+
+// Power loss recovery
+constexpr uint16_t VP_POWER_LOSS_RECOVERY = 0x2180;
+
+// Fan Control Buttons , switch between "off" and "on"
+constexpr uint16_t VP_FAN0_CONTROL = 0x2200;
+constexpr uint16_t VP_FAN1_CONTROL = 0x2202;
+constexpr uint16_t VP_FAN2_CONTROL = 0x2204;
+constexpr uint16_t VP_FAN3_CONTROL = 0x2206;
+
+// Heater Control Buttons , triged between "cool down" and "heat PLA" state
+constexpr uint16_t VP_E0_CONTROL = 0x2210;
+constexpr uint16_t VP_E1_CONTROL = 0x2212;
+//constexpr uint16_t VP_E2_CONTROL = 0x2214;
+//constexpr uint16_t VP_E3_CONTROL = 0x2216;
+//constexpr uint16_t VP_E4_CONTROL = 0x2218;
+//constexpr uint16_t VP_E5_CONTROL = 0x221A;
+constexpr uint16_t VP_BED_CONTROL = 0x221C;
+
+// Preheat
+constexpr uint16_t VP_E0_BED_PREHEAT = 0x2220;
+constexpr uint16_t VP_E1_BED_PREHEAT = 0x2222;
+//constexpr uint16_t VP_E2_BED_PREHEAT = 0x2224;
+//constexpr uint16_t VP_E3_BED_PREHEAT = 0x2226;
+//constexpr uint16_t VP_E4_BED_PREHEAT = 0x2228;
+//constexpr uint16_t VP_E5_BED_PREHEAT = 0x222A;
+
+// Filament load and unload
+constexpr uint16_t VP_E0_FILAMENT_LOAD_UNLOAD = 0x2300;
+constexpr uint16_t VP_E1_FILAMENT_LOAD_UNLOAD = 0x2302;
+
+// Settings store , reset
+constexpr uint16_t VP_SETTINGS = 0x2400;
+
+// PID autotune
+constexpr uint16_t VP_PID_AUTOTUNE_E0 = 0x2410;
+constexpr uint16_t VP_PID_AUTOTUNE_E1 = 0x2412;
+//constexpr uint16_t VP_PID_AUTOTUNE_E2 = 0x2414;
+//constexpr uint16_t VP_PID_AUTOTUNE_E3 = 0x2416;
+//constexpr uint16_t VP_PID_AUTOTUNE_E4 = 0x2418;
+//constexpr uint16_t VP_PID_AUTOTUNE_E5 = 0x241A;
+constexpr uint16_t VP_PID_AUTOTUNE_BED = 0x2420;
+
+// Calibrate Z
+constexpr uint16_t VP_Z_CALIBRATE = 0x2430;
+
+// First layer cal
+constexpr uint16_t VP_Z_FIRST_LAYER_CAL = 0x2500; // Data: 0 - Cancel first layer cal progress, >0 filament type have loaded
+
+// Firmware version on the boot screen.
+constexpr uint16_t VP_MARLIN_VERSION = 0x3000;
+constexpr uint8_t VP_MARLIN_VERSION_LEN = 16;   // there is more space on the display, if needed.
+
+// Place for status messages.
+constexpr uint16_t VP_M117 = 0x3020;
+constexpr uint8_t VP_M117_LEN = 0x20;
+
+// Temperatures.
+constexpr uint16_t VP_T_E0_Is = 0x3060;  // 4 Byte Integer
+constexpr uint16_t VP_T_E0_Set = 0x3062; // 2 Byte Integer
+constexpr uint16_t VP_T_E1_Is = 0x3064;  // 4 Byte Integer
+
+// reserved to support up to 6 Extruders:
+constexpr uint16_t VP_T_E1_Set = 0x3066; // 2 Byte Integer
+//constexpr uint16_t VP_T_E2_Is = 0x3068;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E2_Set = 0x306A; // 2 Byte Integer
+//constexpr uint16_t VP_T_E3_Is = 0x306C;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E3_Set = 0x306E; // 2 Byte Integer
+//constexpr uint16_t VP_T_E4_Is = 0x3070;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E4_Set = 0x3072; // 2 Byte Integer
+//constexpr uint16_t VP_T_E4_Is = 0x3074;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E4_Set = 0x3076; // 2 Byte Integer
+//constexpr uint16_t VP_T_E5_Is = 0x3078;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E5_Set = 0x307A; // 2 Byte Integer
+
+constexpr uint16_t VP_T_Bed_Is = 0x3080;  // 4 Byte Integer
+constexpr uint16_t VP_T_Bed_Set = 0x3082; // 2 Byte Integer
+
+constexpr uint16_t VP_Flowrate_E0 = 0x3090; // 2 Byte Integer
+constexpr uint16_t VP_Flowrate_E1 = 0x3092; // 2 Byte Integer
+
+// reserved for up to 6 Extruders:
+//constexpr uint16_t VP_Flowrate_E2 = 0x3094;
+//constexpr uint16_t VP_Flowrate_E3 = 0x3096;
+//constexpr uint16_t VP_Flowrate_E4 = 0x3098;
+//constexpr uint16_t VP_Flowrate_E5 = 0x309A;
+
+constexpr uint16_t VP_Fan0_Percentage = 0x3100;  // 2 Byte Integer (0..100)
+constexpr uint16_t VP_Fan1_Percentage = 0x3102;  // 2 Byte Integer (0..100)
+constexpr uint16_t VP_Fan2_Percentage = 0x3104;  // 2 Byte Integer (0..100)
+constexpr uint16_t VP_Fan3_Percentage = 0x3106;  // 2 Byte Integer (0..100)
+constexpr uint16_t VP_Feedrate_Percentage = 0x3108; // 2 Byte Integer (0..100)
+
+// Actual Position
+constexpr uint16_t VP_XPos = 0x3110;  // 4 Byte Fixed point number; format xxx.yy
+constexpr uint16_t VP_YPos = 0x3112;  // 4 Byte Fixed point number; format xxx.yy
+constexpr uint16_t VP_ZPos = 0x3114;  // 4 Byte Fixed point number; format xxx.yy
+
+constexpr uint16_t VP_EPos = 0x3120;  // 4 Byte Fixed point number; format xxx.yy
+
+constexpr uint16_t VP_PrintProgress_Percentage = 0x3130; // 2 Byte Integer (0..100)
+
+constexpr uint16_t VP_PrintTime = 0x3140;
+constexpr uint16_t VP_PrintTime_LEN = 32;
+
+constexpr uint16_t VP_PrintAccTime = 0x3160;
+constexpr uint16_t VP_PrintAccTime_LEN = 32;
+
+constexpr uint16_t VP_PrintsTotal = 0x3180;
+constexpr uint16_t VP_PrintsTotal_LEN = 16;
+
+// SDCard File Listing
+constexpr uint16_t VP_SD_FileName_LEN = 32; // LEN is shared for all entries.
+constexpr uint16_t DGUS_SD_FILESPERSCREEN = 5; // FIXME move that info to the display and read it from there.
+constexpr uint16_t VP_SD_FileName0 = 0x3200;
+constexpr uint16_t VP_SD_FileName1 = 0x3220;
+constexpr uint16_t VP_SD_FileName2 = 0x3240;
+constexpr uint16_t VP_SD_FileName3 = 0x3260;
+constexpr uint16_t VP_SD_FileName4 = 0x3280;
+
+constexpr uint16_t VP_SD_Print_ProbeOffsetZ = 0x32A0; //
+constexpr uint16_t VP_SD_Print_Filename = 0x32C0;
+
+// Fan status
+constexpr uint16_t VP_FAN0_STATUS = 0x3300;
+constexpr uint16_t VP_FAN1_STATUS = 0x3302;
+constexpr uint16_t VP_FAN2_STATUS = 0x3304;
+constexpr uint16_t VP_FAN3_STATUS = 0x3306;
+
+// Heater status
+constexpr uint16_t VP_E0_STATUS = 0x3310;
+constexpr uint16_t VP_E1_STATUS = 0x3312;
+//constexpr uint16_t VP_E2_STATUS = 0x3314;
+//constexpr uint16_t VP_E3_STATUS = 0x3316;
+//constexpr uint16_t VP_E4_STATUS = 0x3318;
+//constexpr uint16_t VP_E5_STATUS = 0x331A;
+constexpr uint16_t VP_BED_STATUS = 0x331C;
+
+constexpr uint16_t VP_MOVE_OPTION = 0x3400;
+
+// Step per mm
+constexpr uint16_t VP_X_STEP_PER_MM = 0x3600; // at the moment , 2 byte unsigned int , 0~1638.4
+//constexpr uint16_t VP_X2_STEP_PER_MM = 0x3602;
+constexpr uint16_t VP_Y_STEP_PER_MM = 0x3604;
+//constexpr uint16_t VP_Y2_STEP_PER_MM = 0x3606;
+constexpr uint16_t VP_Z_STEP_PER_MM = 0x3608;
+//constexpr uint16_t VP_Z2_STEP_PER_MM = 0x360A;
+constexpr uint16_t VP_E0_STEP_PER_MM = 0x3610;
+constexpr uint16_t VP_E1_STEP_PER_MM = 0x3612;
+//constexpr uint16_t VP_E2_STEP_PER_MM = 0x3614;
+//constexpr uint16_t VP_E3_STEP_PER_MM = 0x3616;
+//constexpr uint16_t VP_E4_STEP_PER_MM = 0x3618;
+//constexpr uint16_t VP_E5_STEP_PER_MM = 0x361A;
+
+// PIDs
+constexpr uint16_t VP_E0_PID_P = 0x3700; // at the moment , 2 byte unsigned int , 0~1638.4
+constexpr uint16_t VP_E0_PID_I = 0x3702;
+constexpr uint16_t VP_E0_PID_D = 0x3704;
+constexpr uint16_t VP_E1_PID_P = 0x3706; // at the moment , 2 byte unsigned int , 0~1638.4
+constexpr uint16_t VP_E1_PID_I = 0x3708;
+constexpr uint16_t VP_E1_PID_D = 0x370A;
+constexpr uint16_t VP_BED_PID_P = 0x3710;
+constexpr uint16_t VP_BED_PID_I = 0x3712;
+constexpr uint16_t VP_BED_PID_D = 0x3714;
+
+// Wating screen status
+constexpr uint16_t VP_WAITING_STATUS = 0x3800;
+
+// SPs for certain variables...
+// located at 0x5000 and up
+// Not used yet!
+// This can be used e.g to make controls / data display invisible
+constexpr uint16_t SP_T_E0_Is = 0x5000;
+constexpr uint16_t SP_T_E0_Set = 0x5010;
+constexpr uint16_t SP_T_E1_Is = 0x5020;
+constexpr uint16_t SP_T_Bed_Is = 0x5030;
+constexpr uint16_t SP_T_Bed_Set = 0x5040;

Marlin/src/lcd/extui/dgus/fysetc/DGUSScreenHandler.cpp

@@ -0,0 +1,418 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../../../inc/MarlinConfigPre.h"
+
+#if ENABLED(DGUS_LCD_UI_FYSETC)
+
+#include "../DGUSScreenHandler.h"
+
+#include "../../../../MarlinCore.h"
+#include "../../../../gcode/queue.h"
+#include "../../../../libs/duration_t.h"
+#include "../../../../module/settings.h"
+#include "../../../../module/temperature.h"
+#include "../../../../module/motion.h"
+#include "../../../../module/planner.h"
+#include "../../../../module/printcounter.h"
+#include "../../../../sd/cardreader.h"
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+  #include "../../../../feature/powerloss.h"
+#endif
+
+#if ENABLED(SDSUPPORT)
+
+  void DGUSScreenHandler::DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t touched_nr = (int16_t)swap16(*(uint16_t*)val_ptr) + top_file;
+    if (touched_nr > filelist.count()) return;
+    if (!filelist.seek(touched_nr)) return;
+
+    if (filelist.isDir()) {
+      filelist.changeDir(filelist.filename());
+      top_file = 0;
+      ForceCompleteUpdate();
+      return;
+    }
+
+    #if ENABLED(DGUS_PRINT_FILENAME)
+      // Send print filename
+      dgusdisplay.WriteVariable(VP_SD_Print_Filename, filelist.filename(), VP_SD_FileName_LEN, true);
+    #endif
+
+    // Setup Confirmation screen
+    file_to_print = touched_nr;
+
+    HandleUserConfirmationPopUp(VP_SD_FileSelectConfirm, nullptr, PSTR("Print file"), filelist.filename(), PSTR("from SD Card?"), true, true, false, true);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!filelist.seek(file_to_print)) return;
+    ExtUI::printFile(filelist.shortFilename());
+    GotoScreen(DGUSLCD_SCREEN_SDPRINTMANIPULATION);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr) {
+
+    if (!ExtUI::isPrintingFromMedia()) return; // avoid race condition when user stays in this menu and printer finishes.
+    switch (swap16(*(uint16_t*)val_ptr)) {
+      case 0: { // Resume
+        if (ExtUI::isPrintingFromMediaPaused()) {
+          ExtUI::resumePrint();
+        }
+      } break;
+
+      case 1: // Pause
+
+        GotoScreen(MKSLCD_SCREEN_PAUSE);
+        if (!ExtUI::isPrintingFromMediaPaused()) {
+          ExtUI::pausePrint();
+          //ExtUI::mks_pausePrint();
+        }
+        break;
+      case 2: // Abort
+        HandleUserConfirmationPopUp(VP_SD_AbortPrintConfirmed, nullptr, PSTR("Abort printing"), filelist.filename(), PSTR("?"), true, true, false, true);
+        break;
+    }
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_SendFilename(DGUS_VP_Variable& var) {
+    uint16_t target_line = (var.VP - VP_SD_FileName0) / VP_SD_FileName_LEN;
+    if (target_line > DGUS_SD_FILESPERSCREEN) return;
+    char tmpfilename[VP_SD_FileName_LEN + 1] = "";
+    var.memadr = (void*)tmpfilename;
+
+    if (filelist.seek(top_file + target_line)) {
+      snprintf_P(tmpfilename, VP_SD_FileName_LEN, PSTR("%s%c"), filelist.filename(), filelist.isDir() ? '/' : 0); // snprintf_P(tmpfilename, VP_SD_FileName_LEN, PSTR("%s"), filelist.filename());
+    }
+    DGUSLCD_SendStringToDisplay(var);
+  }
+
+  void DGUSScreenHandler::SDCardInserted() {
+    top_file = 0;
+    filelist.refresh();
+    auto cs = getCurrentScreen();
+    if (cs == DGUSLCD_SCREEN_MAIN || cs == DGUSLCD_SCREEN_STATUS)
+      GotoScreen(DGUSLCD_SCREEN_SDFILELIST);
+  }
+
+  void DGUSScreenHandler::SDCardRemoved() {
+    if (current_screen == DGUSLCD_SCREEN_SDFILELIST
+        || (current_screen == DGUSLCD_SCREEN_CONFIRM && (ConfirmVP == VP_SD_AbortPrintConfirmed || ConfirmVP == VP_SD_FileSelectConfirm))
+        || current_screen == DGUSLCD_SCREEN_SDPRINTMANIPULATION
+    ) GotoScreen(DGUSLCD_SCREEN_MAIN);
+  }
+
+#endif // SDSUPPORT
+
+void DGUSScreenHandler::ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr) {
+  uint8_t *tmp = (uint8_t*)val_ptr;
+
+  // The keycode in target is coded as <from-frame><to-frame>, so 0x0100A means
+  // from screen 1 (main) to 10 (temperature). DGUSLCD_SCREEN_POPUP is special,
+  // meaning "return to previous screen"
+  DGUSLCD_Screens target = (DGUSLCD_Screens)tmp[1];
+
+  DEBUG_ECHOLNPAIR("\n DEBUG target", target);
+
+  if (target == DGUSLCD_SCREEN_POPUP) {
+    // Special handling for popup is to return to previous menu
+    if (current_screen == DGUSLCD_SCREEN_POPUP && confirm_action_cb) confirm_action_cb();
+    PopToOldScreen();
+    return;
+  }
+
+  UpdateNewScreen(target);
+
+  #ifdef DEBUG_DGUSLCD
+    if (!DGUSLCD_FindScreenVPMapList(target)) DEBUG_ECHOLNPAIR("WARNING: No screen Mapping found for ", target);
+  #endif
+}
+
+void DGUSScreenHandler::HandleManualMove(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleManualMove");
+
+  int16_t movevalue = swap16(*(uint16_t*)val_ptr);
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    if (movevalue) {
+      const uint16_t choice = *(uint16_t*)var.memadr;
+      movevalue = movevalue < 0 ? -choice : choice;
+    }
+  #endif
+  char axiscode;
+  unsigned int speed = 1500; // FIXME: get default feedrate for manual moves, dont hardcode.
+
+  switch (var.VP) {
+    default: return;
+
+    case VP_MOVE_X:
+      axiscode = 'X';
+      if (!ExtUI::canMove(ExtUI::axis_t::X)) goto cannotmove;
+      break;
+
+    case VP_MOVE_Y:
+      axiscode = 'Y';
+      if (!ExtUI::canMove(ExtUI::axis_t::Y)) goto cannotmove;
+      break;
+
+    case VP_MOVE_Z:
+      axiscode = 'Z';
+      speed = 300; // default to 5mm/s
+      if (!ExtUI::canMove(ExtUI::axis_t::Z)) goto cannotmove;
+      break;
+
+    case VP_HOME_ALL: // only used for homing
+      axiscode  = '\0';
+      movevalue = 0; // ignore value sent from display, this VP is _ONLY_ for homing.
+      break;
+  }
+
+  if (!movevalue) {
+    // homing
+    DEBUG_ECHOPAIR(" homing ", AS_CHAR(axiscode));
+    char buf[6] = "G28 X";
+    buf[4] = axiscode;
+    //DEBUG_ECHOPAIR(" ", buf);
+    queue.enqueue_one_now(buf);
+    //DEBUG_ECHOLNPGM(" ✓");
+    ForceCompleteUpdate();
+    return;
+  }
+  else {
+    // movement
+    DEBUG_ECHOPAIR(" move ", AS_CHAR(axiscode));
+    bool old_relative_mode = relative_mode;
+    if (!relative_mode) {
+      //DEBUG_ECHOPGM(" G91");
+      queue.enqueue_now_P(PSTR("G91"));
+      //DEBUG_ECHOPGM(" ✓ ");
+    }
+    char buf[32]; // G1 X9999.99 F12345
+    unsigned int backup_speed = MMS_TO_MMM(feedrate_mm_s);
+    char sign[] = "\0";
+    int16_t value = movevalue / 100;
+    if (movevalue < 0) { value = -value; sign[0] = '-'; }
+    int16_t fraction = ABS(movevalue) % 100;
+    snprintf_P(buf, 32, PSTR("G0 %c%s%d.%02d F%d"), axiscode, sign, value, fraction, speed);
+    //DEBUG_ECHOPAIR(" ", buf);
+    queue.enqueue_one_now(buf);
+    //DEBUG_ECHOLNPGM(" ✓ ");
+    if (backup_speed != speed) {
+      snprintf_P(buf, 32, PSTR("G0 F%d"), backup_speed);
+      queue.enqueue_one_now(buf);
+      //DEBUG_ECHOPAIR(" ", buf);
+    }
+    // while (!enqueue_and_echo_command(buf)) idle();
+    //DEBUG_ECHOLNPGM(" ✓ ");
+    if (!old_relative_mode) {
+      //DEBUG_ECHOPGM("G90");
+      queue.enqueue_now_P(PSTR("G90"));
+      //DEBUG_ECHOPGM(" ✓ ");
+    }
+  }
+
+  ForceCompleteUpdate();
+  DEBUG_ECHOLNPGM("manmv done.");
+  return;
+
+  cannotmove:
+    DEBUG_ECHOLNPAIR(" cannot move ", AS_CHAR(axiscode));
+    return;
+}
+
+#if HAS_PID_HEATING
+  void DGUSScreenHandler::HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t rawvalue = swap16(*(uint16_t*)val_ptr);
+    DEBUG_ECHOLNPAIR("V1:", rawvalue);
+    float value = (float)rawvalue / 10;
+    DEBUG_ECHOLNPAIR("V2:", value);
+    float newvalue = 0;
+
+    switch (var.VP) {
+      default: return;
+        #if HOTENDS >= 1
+          case VP_E0_PID_P: newvalue = value; break;
+          case VP_E0_PID_I: newvalue = scalePID_i(value); break;
+          case VP_E0_PID_D: newvalue = scalePID_d(value); break;
+        #endif
+        #if HOTENDS >= 2
+          case VP_E1_PID_P: newvalue = value; break;
+          case VP_E1_PID_I: newvalue = scalePID_i(value); break;
+          case VP_E1_PID_D: newvalue = scalePID_d(value); break;
+        #endif
+        #if HAS_HEATED_BED
+          case VP_BED_PID_P: newvalue = value; break;
+          case VP_BED_PID_I: newvalue = scalePID_i(value); break;
+          case VP_BED_PID_D: newvalue = scalePID_d(value); break;
+        #endif
+    }
+
+    DEBUG_ECHOLNPAIR_F("V3:", newvalue);
+    *(float *)var.memadr = newvalue;
+
+    skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+  }
+#endif // HAS_PID_HEATING
+
+#if ENABLED(BABYSTEPPING)
+  void DGUSScreenHandler::HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleLiveAdjustZ");
+    int16_t flag  = swap16(*(uint16_t*)val_ptr),
+            steps = flag ? -20 : 20;
+    ExtUI::smartAdjustAxis_steps(steps, ExtUI::axis_t::Z, true);
+    ForceCompleteUpdate();
+  }
+#endif
+
+#if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+
+  void DGUSScreenHandler::HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleFilamentOption");
+
+    uint8_t e_temp = 0;
+    filament_data.heated = false;
+    uint16_t preheat_option = swap16(*(uint16_t*)val_ptr);
+    if (preheat_option <= 8) {      // Load filament type
+      filament_data.action = 1;
+    }
+    else if (preheat_option >= 10) { // Unload filament type
+      preheat_option -= 10;
+      filament_data.action = 2;
+      filament_data.purge_length = DGUS_FILAMENT_PURGE_LENGTH;
+    }
+    else {                          // Cancel filament operation
+      filament_data.action = 0;
+    }
+
+    switch (preheat_option) {
+      case 0: // Load PLA
+        #ifdef PREHEAT_1_TEMP_HOTEND
+          e_temp = PREHEAT_1_TEMP_HOTEND;
+        #endif
+        break;
+      case 1: // Load ABS
+        TERN_(PREHEAT_2_TEMP_HOTEND, e_temp = PREHEAT_2_TEMP_HOTEND);
+        break;
+      case 2: // Load PET
+        #ifdef PREHEAT_3_TEMP_HOTEND
+          e_temp = PREHEAT_3_TEMP_HOTEND;
+        #endif
+        break;
+      case 3: // Load FLEX
+        #ifdef PREHEAT_4_TEMP_HOTEND
+          e_temp = PREHEAT_4_TEMP_HOTEND;
+        #endif
+        break;
+      case 9: // Cool down
+      default:
+        e_temp = 0;
+        break;
+    }
+
+    if (filament_data.action == 0) { // Go back to utility screen
+      #if HOTENDS >= 1
+        thermalManager.setTargetHotend(e_temp, ExtUI::extruder_t::E0);
+      #endif
+      #if HOTENDS >= 2
+        thermalManager.setTargetHotend(e_temp, ExtUI::extruder_t::E1);
+      #endif
+      GotoScreen(DGUSLCD_SCREEN_UTILITY);
+    }
+    else { // Go to the preheat screen to show the heating progress
+      switch (var.VP) {
+        default: return;
+          #if HOTENDS >= 1
+            case VP_E0_FILAMENT_LOAD_UNLOAD:
+              filament_data.extruder = ExtUI::extruder_t::E0;
+              thermalManager.setTargetHotend(e_temp, filament_data.extruder);
+              break;
+          #endif
+          #if HOTENDS >= 2
+            case VP_E1_FILAMENT_LOAD_UNLOAD:
+              filament_data.extruder = ExtUI::extruder_t::E1;
+              thermalManager.setTargetHotend(e_temp, filament_data.extruder);
+              break;
+          #endif
+      }
+      GotoScreen(DGUSLCD_SCREEN_FILAMENT_HEATING);
+    }
+  }
+
+  void DGUSScreenHandler::HandleFilamentLoadUnload(DGUS_VP_Variable &var) {
+    DEBUG_ECHOLNPGM("HandleFilamentLoadUnload");
+    if (filament_data.action <= 0) return;
+
+    // If we close to the target temperature, we can start load or unload the filament
+    if (thermalManager.hotEnoughToExtrude(filament_data.extruder) && \
+        thermalManager.targetHotEnoughToExtrude(filament_data.extruder)) {
+      float movevalue = DGUS_FILAMENT_LOAD_LENGTH_PER_TIME;
+
+      if (filament_data.action == 1) { // load filament
+        if (!filament_data.heated) {
+          //GotoScreen(DGUSLCD_SCREEN_FILAMENT_LOADING);
+          filament_data.heated = true;
+        }
+        movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) + movevalue;
+      }
+      else { // unload filament
+        if (!filament_data.heated) {
+          GotoScreen(DGUSLCD_SCREEN_FILAMENT_UNLOADING);
+          filament_data.heated = true;
+        }
+        // Before unloading extrude to prevent jamming
+        if (filament_data.purge_length >= 0) {
+          movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) + movevalue;
+          filament_data.purge_length -= movevalue;
+        }
+        else {
+          movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) - movevalue;
+        }
+      }
+      ExtUI::setAxisPosition_mm(movevalue, filament_data.extruder);
+    }
+  }
+#endif // DGUS_FILAMENT_LOADUNLOAD
+
+bool DGUSScreenHandler::loop() {
+  dgusdisplay.loop();
+
+  const millis_t ms = millis();
+  static millis_t next_event_ms = 0;
+
+  if (!IsScreenComplete() || ELAPSED(ms, next_event_ms)) {
+    next_event_ms = ms + DGUS_UPDATE_INTERVAL_MS;
+    UpdateScreenVPData();
+  }
+
+  #if ENABLED(SHOW_BOOTSCREEN)
+    static bool booted = false;
+
+    if (!booted && TERN0(POWER_LOSS_RECOVERY, recovery.valid()))
+      booted = true;
+
+    if (!booted && ELAPSED(ms, TERN(USE_MKS_GREEN_UI, 1000, BOOTSCREEN_TIMEOUT)))
+      booted = true;
+  #endif
+  return IsScreenComplete();
+}
+
+#endif // DGUS_LCD_UI_FYSETC

Marlin/src/lcd/extui/dgus/fysetc/DGUSScreenHandler.h

@@ -0,0 +1,240 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../DGUSDisplay.h"
+#include "../DGUSVPVariable.h"
+#include "../DGUSDisplayDef.h"
+
+#include "../../../../inc/MarlinConfig.h"
+
+enum DGUSLCD_Screens : uint8_t;
+
+class DGUSScreenHandler {
+public:
+  DGUSScreenHandler() = default;
+
+  static bool loop();
+
+  // Send all 4 strings that are displayed on the infoscreen, confirmation screen and kill screen
+  // The bools specifing whether the strings are in RAM or FLASH.
+  static void sendinfoscreen(const char *line1, const char *line2, const char *line3, const char *line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
+
+  static void HandleUserConfirmationPopUp(uint16_t ConfirmVP, const char *line1, const char *line2, const char *line3, const char *line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
+
+  // "M117" Message -- msg is a RAM ptr.
+  static void setstatusmessage(const char *msg);
+  // The same for messages from Flash
+  static void setstatusmessagePGM(PGM_P const msg);
+  // Callback for VP "Display wants to change screen on idle printer"
+  static void ScreenChangeHookIfIdle(DGUS_VP_Variable &var, void *val_ptr);
+  // Callback for VP "Screen has been changed"
+  static void ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr);
+
+  // Callback for VP "All Heaters Off"
+  static void HandleAllHeatersOff(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for "Change this temperature"
+  static void HandleTemperatureChanged(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for "Change Flowrate"
+  static void HandleFlowRateChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    // Hook for manual move option
+    static void HandleManualMoveOption(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+
+  // Hook for manual move.
+  static void HandleManualMove(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for manual extrude.
+  static void HandleManualExtrude(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for motor lock and unlook
+  static void HandleMotorLockUnlock(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    // Hook for power loss recovery.
+    static void HandlePowerLossRecovery(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for settings
+  static void HandleSettings(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMChanged(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMExtruderChanged(DGUS_VP_Variable &var, void *val_ptr);
+
+  #if HAS_PID_HEATING
+    // Hook for "Change this temperature PID para"
+    static void HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr);
+    // Hook for PID autotune
+    static void HandlePIDAutotune(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if HAS_BED_PROBE
+    // Hook for "Change probe offset z"
+    static void HandleProbeOffsetZChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if ENABLED(BABYSTEPPING)
+    // Hook for live z adjust action
+    static void HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if HAS_FAN
+    // Hook for fan control
+    static void HandleFanControl(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for heater control
+  static void HandleHeaterControl(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(DGUS_PREHEAT_UI)
+    // Hook for preheat
+    static void HandlePreheat(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+    // Hook for filament load and unload filament option
+    static void HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr);
+    // Hook for filament load and unload
+    static void HandleFilamentLoadUnload(DGUS_VP_Variable &var);
+  #endif
+
+  #if ENABLED(SDSUPPORT)
+    // Callback for VP "Display wants to change screen when there is a SD card"
+    static void ScreenChangeHookIfSD(DGUS_VP_Variable &var, void *val_ptr);
+    // Scroll buttons on the file listing screen.
+    static void DGUSLCD_SD_ScrollFilelist(DGUS_VP_Variable &var, void *val_ptr);
+    // File touched.
+    static void DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr);
+    // start print after confirmation received.
+    static void DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr);
+    // User hit the pause, resume or abort button.
+    static void DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr);
+    // User confirmed the abort action
+    static void DGUSLCD_SD_ReallyAbort(DGUS_VP_Variable &var, void *val_ptr);
+    // User hit the tune button
+    static void DGUSLCD_SD_PrintTune(DGUS_VP_Variable &var, void *val_ptr);
+    // Send a single filename to the display.
+    static void DGUSLCD_SD_SendFilename(DGUS_VP_Variable &var);
+    // Marlin informed us that a new SD has been inserted.
+    static void SDCardInserted();
+    // Marlin informed us that the SD Card has been removed().
+    static void SDCardRemoved();
+    // Marlin informed us about a bad SD Card.
+    static void SDCardError();
+  #endif
+
+  // OK Button the Confirm screen.
+  static void ScreenConfirmedOK(DGUS_VP_Variable &var, void *val_ptr);
+
+  // Update data after went to new screen (by display or by GotoScreen)
+  // remember: store the last-displayed screen, so it can get returned to.
+  // (e.g for pop up messages)
+  static void UpdateNewScreen(DGUSLCD_Screens newscreen, bool popup=false);
+
+  // Recall the remembered screen.
+  static void PopToOldScreen();
+
+  // Make the display show the screen and update all VPs in it.
+  static void GotoScreen(DGUSLCD_Screens screen, bool ispopup = false);
+
+  static void UpdateScreenVPData();
+
+  // Helpers to convert and transfer data to the display.
+  static void DGUSLCD_SendWordValueToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplayPGM(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendTemperaturePID(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPercentageToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPrintProgressToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPrintTimeToDisplay(DGUS_VP_Variable &var);
+
+  #if ENABLED(PRINTCOUNTER)
+    static void DGUSLCD_SendPrintAccTimeToDisplay(DGUS_VP_Variable &var);
+    static void DGUSLCD_SendPrintsTotalToDisplay(DGUS_VP_Variable &var);
+  #endif
+  #if HAS_FAN
+    static void DGUSLCD_SendFanStatusToDisplay(DGUS_VP_Variable &var);
+  #endif
+  static void DGUSLCD_SendHeaterStatusToDisplay(DGUS_VP_Variable &var);
+  #if ENABLED(DGUS_UI_WAITING)
+    static void DGUSLCD_SendWaitingStatusToDisplay(DGUS_VP_Variable &var);
+  #endif
+
+  // Send a value from 0..100 to a variable with a range from 0..255
+  static void DGUSLCD_PercentageToUint8(DGUS_VP_Variable &var, void *val_ptr);
+
+  template<typename T>
+  static void DGUSLCD_SetValueDirectly(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!var.memadr) return;
+    union { unsigned char tmp[sizeof(T)]; T t; } x;
+    unsigned char *ptr = (unsigned char*)val_ptr;
+    LOOP_L_N(i, sizeof(T)) x.tmp[i] = ptr[sizeof(T) - i - 1];
+    *(T*)var.memadr = x.t;
+  }
+
+  // Send a float value to the display.
+  // Display will get a 4-byte integer scaled to the number of digits:
+  // Tell the display the number of digits and it cheats by displaying a dot between...
+  template<unsigned int decimals>
+  static void DGUSLCD_SendFloatAsLongValueToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      float f = *(float *)var.memadr;
+      f *= cpow(10, decimals);
+      dgusdisplay.WriteVariable(var.VP, (long)f);
+    }
+  }
+
+  // Send a float value to the display.
+  // Display will get a 2-byte integer scaled to the number of digits:
+  // Tell the display the number of digits and it cheats by displaying a dot between...
+  template<unsigned int decimals>
+  static void DGUSLCD_SendFloatAsIntValueToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      float f = *(float *)var.memadr;
+      DEBUG_ECHOLNPAIR_F(" >> ", f, 6);
+      f *= cpow(10, decimals);
+      dgusdisplay.WriteVariable(var.VP, (int16_t)f);
+    }
+  }
+
+  // Force an update of all VP on the current screen.
+  static inline void ForceCompleteUpdate() { update_ptr = 0; ScreenComplete = false; }
+  // Has all VPs sent to the screen
+  static inline bool IsScreenComplete() { return ScreenComplete; }
+
+  static inline DGUSLCD_Screens getCurrentScreen() { return current_screen; }
+
+  static inline void SetupConfirmAction( void (*f)()) { confirm_action_cb = f; }
+
+private:
+  static DGUSLCD_Screens current_screen;  //< currently on screen
+  static constexpr uint8_t NUM_PAST_SCREENS = 4;
+  static DGUSLCD_Screens past_screens[NUM_PAST_SCREENS]; //< LIFO with past screens for the "back" button.
+
+  static uint8_t update_ptr;      //< Last sent entry in the VPList for the actual screen.
+  static uint16_t skipVP;         //< When updating the screen data, skip this one, because the user is interacting with it.
+  static bool ScreenComplete;     //< All VPs sent to screen?
+
+  static uint16_t ConfirmVP;      //< context for confirm screen (VP that will be emulated-sent on "OK").
+
+  #if ENABLED(SDSUPPORT)
+    static int16_t top_file;      //< file on top of file chooser
+    static int16_t file_to_print; //< touched file to be confirmed
+  #endif
+
+  static void (*confirm_action_cb)();
+};
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+  #define PLR_SCREEN_RECOVER DGUSLCD_SCREEN_SDPRINTMANIPULATION
+  #define PLR_SCREEN_CANCEL DGUSLCD_SCREEN_STATUS
+#endif

Marlin/src/lcd/extui/dgus/hiprecy/DGUSDisplayDef.cpp

@@ -0,0 +1,485 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/* DGUS VPs changed by George Fu in 2019 for Marlin */
+
+#include "../../../../inc/MarlinConfigPre.h"
+
+#if ENABLED(DGUS_LCD_UI_HIPRECY)
+
+#include "DGUSDisplayDef.h"
+#include "../DGUSDisplay.h"
+#include "../DGUSScreenHandler.h"
+
+#include "../../../../module/temperature.h"
+#include "../../../../module/motion.h"
+#include "../../../../module/planner.h"
+
+#include "../../ui_api.h"
+#include "../../../marlinui.h"
+
+#if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+  uint16_t distanceToMove = 10;
+#endif
+
+const uint16_t VPList_Boot[] PROGMEM = {
+  VP_MARLIN_VERSION,
+  0x0000
+};
+
+const uint16_t VPList_Main[] PROGMEM = {
+  /* VP_M117, for completeness, but it cannot be auto-uploaded. */
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set, VP_E0_STATUS,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set, VP_BED_STATUS,
+  #endif
+  #if HAS_FAN
+    VP_Fan0_Percentage, VP_FAN0_STATUS,
+  #endif
+  VP_XPos, VP_YPos, VP_ZPos,
+  VP_Fan0_Percentage,
+  VP_Feedrate_Percentage,
+  #if ENABLED(LCD_SET_PROGRESS_MANUALLY)
+    VP_PrintProgress_Percentage,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Temp[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Status[] PROGMEM = {
+  /* VP_M117, for completeness, but it cannot be auto-uploaded */
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  #if HAS_FAN
+    VP_Fan0_Percentage,
+  #endif
+  VP_XPos, VP_YPos, VP_ZPos,
+  VP_Fan0_Percentage,
+  VP_Feedrate_Percentage,
+  VP_PrintProgress_Percentage,
+  0x0000
+};
+
+const uint16_t VPList_Status2[] PROGMEM = {
+  /* VP_M117, for completeness, but it cannot be auto-uploaded */
+  #if HOTENDS >= 1
+    VP_Flowrate_E0,
+  #endif
+  #if HOTENDS >= 2
+    VP_Flowrate_E1,
+  #endif
+  VP_PrintProgress_Percentage,
+  VP_PrintTime,
+  0x0000
+};
+
+const uint16_t VPList_Preheat[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_ManualMove[] PROGMEM = {
+  VP_XPos, VP_YPos, VP_ZPos,
+  0x0000
+};
+
+const uint16_t VPList_ManualExtrude[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  VP_EPos,
+  0x0000
+};
+
+const uint16_t VPList_FanAndFeedrate[] PROGMEM = {
+  VP_Feedrate_Percentage, VP_Fan0_Percentage,
+  0x0000
+};
+
+const uint16_t VPList_SD_FlowRates[] PROGMEM = {
+  VP_Flowrate_E0, VP_Flowrate_E1,
+  0x0000
+};
+
+const uint16_t VPList_Filament_heating[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+    VP_E0_FILAMENT_LOAD_UNLOAD,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Filament_load_unload[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_E0_FILAMENT_LOAD_UNLOAD,
+  #endif
+  #if HOTENDS >= 2
+    VP_E1_FILAMENT_LOAD_UNLOAD,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_SDFileList[] PROGMEM = {
+  VP_SD_FileName0, VP_SD_FileName1, VP_SD_FileName2, VP_SD_FileName3, VP_SD_FileName4,
+  0x0000
+};
+
+const uint16_t VPList_SD_PrintManipulation[] PROGMEM = {
+  VP_PrintProgress_Percentage, VP_PrintTime,
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  #if HAS_FAN
+    VP_Fan0_Percentage,
+    #if FAN_COUNT > 1
+      VP_Fan1_Percentage,
+    #endif
+  #endif
+  VP_Flowrate_E0,
+  0x0000
+};
+
+const uint16_t VPList_SDPrintTune[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  VP_Feedrate_Percentage,
+  #if HAS_FAN
+    VP_Fan0_Percentage,
+  #endif
+  VP_Flowrate_E0,
+  VP_SD_Print_ProbeOffsetZ,
+  0x0000
+};
+
+const uint16_t VPList_StepPerMM[] PROGMEM = {
+  VP_X_STEP_PER_MM,
+  VP_Y_STEP_PER_MM,
+  VP_Z_STEP_PER_MM,
+  #if HOTENDS >= 1
+    VP_E0_STEP_PER_MM,
+  #endif
+  #if HOTENDS >= 2
+    VP_E1_STEP_PER_MM,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_PIDE0[] PROGMEM = {
+  #if ENABLED(PIDTEMP)
+    VP_E0_PID_P,
+    VP_E0_PID_I,
+    VP_E0_PID_D,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_PIDBED[] PROGMEM = {
+  #if ENABLED(PIDTEMP)
+    VP_BED_PID_P,
+    VP_BED_PID_I,
+    VP_BED_PID_D,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Infos[] PROGMEM = {
+  VP_MARLIN_VERSION,
+  VP_PrintTime,
+  #if ENABLED(PRINTCOUNTER)
+    VP_PrintAccTime,
+    VP_PrintsTotal,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_PIDTuningWaiting[] PROGMEM = {
+  VP_WAITING_STATUS,
+  0x0000
+};
+
+const uint16_t VPList_FLCPreheat[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_FLCPrinting[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_SD_Print_ProbeOffsetZ,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Z_Offset[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_SD_Print_ProbeOffsetZ,
+  #endif
+  0x0000
+};
+
+const struct VPMapping VPMap[] PROGMEM = {
+  { DGUSLCD_SCREEN_BOOT, VPList_Boot },
+  { DGUSLCD_SCREEN_MAIN, VPList_Main },
+  { DGUSLCD_SCREEN_TEMPERATURE, VPList_Temp },
+  { DGUSLCD_SCREEN_STATUS, VPList_Status },
+  { DGUSLCD_SCREEN_STATUS2, VPList_Status2 },
+  { DGUSLCD_SCREEN_PREHEAT, VPList_Preheat },
+  { DGUSLCD_SCREEN_MANUALMOVE, VPList_ManualMove },
+  { DGUSLCD_SCREEN_Z_OFFSET, VPList_Z_Offset },
+  { DGUSLCD_SCREEN_MANUALEXTRUDE, VPList_ManualExtrude },
+  { DGUSLCD_SCREEN_FILAMENT_HEATING, VPList_Filament_heating },
+  { DGUSLCD_SCREEN_FILAMENT_LOADING, VPList_Filament_load_unload },
+  { DGUSLCD_SCREEN_FILAMENT_UNLOADING, VPList_Filament_load_unload },
+  { DGUSLCD_SCREEN_SDPRINTMANIPULATION, VPList_SD_PrintManipulation },
+  { DGUSLCD_SCREEN_SDFILELIST, VPList_SDFileList },
+  { DGUSLCD_SCREEN_SDPRINTTUNE, VPList_SDPrintTune },
+  { DGUSLCD_SCREEN_WAITING, VPList_PIDTuningWaiting },
+  { DGUSLCD_SCREEN_FLC_PREHEAT, VPList_FLCPreheat },
+  { DGUSLCD_SCREEN_FLC_PRINTING, VPList_FLCPrinting },
+  { DGUSLCD_SCREEN_STEPPERMM, VPList_StepPerMM },
+  { DGUSLCD_SCREEN_PID_E, VPList_PIDE0 },
+  { DGUSLCD_SCREEN_PID_BED, VPList_PIDBED },
+  { DGUSLCD_SCREEN_INFOS, VPList_Infos },
+  { 0 , nullptr } // List is terminated with an nullptr as table entry.
+};
+
+const char MarlinVersion[] PROGMEM = SHORT_BUILD_VERSION;
+
+// Helper to define a DGUS_VP_Variable for common use cases.
+#define VPHELPER(VPADR, VPADRVAR, RXFPTR, TXFPTR ) { .VP=VPADR, .memadr=VPADRVAR, .size=sizeof(VPADRVAR), \
+  .set_by_display_handler = RXFPTR, .send_to_display_handler = TXFPTR }
+
+// Helper to define a DGUS_VP_Variable when the sizeo of the var cannot be determined automaticalyl (eg. a string)
+#define VPHELPER_STR(VPADR, VPADRVAR, STRLEN, RXFPTR, TXFPTR ) { .VP=VPADR, .memadr=VPADRVAR, .size=STRLEN, \
+  .set_by_display_handler = RXFPTR, .send_to_display_handler = TXFPTR }
+
+const struct DGUS_VP_Variable ListOfVP[] PROGMEM = {
+  // Helper to detect touch events
+  VPHELPER(VP_SCREENCHANGE, nullptr, ScreenHandler.ScreenChangeHook, nullptr),
+  VPHELPER(VP_SCREENCHANGE_ASK, nullptr, ScreenHandler.ScreenChangeHookIfIdle, nullptr),
+  #if ENABLED(SDSUPPORT)
+    VPHELPER(VP_SCREENCHANGE_WHENSD, nullptr, ScreenHandler.ScreenChangeHookIfSD, nullptr),
+  #endif
+  VPHELPER(VP_CONFIRMED, nullptr, ScreenHandler.ScreenConfirmedOK, nullptr),
+
+  VPHELPER(VP_TEMP_ALL_OFF, nullptr, &ScreenHandler.HandleAllHeatersOff, nullptr),
+
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    VPHELPER(VP_MOVE_OPTION, &distanceToMove, &ScreenHandler.HandleManualMoveOption, nullptr),
+  #endif
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    VPHELPER(VP_MOVE_X, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+  #else
+    VPHELPER(VP_MOVE_X, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+  #endif
+  VPHELPER(VP_MOTOR_LOCK_UNLOK, nullptr, &ScreenHandler.HandleMotorLockUnlock, nullptr),
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    VPHELPER(VP_POWER_LOSS_RECOVERY, nullptr, &ScreenHandler.HandlePowerLossRecovery, nullptr),
+  #endif
+  VPHELPER(VP_SETTINGS, nullptr, &ScreenHandler.HandleSettings, nullptr),
+  #if ENABLED(SINGLE_Z_CALIBRATION)
+    VPHELPER(VP_Z_CALIBRATE, nullptr, &ScreenHandler.HandleZCalibration, nullptr),
+  #endif
+  #if ENABLED(FIRST_LAYER_CAL)
+    VPHELPER(VP_Z_FIRST_LAYER_CAL, nullptr, &ScreenHandler.HandleFirstLayerCal, nullptr),
+  #endif
+
+  { .VP = VP_MARLIN_VERSION, .memadr = (void*)MarlinVersion, .size = VP_MARLIN_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  // M117 LCD String (We don't need the string in memory but "just" push it to the display on demand, hence the nullptr
+  { .VP = VP_M117, .memadr = nullptr, .size = VP_M117_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplay },
+
+  // Temperature Data
+  #if HOTENDS >= 1
+    VPHELPER(VP_T_E0_Is, &thermalManager.temp_hotend[0].celsius, nullptr, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_E0_Set, &thermalManager.temp_hotend[0].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E0, &planner.flow_percentage[ExtUI::extruder_t::E0], ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_EPos, &destination.e, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+    VPHELPER(VP_MOVE_E0, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E0_CONTROL, &thermalManager.temp_hotend[0].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E0_STATUS, &thermalManager.temp_hotend[0].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+    #if ENABLED(DGUS_PREHEAT_UI)
+      VPHELPER(VP_E0_BED_PREHEAT, nullptr, &ScreenHandler.HandlePreheat, nullptr),
+    #endif
+    #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+      VPHELPER(VP_E0_FILAMENT_LOAD_UNLOAD, nullptr, &ScreenHandler.HandleFilamentOption, &ScreenHandler.HandleFilamentLoadUnload),
+    #endif
+    #if ENABLED(PIDTEMP)
+      VPHELPER(VP_E0_PID_P, &thermalManager.temp_hotend[0].pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_I, &thermalManager.temp_hotend[0].pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_D, &thermalManager.temp_hotend[0].pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_E0, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
+    #endif
+  #endif
+  #if HOTENDS >= 2
+    VPHELPER(VP_T_E1_Is, &thermalManager.temp_hotend[1].celsius, nullptr, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_E1_Set, &thermalManager.temp_hotend[1].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E1, nullptr, ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_MOVE_E1, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E1_CONTROL, &thermalManager.temp_hotend[1].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E1_STATUS, &thermalManager.temp_hotend[1].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+  #endif
+  #if HAS_HEATED_BED
+    VPHELPER(VP_T_Bed_Is, &thermalManager.temp_bed.celsius, nullptr, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_Bed_Set, &thermalManager.temp_bed.target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_BED_CONTROL, &thermalManager.temp_bed.target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_BED_STATUS, &thermalManager.temp_bed.target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+    #if ENABLED(PIDTEMP)
+      VPHELPER(VP_BED_PID_P, &thermalManager.temp_bed.pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_I, &thermalManager.temp_bed.pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_D, &thermalManager.temp_bed.pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_BED, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
+    #endif
+  #endif
+
+  // Fan Data
+  #if HAS_FAN
+    #define FAN_VPHELPER(N) \
+      VPHELPER(VP_Fan##N##_Percentage, &thermalManager.fan_speed[N], ScreenHandler.DGUSLCD_PercentageToUint8, &ScreenHandler.DGUSLCD_SendPercentageToDisplay), \
+      VPHELPER(VP_FAN##N##_CONTROL, &thermalManager.fan_speed[N], &ScreenHandler.HandleFanControl, nullptr), \
+      VPHELPER(VP_FAN##N##_STATUS, &thermalManager.fan_speed[N], nullptr, &ScreenHandler.DGUSLCD_SendFanStatusToDisplay),
+    REPEAT(FAN_COUNT, FAN_VPHELPER)
+  #endif
+
+  // Feedrate
+  VPHELPER(VP_Feedrate_Percentage, &feedrate_percentage, ScreenHandler.DGUSLCD_SetValueDirectly<int16_t>, &ScreenHandler.DGUSLCD_SendWordValueToDisplay ),
+
+  // Position Data
+  VPHELPER(VP_XPos, &current_position.x, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_YPos, &current_position.y, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_ZPos, &current_position.z, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+
+  // Print Progress
+  VPHELPER(VP_PrintProgress_Percentage, nullptr, nullptr, ScreenHandler.DGUSLCD_SendPrintProgressToDisplay ),
+
+  // Print Time
+  VPHELPER_STR(VP_PrintTime, nullptr, VP_PrintTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintTimeToDisplay ),
+  #if ENABLED(PRINTCOUNTER)
+    VPHELPER_STR(VP_PrintAccTime, nullptr, VP_PrintAccTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintAccTimeToDisplay ),
+    VPHELPER_STR(VP_PrintsTotal, nullptr, VP_PrintsTotal_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintsTotalToDisplay ),
+  #endif
+
+  VPHELPER(VP_X_STEP_PER_MM, &planner.settings.axis_steps_per_mm[X_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Y_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Y_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Z_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Z_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  #if HOTENDS >= 1
+    VPHELPER(VP_E0_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(0)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  #endif
+  #if HOTENDS >= 2
+    VPHELPER(VP_E1_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(1)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  #endif
+
+  // SDCard File listing.
+  #if ENABLED(SDSUPPORT)
+    VPHELPER(VP_SD_ScrollEvent, nullptr, ScreenHandler.DGUSLCD_SD_ScrollFilelist, nullptr),
+    VPHELPER(VP_SD_FileSelected, nullptr, ScreenHandler.DGUSLCD_SD_FileSelected, nullptr),
+    VPHELPER(VP_SD_FileSelectConfirm, nullptr, ScreenHandler.DGUSLCD_SD_StartPrint, nullptr),
+    VPHELPER_STR(VP_SD_FileName0,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName1,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName2,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName3,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName4,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER(VP_SD_ResumePauseAbort, nullptr, ScreenHandler.DGUSLCD_SD_ResumePauseAbort, nullptr),
+    VPHELPER(VP_SD_AbortPrintConfirmed, nullptr, ScreenHandler.DGUSLCD_SD_ReallyAbort, nullptr),
+    VPHELPER(VP_SD_Print_Setting, nullptr, ScreenHandler.DGUSLCD_SD_PrintTune, nullptr),
+    #if HAS_BED_PROBE
+      VPHELPER(VP_SD_Print_ProbeOffsetZ, &probe.offset.z, ScreenHandler.HandleProbeOffsetZChanged, &ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<2>),
+      #if ENABLED(BABYSTEPPING)
+        VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, ScreenHandler.HandleLiveAdjustZ, nullptr),
+      #endif
+    #endif
+  #endif
+
+  #if ENABLED(DGUS_UI_WAITING)
+    VPHELPER(VP_WAITING_STATUS, nullptr, nullptr, ScreenHandler.DGUSLCD_SendWaitingStatusToDisplay),
+  #endif
+
+  // Messages for the User, shared by the popup and the kill screen. They cant be autouploaded as we do not buffer content.
+  { .VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+
+  VPHELPER(0, 0, 0, 0)  // must be last entry.
+};
+
+#endif // DGUS_LCD_UI_HIPRECY

Marlin/src/lcd/extui/dgus/hiprecy/DGUSDisplayDef.h

@@ -0,0 +1,292 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../DGUSDisplayDef.h"
+
+enum DGUSLCD_Screens : uint8_t {
+  DGUSLCD_SCREEN_BOOT                 = 160,
+  DGUSLCD_SCREEN_MAIN                 =   1,
+  DGUSLCD_SCREEN_STATUS               =   1,
+  DGUSLCD_SCREEN_STATUS2              =   1,
+  DGUSLCD_SCREEN_POWER_LOSS           =  17,
+  DGUSLCD_SCREEN_TEMPERATURE          =  40,
+  DGUSLCD_SCREEN_MANUALMOVE           =  86,
+  DGUSLCD_SCREEN_PREHEAT              =  48,
+  DGUSLCD_SCREEN_UTILITY              =  70,
+  DGUSLCD_SCREEN_FILAMENT_HEATING     =  80,
+  DGUSLCD_SCREEN_FILAMENT_LOADING     =  76,
+  DGUSLCD_SCREEN_FILAMENT_UNLOADING   =  82,
+  DGUSLCD_SCREEN_MANUALEXTRUDE        =  84,
+  DGUSLCD_SCREEN_Z_OFFSET             =  88,
+  DGUSLCD_SCREEN_SDFILELIST           =   3,
+  DGUSLCD_SCREEN_SDPRINTMANIPULATION  =   7,
+  DGUSLCD_SCREEN_SDPRINTTUNE          =   9,
+  DGUSLCD_SCREEN_FLC_PREHEAT          =  94,
+  DGUSLCD_SCREEN_FLC_PRINTING         =  96,
+  DGUSLCD_SCREEN_STEPPERMM            = 122,
+  DGUSLCD_SCREEN_PID_E                = 126,
+  DGUSLCD_SCREEN_PID_BED              = 128,
+  DGUSLCD_SCREEN_INFOS                = 131,
+  DGUSLCD_SCREEN_CONFIRM              = 240,
+  DGUSLCD_SCREEN_KILL                 = 250, ///< Kill Screen. Must always be 250 (to be able to display "Error wrong LCD Version")
+  DGUSLCD_SCREEN_WAITING              = 251,
+  DGUSLCD_SCREEN_POPUP                = 252, ///< special target, popup screen will also return this code to say "return to previous screen"
+  DGUSLDC_SCREEN_UNUSED               = 255
+};
+
+// Display Memory layout used (T5UID)
+// Except system variables this is arbitrary, just to organize stuff....
+
+// 0x0000 .. 0x0FFF  -- System variables and reserved by the display
+// 0x1000 .. 0x1FFF  -- Variables to never change location, regardless of UI Version
+// 0x2000 .. 0x2FFF  -- Controls (VPs that will trigger some action)
+// 0x3000 .. 0x4FFF  -- Marlin Data to be displayed
+// 0x5000 ..         -- SPs (if we want to modify display elements, e.g change color or like) -- currently unused
+
+// As there is plenty of space (at least most displays have >8k RAM), we do not pack them too tight,
+// so that we can keep variables nicely together in the address space.
+
+// UI Version always on 0x1000...0x1002 so that the firmware can check this and bail out.
+constexpr uint16_t VP_UI_VERSION_MAJOR = 0x1000;  // Major -- incremented when incompatible
+constexpr uint16_t VP_UI_VERSION_MINOR = 0x1001;  // Minor -- incremented on new features, but compatible
+constexpr uint16_t VP_UI_VERSION_PATCH = 0x1002;  // Patch -- fixed which do not change functionality.
+constexpr uint16_t VP_UI_FLAVOUR       = 0x1010;  // lets reserve 16 bytes here to determine if UI is suitable for this Marlin. tbd.
+
+// Storage space for the Killscreen messages. 0x1100 - 0x1200 . Reused for the popup.
+constexpr uint16_t VP_MSGSTR1 = 0x1100;
+constexpr uint8_t VP_MSGSTR1_LEN = 0x20;  // might be more place for it...
+constexpr uint16_t VP_MSGSTR2 = 0x1140;
+constexpr uint8_t VP_MSGSTR2_LEN = 0x20;
+constexpr uint16_t VP_MSGSTR3 = 0x1180;
+constexpr uint8_t VP_MSGSTR3_LEN = 0x20;
+constexpr uint16_t VP_MSGSTR4 = 0x11C0;
+constexpr uint8_t VP_MSGSTR4_LEN = 0x20;
+
+// Screenchange request for screens that only make sense when printer is idle.
+// e.g movement is only allowed if printer is not printing.
+// Marlin must confirm by setting the screen manually.
+constexpr uint16_t VP_SCREENCHANGE_ASK = 0x2000;
+constexpr uint16_t VP_SCREENCHANGE = 0x2001;   // Key-Return button to new menu pressed. Data contains target screen in low byte and info in high byte.
+constexpr uint16_t VP_TEMP_ALL_OFF = 0x2002;   // Turn all heaters off. Value arbitrary ;)=
+constexpr uint16_t VP_SCREENCHANGE_WHENSD = 0x2003; // "Print" Button touched -- go only there if there is an SD Card.
+
+constexpr uint16_t VP_CONFIRMED = 0x2010; // OK on confirm screen.
+
+// Buttons on the SD-Card File listing.
+constexpr uint16_t VP_SD_ScrollEvent = 0x2020; // Data: 0 for "up a directory", numbers are the amount to scroll, e.g -1 one up, 1 one down
+constexpr uint16_t VP_SD_FileSelected = 0x2022; // Number of file field selected.
+constexpr uint16_t VP_SD_FileSelectConfirm = 0x2024; // (This is a virtual VP and emulated by the Confirm Screen when a file has been confirmed)
+
+constexpr uint16_t VP_SD_ResumePauseAbort = 0x2026; // Resume(Data=0), Pause(Data=1), Abort(Data=2) SD Card prints
+constexpr uint16_t VP_SD_AbortPrintConfirmed = 0x2028; // Abort print confirmation (virtual, will be injected by the confirm dialog)
+constexpr uint16_t VP_SD_Print_Setting = 0x2040;
+constexpr uint16_t VP_SD_Print_LiveAdjustZ = 0x2050; // Data: 0 down, 1 up
+
+// Controls for movement (we can't use the incremental / decremental feature of the display at this feature works only with 16 bit values
+// (which would limit us to 655.35mm, which is likely not a problem for common setups, but i don't want to rule out hangprinters support)
+// A word about the coding: The VP will be per axis and the return code will be an signed 16 bit value in 0.01 mm resolution, telling us
+// the relative travel amount t he user wants to do. So eg. if the display sends us VP=2100 with value 100, the user wants us to move X by +1 mm.
+constexpr uint16_t VP_MOVE_X = 0x2100;
+constexpr uint16_t VP_MOVE_Y = 0x2102;
+constexpr uint16_t VP_MOVE_Z = 0x2104;
+constexpr uint16_t VP_MOVE_E0 = 0x2110;
+constexpr uint16_t VP_MOVE_E1 = 0x2112;
+//constexpr uint16_t VP_MOVE_E2 = 0x2114;
+//constexpr uint16_t VP_MOVE_E3 = 0x2116;
+//constexpr uint16_t VP_MOVE_E4 = 0x2118;
+//constexpr uint16_t VP_MOVE_E5 = 0x211A;
+constexpr uint16_t VP_HOME_ALL = 0x2120;
+constexpr uint16_t VP_MOTOR_LOCK_UNLOK = 0x2130;
+
+// Power loss recovery
+constexpr uint16_t VP_POWER_LOSS_RECOVERY = 0x2180;
+
+// Fan Control Buttons , switch between "off" and "on"
+constexpr uint16_t VP_FAN0_CONTROL = 0x2200;
+constexpr uint16_t VP_FAN1_CONTROL = 0x2202;
+//constexpr uint16_t VP_FAN2_CONTROL = 0x2204;
+//constexpr uint16_t VP_FAN3_CONTROL = 0x2206;
+
+// Heater Control Buttons , triged between "cool down" and "heat PLA" state
+constexpr uint16_t VP_E0_CONTROL = 0x2210;
+constexpr uint16_t VP_E1_CONTROL = 0x2212;
+//constexpr uint16_t VP_E2_CONTROL = 0x2214;
+//constexpr uint16_t VP_E3_CONTROL = 0x2216;
+//constexpr uint16_t VP_E4_CONTROL = 0x2218;
+//constexpr uint16_t VP_E5_CONTROL = 0x221A;
+constexpr uint16_t VP_BED_CONTROL = 0x221C;
+
+// Preheat
+constexpr uint16_t VP_E0_BED_PREHEAT = 0x2220;
+//constexpr uint16_t VP_E1_BED_PREHEAT = 0x2222;
+//constexpr uint16_t VP_E2_BED_PREHEAT = 0x2224;
+//constexpr uint16_t VP_E3_BED_PREHEAT = 0x2226;
+//constexpr uint16_t VP_E4_BED_PREHEAT = 0x2228;
+//constexpr uint16_t VP_E5_BED_PREHEAT = 0x222A;
+
+// Filament load and unload
+constexpr uint16_t VP_E0_FILAMENT_LOAD_UNLOAD = 0x2300;
+
+// Settings store , reset
+constexpr uint16_t VP_SETTINGS = 0x2400;
+
+// PID autotune
+constexpr uint16_t VP_PID_AUTOTUNE_E0 = 0x2410;
+//constexpr uint16_t VP_PID_AUTOTUNE_E1 = 0x2412;
+//constexpr uint16_t VP_PID_AUTOTUNE_E2 = 0x2414;
+//constexpr uint16_t VP_PID_AUTOTUNE_E3 = 0x2416;
+//constexpr uint16_t VP_PID_AUTOTUNE_E4 = 0x2418;
+//constexpr uint16_t VP_PID_AUTOTUNE_E5 = 0x241A;
+constexpr uint16_t VP_PID_AUTOTUNE_BED = 0x2420;
+
+// Calibrate Z
+constexpr uint16_t VP_Z_CALIBRATE = 0x2430;
+
+// First layer cal
+constexpr uint16_t VP_Z_FIRST_LAYER_CAL = 0x2500; // Data: 0 - Cancel first layer cal progress, >0 filament type have loaded
+
+// Firmware version on the boot screen.
+constexpr uint16_t VP_MARLIN_VERSION = 0x3000;
+constexpr uint8_t VP_MARLIN_VERSION_LEN = 16;   // there is more space on the display, if needed.
+
+// Place for status messages.
+constexpr uint16_t VP_M117 = 0x3020;
+constexpr uint8_t VP_M117_LEN = 0x20;
+
+// Temperatures.
+constexpr uint16_t VP_T_E0_Is = 0x3060;  // 4 Byte Integer
+constexpr uint16_t VP_T_E0_Set = 0x3062; // 2 Byte Integer
+constexpr uint16_t VP_T_E1_Is = 0x3064;  // 4 Byte Integer
+
+// reserved to support up to 6 Extruders:
+//constexpr uint16_t VP_T_E1_Set = 0x3066; // 2 Byte Integer
+//constexpr uint16_t VP_T_E2_Is = 0x3068;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E2_Set = 0x306A; // 2 Byte Integer
+//constexpr uint16_t VP_T_E3_Is = 0x306C;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E3_Set = 0x306E; // 2 Byte Integer
+//constexpr uint16_t VP_T_E4_Is = 0x3070;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E4_Set = 0x3072; // 2 Byte Integer
+//constexpr uint16_t VP_T_E4_Is = 0x3074;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E4_Set = 0x3076; // 2 Byte Integer
+//constexpr uint16_t VP_T_E5_Is = 0x3078;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E5_Set = 0x307A; // 2 Byte Integer
+
+constexpr uint16_t VP_T_Bed_Is = 0x3080;  // 4 Byte Integer
+constexpr uint16_t VP_T_Bed_Set = 0x3082; // 2 Byte Integer
+
+constexpr uint16_t VP_Flowrate_E0 = 0x3090; // 2 Byte Integer
+constexpr uint16_t VP_Flowrate_E1 = 0x3092; // 2 Byte Integer
+
+// reserved for up to 6 Extruders:
+//constexpr uint16_t VP_Flowrate_E2 = 0x3094;
+//constexpr uint16_t VP_Flowrate_E3 = 0x3096;
+//constexpr uint16_t VP_Flowrate_E4 = 0x3098;
+//constexpr uint16_t VP_Flowrate_E5 = 0x309A;
+
+constexpr uint16_t VP_Fan0_Percentage = 0x3100;  // 2 Byte Integer (0..100)
+constexpr uint16_t VP_Fan1_Percentage = 0x3102;  // 2 Byte Integer (0..100)
+constexpr uint16_t VP_Fan2_Percentage = 0x3104;  // 2 Byte Integer (0..100)
+constexpr uint16_t VP_Fan3_Percentage = 0x3106;  // 2 Byte Integer (0..100)
+constexpr uint16_t VP_Feedrate_Percentage = 0x3108; // 2 Byte Integer (0..100)
+
+// Actual Position
+constexpr uint16_t VP_XPos = 0x3110;  // 4 Byte Fixed point number; format xxx.yy
+constexpr uint16_t VP_YPos = 0x3112;  // 4 Byte Fixed point number; format xxx.yy
+constexpr uint16_t VP_ZPos = 0x3114;  // 4 Byte Fixed point number; format xxx.yy
+
+constexpr uint16_t VP_EPos = 0x3120;  // 4 Byte Fixed point number; format xxx.yy
+
+constexpr uint16_t VP_PrintProgress_Percentage = 0x3130; // 2 Byte Integer (0..100)
+
+constexpr uint16_t VP_PrintTime = 0x3140;
+constexpr uint16_t VP_PrintTime_LEN = 32;
+
+constexpr uint16_t VP_PrintAccTime = 0x3160;
+constexpr uint16_t VP_PrintAccTime_LEN = 32;
+
+constexpr uint16_t VP_PrintsTotal = 0x3180;
+constexpr uint16_t VP_PrintsTotal_LEN = 16;
+
+// SDCard File Listing
+constexpr uint16_t VP_SD_FileName_LEN = 32; // LEN is shared for all entries.
+constexpr uint16_t DGUS_SD_FILESPERSCREEN = 5; // FIXME move that info to the display and read it from there.
+constexpr uint16_t VP_SD_FileName0 = 0x3200;
+constexpr uint16_t VP_SD_FileName1 = 0x3220;
+constexpr uint16_t VP_SD_FileName2 = 0x3240;
+constexpr uint16_t VP_SD_FileName3 = 0x3260;
+constexpr uint16_t VP_SD_FileName4 = 0x3280;
+
+constexpr uint16_t VP_SD_Print_ProbeOffsetZ = 0x32A0; //
+
+constexpr uint16_t VP_SD_Print_Filename = 0x32C0; //
+// Fan status
+constexpr uint16_t VP_FAN0_STATUS = 0x3300;
+constexpr uint16_t VP_FAN1_STATUS = 0x3302;
+//constexpr uint16_t VP_FAN2_STATUS = 0x3304;
+//constexpr uint16_t VP_FAN3_STATUS = 0x3306;
+
+// Heater status
+constexpr uint16_t VP_E0_STATUS = 0x3310;
+//constexpr uint16_t VP_E1_STATUS = 0x3312;
+//constexpr uint16_t VP_E2_STATUS = 0x3314;
+//constexpr uint16_t VP_E3_STATUS = 0x3316;
+//constexpr uint16_t VP_E4_STATUS = 0x3318;
+//constexpr uint16_t VP_E5_STATUS = 0x331A;
+constexpr uint16_t VP_BED_STATUS = 0x331C;
+
+constexpr uint16_t VP_MOVE_OPTION = 0x3400;
+
+// Step per mm
+constexpr uint16_t VP_X_STEP_PER_MM = 0x3600; // at the moment , 2 byte unsigned int , 0~1638.4
+//constexpr uint16_t VP_X2_STEP_PER_MM = 0x3602;
+constexpr uint16_t VP_Y_STEP_PER_MM = 0x3604;
+//constexpr uint16_t VP_Y2_STEP_PER_MM = 0x3606;
+constexpr uint16_t VP_Z_STEP_PER_MM = 0x3608;
+//constexpr uint16_t VP_Z2_STEP_PER_MM = 0x360A;
+constexpr uint16_t VP_E0_STEP_PER_MM = 0x3610;
+//constexpr uint16_t VP_E1_STEP_PER_MM = 0x3612;
+//constexpr uint16_t VP_E2_STEP_PER_MM = 0x3614;
+//constexpr uint16_t VP_E3_STEP_PER_MM = 0x3616;
+//constexpr uint16_t VP_E4_STEP_PER_MM = 0x3618;
+//constexpr uint16_t VP_E5_STEP_PER_MM = 0x361A;
+
+// PIDs
+constexpr uint16_t VP_E0_PID_P = 0x3700; // at the moment , 2 byte unsigned int , 0~1638.4
+constexpr uint16_t VP_E0_PID_I = 0x3702;
+constexpr uint16_t VP_E0_PID_D = 0x3704;
+constexpr uint16_t VP_BED_PID_P = 0x3710;
+constexpr uint16_t VP_BED_PID_I = 0x3712;
+constexpr uint16_t VP_BED_PID_D = 0x3714;
+
+// Wating screen status
+constexpr uint16_t VP_WAITING_STATUS = 0x3800;
+
+// SPs for certain variables...
+// located at 0x5000 and up
+// Not used yet!
+// This can be used e.g to make controls / data display invisible
+constexpr uint16_t SP_T_E0_Is = 0x5000;
+constexpr uint16_t SP_T_E0_Set = 0x5010;
+constexpr uint16_t SP_T_E1_Is = 0x5020;
+constexpr uint16_t SP_T_Bed_Is = 0x5030;
+constexpr uint16_t SP_T_Bed_Set = 0x5040;

Marlin/src/lcd/extui/dgus/hiprecy/DGUSScreenHandler.cpp

@@ -0,0 +1,418 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../../../inc/MarlinConfigPre.h"
+
+#if ENABLED(DGUS_LCD_UI_HYPRECY)
+
+#include "../DGUSScreenHandler.h"
+
+#include "../../../../MarlinCore.h"
+#include "../../../../gcode/queue.h"
+#include "../../../../libs/duration_t.h"
+#include "../../../../module/settings.h"
+#include "../../../../module/temperature.h"
+#include "../../../../module/motion.h"
+#include "../../../../module/planner.h"
+#include "../../../../module/printcounter.h"
+#include "../../../../sd/cardreader.h"
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+  #include "../../../../feature/powerloss.h"
+#endif
+
+#if ENABLED(SDSUPPORT)
+
+  void DGUSScreenHandler::DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t touched_nr = (int16_t)swap16(*(uint16_t*)val_ptr) + top_file;
+    if (touched_nr > filelist.count()) return;
+    if (!filelist.seek(touched_nr)) return;
+
+    if (filelist.isDir()) {
+      filelist.changeDir(filelist.filename());
+      top_file = 0;
+      ForceCompleteUpdate();
+      return;
+    }
+
+    #if ENABLED(DGUS_PRINT_FILENAME)
+      // Send print filename
+      dgusdisplay.WriteVariable(VP_SD_Print_Filename, filelist.filename(), VP_SD_FileName_LEN, true);
+    #endif
+
+    // Setup Confirmation screen
+    file_to_print = touched_nr;
+
+    HandleUserConfirmationPopUp(VP_SD_FileSelectConfirm, nullptr, PSTR("Print file"), filelist.filename(), PSTR("from SD Card?"), true, true, false, true);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!filelist.seek(file_to_print)) return;
+    ExtUI::printFile(filelist.shortFilename());
+    GotoScreen(DGUSLCD_SCREEN_SDPRINTMANIPULATION);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr) {
+
+    if (!ExtUI::isPrintingFromMedia()) return; // avoid race condition when user stays in this menu and printer finishes.
+    switch (swap16(*(uint16_t*)val_ptr)) {
+      case 0: { // Resume
+        if (ExtUI::isPrintingFromMediaPaused()) {
+          ExtUI::resumePrint();
+        }
+      } break;
+
+      case 1: // Pause
+
+        GotoScreen(MKSLCD_SCREEN_PAUSE);
+        if (!ExtUI::isPrintingFromMediaPaused()) {
+          ExtUI::pausePrint();
+          //ExtUI::mks_pausePrint();
+        }
+        break;
+      case 2: // Abort
+        HandleUserConfirmationPopUp(VP_SD_AbortPrintConfirmed, nullptr, PSTR("Abort printing"), filelist.filename(), PSTR("?"), true, true, false, true);
+        break;
+    }
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_SendFilename(DGUS_VP_Variable& var) {
+    uint16_t target_line = (var.VP - VP_SD_FileName0) / VP_SD_FileName_LEN;
+    if (target_line > DGUS_SD_FILESPERSCREEN) return;
+    char tmpfilename[VP_SD_FileName_LEN + 1] = "";
+    var.memadr = (void*)tmpfilename;
+
+    if (filelist.seek(top_file + target_line)) {
+      snprintf_P(tmpfilename, VP_SD_FileName_LEN, PSTR("%s%c"), filelist.filename(), filelist.isDir() ? '/' : 0); // snprintf_P(tmpfilename, VP_SD_FileName_LEN, PSTR("%s"), filelist.filename());
+    }
+    DGUSLCD_SendStringToDisplay(var);
+  }
+
+  void DGUSScreenHandler::SDCardInserted() {
+    top_file = 0;
+    filelist.refresh();
+    auto cs = getCurrentScreen();
+    if (cs == DGUSLCD_SCREEN_MAIN || cs == DGUSLCD_SCREEN_STATUS)
+      GotoScreen(DGUSLCD_SCREEN_SDFILELIST);
+  }
+
+  void DGUSScreenHandler::SDCardRemoved() {
+    if (current_screen == DGUSLCD_SCREEN_SDFILELIST
+        || (current_screen == DGUSLCD_SCREEN_CONFIRM && (ConfirmVP == VP_SD_AbortPrintConfirmed || ConfirmVP == VP_SD_FileSelectConfirm))
+        || current_screen == DGUSLCD_SCREEN_SDPRINTMANIPULATION
+    ) GotoScreen(DGUSLCD_SCREEN_MAIN);
+  }
+
+#endif // SDSUPPORT
+
+void DGUSScreenHandler::ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr) {
+  uint8_t *tmp = (uint8_t*)val_ptr;
+
+  // The keycode in target is coded as <from-frame><to-frame>, so 0x0100A means
+  // from screen 1 (main) to 10 (temperature). DGUSLCD_SCREEN_POPUP is special,
+  // meaning "return to previous screen"
+  DGUSLCD_Screens target = (DGUSLCD_Screens)tmp[1];
+
+  DEBUG_ECHOLNPAIR("\n DEBUG target", target);
+
+  if (target == DGUSLCD_SCREEN_POPUP) {
+    // Special handling for popup is to return to previous menu
+    if (current_screen == DGUSLCD_SCREEN_POPUP && confirm_action_cb) confirm_action_cb();
+    PopToOldScreen();
+    return;
+  }
+
+  UpdateNewScreen(target);
+
+  #ifdef DEBUG_DGUSLCD
+    if (!DGUSLCD_FindScreenVPMapList(target)) DEBUG_ECHOLNPAIR("WARNING: No screen Mapping found for ", target);
+  #endif
+}
+
+void DGUSScreenHandler::HandleManualMove(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleManualMove");
+
+  int16_t movevalue = swap16(*(uint16_t*)val_ptr);
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    if (movevalue) {
+      const uint16_t choice = *(uint16_t*)var.memadr;
+      movevalue = movevalue < 0 ? -choice : choice;
+    }
+  #endif
+  char axiscode;
+  unsigned int speed = 1500; // FIXME: get default feedrate for manual moves, dont hardcode.
+
+  switch (var.VP) {
+    default: return;
+
+    case VP_MOVE_X:
+      axiscode = 'X';
+      if (!ExtUI::canMove(ExtUI::axis_t::X)) goto cannotmove;
+      break;
+
+    case VP_MOVE_Y:
+      axiscode = 'Y';
+      if (!ExtUI::canMove(ExtUI::axis_t::Y)) goto cannotmove;
+      break;
+
+    case VP_MOVE_Z:
+      axiscode = 'Z';
+      speed = 300; // default to 5mm/s
+      if (!ExtUI::canMove(ExtUI::axis_t::Z)) goto cannotmove;
+      break;
+
+    case VP_HOME_ALL: // only used for homing
+      axiscode  = '\0';
+      movevalue = 0; // ignore value sent from display, this VP is _ONLY_ for homing.
+      break;
+  }
+
+  if (!movevalue) {
+    // homing
+    DEBUG_ECHOPAIR(" homing ", AS_CHAR(axiscode));
+    char buf[6] = "G28 X";
+    buf[4] = axiscode;
+    //DEBUG_ECHOPAIR(" ", buf);
+    queue.enqueue_one_now(buf);
+    //DEBUG_ECHOLNPGM(" ✓");
+    ForceCompleteUpdate();
+    return;
+  }
+  else {
+    // movement
+    DEBUG_ECHOPAIR(" move ", AS_CHAR(axiscode));
+    bool old_relative_mode = relative_mode;
+    if (!relative_mode) {
+      //DEBUG_ECHOPGM(" G91");
+      queue.enqueue_now_P(PSTR("G91"));
+      //DEBUG_ECHOPGM(" ✓ ");
+    }
+    char buf[32]; // G1 X9999.99 F12345
+    unsigned int backup_speed = MMS_TO_MMM(feedrate_mm_s);
+    char sign[] = "\0";
+    int16_t value = movevalue / 100;
+    if (movevalue < 0) { value = -value; sign[0] = '-'; }
+    int16_t fraction = ABS(movevalue) % 100;
+    snprintf_P(buf, 32, PSTR("G0 %c%s%d.%02d F%d"), axiscode, sign, value, fraction, speed);
+    //DEBUG_ECHOPAIR(" ", buf);
+    queue.enqueue_one_now(buf);
+    //DEBUG_ECHOLNPGM(" ✓ ");
+    if (backup_speed != speed) {
+      snprintf_P(buf, 32, PSTR("G0 F%d"), backup_speed);
+      queue.enqueue_one_now(buf);
+      //DEBUG_ECHOPAIR(" ", buf);
+    }
+    // while (!enqueue_and_echo_command(buf)) idle();
+    //DEBUG_ECHOLNPGM(" ✓ ");
+    if (!old_relative_mode) {
+      //DEBUG_ECHOPGM("G90");
+      queue.enqueue_now_P(PSTR("G90"));
+      //DEBUG_ECHOPGM(" ✓ ");
+    }
+  }
+
+  ForceCompleteUpdate();
+  DEBUG_ECHOLNPGM("manmv done.");
+  return;
+
+  cannotmove:
+    DEBUG_ECHOLNPAIR(" cannot move ", AS_CHAR(axiscode));
+    return;
+}
+
+#if HAS_PID_HEATING
+  void DGUSScreenHandler::HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t rawvalue = swap16(*(uint16_t*)val_ptr);
+    DEBUG_ECHOLNPAIR("V1:", rawvalue);
+    float value = (float)rawvalue / 10;
+    DEBUG_ECHOLNPAIR("V2:", value);
+    float newvalue = 0;
+
+    switch (var.VP) {
+      default: return;
+        #if HOTENDS >= 1
+          case VP_E0_PID_P: newvalue = value; break;
+          case VP_E0_PID_I: newvalue = scalePID_i(value); break;
+          case VP_E0_PID_D: newvalue = scalePID_d(value); break;
+        #endif
+        #if HOTENDS >= 2
+          case VP_E1_PID_P: newvalue = value; break;
+          case VP_E1_PID_I: newvalue = scalePID_i(value); break;
+          case VP_E1_PID_D: newvalue = scalePID_d(value); break;
+        #endif
+        #if HAS_HEATED_BED
+          case VP_BED_PID_P: newvalue = value; break;
+          case VP_BED_PID_I: newvalue = scalePID_i(value); break;
+          case VP_BED_PID_D: newvalue = scalePID_d(value); break;
+        #endif
+    }
+
+    DEBUG_ECHOLNPAIR_F("V3:", newvalue);
+    *(float *)var.memadr = newvalue;
+
+    skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+  }
+#endif // HAS_PID_HEATING
+
+#if ENABLED(BABYSTEPPING)
+  void DGUSScreenHandler::HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleLiveAdjustZ");
+    int16_t flag  = swap16(*(uint16_t*)val_ptr),
+            steps = flag ? -20 : 20;
+    ExtUI::smartAdjustAxis_steps(steps, ExtUI::axis_t::Z, true);
+    ForceCompleteUpdate();
+  }
+#endif
+
+#if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+
+  void DGUSScreenHandler::HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleFilamentOption");
+
+    uint8_t e_temp = 0;
+    filament_data.heated = false;
+    uint16_t preheat_option = swap16(*(uint16_t*)val_ptr);
+    if (preheat_option <= 8) {      // Load filament type
+      filament_data.action = 1;
+    }
+    else if (preheat_option >= 10) { // Unload filament type
+      preheat_option -= 10;
+      filament_data.action = 2;
+      filament_data.purge_length = DGUS_FILAMENT_PURGE_LENGTH;
+    }
+    else {                          // Cancel filament operation
+      filament_data.action = 0;
+    }
+
+    switch (preheat_option) {
+      case 0: // Load PLA
+        #ifdef PREHEAT_1_TEMP_HOTEND
+          e_temp = PREHEAT_1_TEMP_HOTEND;
+        #endif
+        break;
+      case 1: // Load ABS
+        TERN_(PREHEAT_2_TEMP_HOTEND, e_temp = PREHEAT_2_TEMP_HOTEND);
+        break;
+      case 2: // Load PET
+        #ifdef PREHEAT_3_TEMP_HOTEND
+          e_temp = PREHEAT_3_TEMP_HOTEND;
+        #endif
+        break;
+      case 3: // Load FLEX
+        #ifdef PREHEAT_4_TEMP_HOTEND
+          e_temp = PREHEAT_4_TEMP_HOTEND;
+        #endif
+        break;
+      case 9: // Cool down
+      default:
+        e_temp = 0;
+        break;
+    }
+
+    if (filament_data.action == 0) { // Go back to utility screen
+      #if HOTENDS >= 1
+        thermalManager.setTargetHotend(e_temp, ExtUI::extruder_t::E0);
+      #endif
+      #if HOTENDS >= 2
+        thermalManager.setTargetHotend(e_temp, ExtUI::extruder_t::E1);
+      #endif
+      GotoScreen(DGUSLCD_SCREEN_UTILITY);
+    }
+    else { // Go to the preheat screen to show the heating progress
+      switch (var.VP) {
+        default: return;
+          #if HOTENDS >= 1
+            case VP_E0_FILAMENT_LOAD_UNLOAD:
+              filament_data.extruder = ExtUI::extruder_t::E0;
+              thermalManager.setTargetHotend(e_temp, filament_data.extruder);
+              break;
+          #endif
+          #if HOTENDS >= 2
+            case VP_E1_FILAMENT_LOAD_UNLOAD:
+              filament_data.extruder = ExtUI::extruder_t::E1;
+              thermalManager.setTargetHotend(e_temp, filament_data.extruder);
+              break;
+          #endif
+      }
+      GotoScreen(DGUSLCD_SCREEN_FILAMENT_HEATING);
+    }
+  }
+
+  void DGUSScreenHandler::HandleFilamentLoadUnload(DGUS_VP_Variable &var) {
+    DEBUG_ECHOLNPGM("HandleFilamentLoadUnload");
+    if (filament_data.action <= 0) return;
+
+    // If we close to the target temperature, we can start load or unload the filament
+    if (thermalManager.hotEnoughToExtrude(filament_data.extruder) && \
+        thermalManager.targetHotEnoughToExtrude(filament_data.extruder)) {
+      float movevalue = DGUS_FILAMENT_LOAD_LENGTH_PER_TIME;
+
+      if (filament_data.action == 1) { // load filament
+        if (!filament_data.heated) {
+          //GotoScreen(DGUSLCD_SCREEN_FILAMENT_LOADING);
+          filament_data.heated = true;
+        }
+        movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) + movevalue;
+      }
+      else { // unload filament
+        if (!filament_data.heated) {
+          GotoScreen(DGUSLCD_SCREEN_FILAMENT_UNLOADING);
+          filament_data.heated = true;
+        }
+        // Before unloading extrude to prevent jamming
+        if (filament_data.purge_length >= 0) {
+          movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) + movevalue;
+          filament_data.purge_length -= movevalue;
+        }
+        else {
+          movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) - movevalue;
+        }
+      }
+      ExtUI::setAxisPosition_mm(movevalue, filament_data.extruder);
+    }
+  }
+#endif // DGUS_FILAMENT_LOADUNLOAD
+
+bool DGUSScreenHandler::loop() {
+  dgusdisplay.loop();
+
+  const millis_t ms = millis();
+  static millis_t next_event_ms = 0;
+
+  if (!IsScreenComplete() || ELAPSED(ms, next_event_ms)) {
+    next_event_ms = ms + DGUS_UPDATE_INTERVAL_MS;
+    UpdateScreenVPData();
+  }
+
+  #if ENABLED(SHOW_BOOTSCREEN)
+    static bool booted = false;
+
+    if (!booted && TERN0(POWER_LOSS_RECOVERY, recovery.valid()))
+      booted = true;
+
+    if (!booted && ELAPSED(ms, TERN(USE_MKS_GREEN_UI, 1000, BOOTSCREEN_TIMEOUT)))
+      booted = true;
+  #endif
+  return IsScreenComplete();
+}
+
+#endif // DGUS_LCD_UI_HYPRECY

Marlin/src/lcd/extui/dgus/hiprecy/DGUSScreenHandler.h

@@ -0,0 +1,240 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../DGUSDisplay.h"
+#include "../DGUSVPVariable.h"
+#include "../DGUSDisplayDef.h"
+
+#include "../../../../inc/MarlinConfig.h"
+
+enum DGUSLCD_Screens : uint8_t;
+
+class DGUSScreenHandler {
+public:
+  DGUSScreenHandler() = default;
+
+  static bool loop();
+
+  // Send all 4 strings that are displayed on the infoscreen, confirmation screen and kill screen
+  // The bools specifing whether the strings are in RAM or FLASH.
+  static void sendinfoscreen(const char *line1, const char *line2, const char *line3, const char *line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
+
+  static void HandleUserConfirmationPopUp(uint16_t ConfirmVP, const char *line1, const char *line2, const char *line3, const char *line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
+
+  // "M117" Message -- msg is a RAM ptr.
+  static void setstatusmessage(const char *msg);
+  // The same for messages from Flash
+  static void setstatusmessagePGM(PGM_P const msg);
+  // Callback for VP "Display wants to change screen on idle printer"
+  static void ScreenChangeHookIfIdle(DGUS_VP_Variable &var, void *val_ptr);
+  // Callback for VP "Screen has been changed"
+  static void ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr);
+
+  // Callback for VP "All Heaters Off"
+  static void HandleAllHeatersOff(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for "Change this temperature"
+  static void HandleTemperatureChanged(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for "Change Flowrate"
+  static void HandleFlowRateChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    // Hook for manual move option
+    static void HandleManualMoveOption(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+
+  // Hook for manual move.
+  static void HandleManualMove(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for manual extrude.
+  static void HandleManualExtrude(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for motor lock and unlook
+  static void HandleMotorLockUnlock(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    // Hook for power loss recovery.
+    static void HandlePowerLossRecovery(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for settings
+  static void HandleSettings(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMChanged(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMExtruderChanged(DGUS_VP_Variable &var, void *val_ptr);
+
+  #if HAS_PID_HEATING
+    // Hook for "Change this temperature PID para"
+    static void HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr);
+    // Hook for PID autotune
+    static void HandlePIDAutotune(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if HAS_BED_PROBE
+    // Hook for "Change probe offset z"
+    static void HandleProbeOffsetZChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if ENABLED(BABYSTEPPING)
+    // Hook for live z adjust action
+    static void HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if HAS_FAN
+    // Hook for fan control
+    static void HandleFanControl(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for heater control
+  static void HandleHeaterControl(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(DGUS_PREHEAT_UI)
+    // Hook for preheat
+    static void HandlePreheat(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+    // Hook for filament load and unload filament option
+    static void HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr);
+    // Hook for filament load and unload
+    static void HandleFilamentLoadUnload(DGUS_VP_Variable &var);
+  #endif
+
+  #if ENABLED(SDSUPPORT)
+    // Callback for VP "Display wants to change screen when there is a SD card"
+    static void ScreenChangeHookIfSD(DGUS_VP_Variable &var, void *val_ptr);
+    // Scroll buttons on the file listing screen.
+    static void DGUSLCD_SD_ScrollFilelist(DGUS_VP_Variable &var, void *val_ptr);
+    // File touched.
+    static void DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr);
+    // start print after confirmation received.
+    static void DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr);
+    // User hit the pause, resume or abort button.
+    static void DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr);
+    // User confirmed the abort action
+    static void DGUSLCD_SD_ReallyAbort(DGUS_VP_Variable &var, void *val_ptr);
+    // User hit the tune button
+    static void DGUSLCD_SD_PrintTune(DGUS_VP_Variable &var, void *val_ptr);
+    // Send a single filename to the display.
+    static void DGUSLCD_SD_SendFilename(DGUS_VP_Variable &var);
+    // Marlin informed us that a new SD has been inserted.
+    static void SDCardInserted();
+    // Marlin informed us that the SD Card has been removed().
+    static void SDCardRemoved();
+    // Marlin informed us about a bad SD Card.
+    static void SDCardError();
+  #endif
+
+  // OK Button the Confirm screen.
+  static void ScreenConfirmedOK(DGUS_VP_Variable &var, void *val_ptr);
+
+  // Update data after went to new screen (by display or by GotoScreen)
+  // remember: store the last-displayed screen, so it can get returned to.
+  // (e.g for pop up messages)
+  static void UpdateNewScreen(DGUSLCD_Screens newscreen, bool popup=false);
+
+  // Recall the remembered screen.
+  static void PopToOldScreen();
+
+  // Make the display show the screen and update all VPs in it.
+  static void GotoScreen(DGUSLCD_Screens screen, bool ispopup = false);
+
+  static void UpdateScreenVPData();
+
+  // Helpers to convert and transfer data to the display.
+  static void DGUSLCD_SendWordValueToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplayPGM(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendTemperaturePID(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPercentageToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPrintProgressToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPrintTimeToDisplay(DGUS_VP_Variable &var);
+
+  #if ENABLED(PRINTCOUNTER)
+    static void DGUSLCD_SendPrintAccTimeToDisplay(DGUS_VP_Variable &var);
+    static void DGUSLCD_SendPrintsTotalToDisplay(DGUS_VP_Variable &var);
+  #endif
+  #if HAS_FAN
+    static void DGUSLCD_SendFanStatusToDisplay(DGUS_VP_Variable &var);
+  #endif
+  static void DGUSLCD_SendHeaterStatusToDisplay(DGUS_VP_Variable &var);
+  #if ENABLED(DGUS_UI_WAITING)
+    static void DGUSLCD_SendWaitingStatusToDisplay(DGUS_VP_Variable &var);
+  #endif
+
+  // Send a value from 0..100 to a variable with a range from 0..255
+  static void DGUSLCD_PercentageToUint8(DGUS_VP_Variable &var, void *val_ptr);
+
+  template<typename T>
+  static void DGUSLCD_SetValueDirectly(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!var.memadr) return;
+    union { unsigned char tmp[sizeof(T)]; T t; } x;
+    unsigned char *ptr = (unsigned char*)val_ptr;
+    LOOP_L_N(i, sizeof(T)) x.tmp[i] = ptr[sizeof(T) - i - 1];
+    *(T*)var.memadr = x.t;
+  }
+
+  // Send a float value to the display.
+  // Display will get a 4-byte integer scaled to the number of digits:
+  // Tell the display the number of digits and it cheats by displaying a dot between...
+  template<unsigned int decimals>
+  static void DGUSLCD_SendFloatAsLongValueToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      float f = *(float *)var.memadr;
+      f *= cpow(10, decimals);
+      dgusdisplay.WriteVariable(var.VP, (long)f);
+    }
+  }
+
+  // Send a float value to the display.
+  // Display will get a 2-byte integer scaled to the number of digits:
+  // Tell the display the number of digits and it cheats by displaying a dot between...
+  template<unsigned int decimals>
+  static void DGUSLCD_SendFloatAsIntValueToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      float f = *(float *)var.memadr;
+      DEBUG_ECHOLNPAIR_F(" >> ", f, 6);
+      f *= cpow(10, decimals);
+      dgusdisplay.WriteVariable(var.VP, (int16_t)f);
+    }
+  }
+
+  // Force an update of all VP on the current screen.
+  static inline void ForceCompleteUpdate() { update_ptr = 0; ScreenComplete = false; }
+  // Has all VPs sent to the screen
+  static inline bool IsScreenComplete() { return ScreenComplete; }
+
+  static inline DGUSLCD_Screens getCurrentScreen() { return current_screen; }
+
+  static inline void SetupConfirmAction( void (*f)()) { confirm_action_cb = f; }
+
+private:
+  static DGUSLCD_Screens current_screen;  //< currently on screen
+  static constexpr uint8_t NUM_PAST_SCREENS = 4;
+  static DGUSLCD_Screens past_screens[NUM_PAST_SCREENS]; //< LIFO with past screens for the "back" button.
+
+  static uint8_t update_ptr;      //< Last sent entry in the VPList for the actual screen.
+  static uint16_t skipVP;         //< When updating the screen data, skip this one, because the user is interacting with it.
+  static bool ScreenComplete;     //< All VPs sent to screen?
+
+  static uint16_t ConfirmVP;      //< context for confirm screen (VP that will be emulated-sent on "OK").
+
+  #if ENABLED(SDSUPPORT)
+    static int16_t top_file;      //< file on top of file chooser
+    static int16_t file_to_print; //< touched file to be confirmed
+  #endif
+
+  static void (*confirm_action_cb)();
+};
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+  #define PLR_SCREEN_RECOVER DGUSLCD_SCREEN_SDPRINTMANIPULATION
+  #define PLR_SCREEN_CANCEL DGUSLCD_SCREEN_STATUS
+#endif

Marlin/src/lcd/extui/dgus/mks/DGUSDisplayDef.cpp

@@ -0,0 +1,797 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../../../inc/MarlinConfigPre.h"
+
+#if ENABLED(DGUS_LCD_UI_MKS)
+
+#include "DGUSDisplayDef.h"
+#include "../DGUSDisplay.h"
+#include "../DGUSScreenHandler.h"
+
+#include "../../../../module/temperature.h"
+#include "../../../../module/motion.h"
+#include "../../../../module/planner.h"
+
+#include "../../ui_api.h"
+#include "../../../marlinui.h"
+
+#if ENABLED(HAS_STEALTHCHOP)
+  #include "../../../../module/stepper/trinamic.h"
+#endif
+
+#if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+  uint16_t distanceToMove = 10;
+#endif
+
+uint16_t manualMoveStep = 1;
+uint16_t distanceFilament = 10;
+uint16_t filamentSpeed_mm_s = 25;
+float ZOffset_distance = 0.1;
+float mesh_adj_distance = 0.01;
+float Z_distance = 0.1;
+
+//struct { uint16_t h, m, s; } dgus_time;
+
+//
+// Persistent settings
+//
+xy_int_t mks_corner_offsets[5];   // Initialized by settings.load()
+xyz_int_t mks_park_pos;           // Initialized by settings.load()
+celsius_t mks_min_extrusion_temp; // Initialized by settings.load()
+
+void MKS_reset_settings() {
+  constexpr xy_int_t init_dgus_level_offsets[5] = {
+    { 20, 20 }, { 20, 20 },
+    { 20, 20 }, { 20, 20 },
+    { X_CENTER, Y_CENTER }
+  };
+  mks_language_index = 0;
+  COPY(mks_corner_offsets, init_dgus_level_offsets);
+  mks_park_pos.set(20, 20, 10);
+  mks_min_extrusion_temp = 0;
+}
+
+xyz_pos_t position_before_pause;
+constexpr feedRate_t park_speed_xy = TERN(NOZZLE_PARK_FEATURE, NOZZLE_PARK_XY_FEEDRATE, 100),
+                     park_speed_z  = TERN(NOZZLE_PARK_FEATURE, NOZZLE_PARK_Z_FEEDRATE,    5);
+
+void MKS_pause_print_move() {
+  queue.exhaust();
+  position_before_pause = current_position;
+  destination.z = _MIN(current_position.z + mks_park_pos.z, Z_MAX_POS);
+  prepare_internal_move_to_destination(park_speed_z);
+  destination.set(X_MIN_POS + mks_park_pos.x, Y_MIN_POS + mks_park_pos.y);
+  prepare_internal_move_to_destination(park_speed_xy);
+}
+
+void MKS_resume_print_move() {
+  destination.set(position_before_pause.x, position_before_pause.y);
+  prepare_internal_move_to_destination(park_speed_xy);
+  destination.z = position_before_pause.z;
+  prepare_internal_move_to_destination(park_speed_z);
+}
+
+float z_offset_add = 0;
+
+xyz_int_t tmc_step; // = { 0, 0, 0 }
+
+uint16_t lcd_default_light = 50;
+
+EX_FILAMENT_DEF ex_filament;
+RUNOUT_MKS_DEF runout_mks;
+NOZZLE_PARK_DEF nozzle_park_mks;
+
+const uint16_t VPList_Boot[] PROGMEM = {
+  VP_MARLIN_VERSION,
+  0x0000
+};
+
+#define MKSLIST_E_ITEM(N) VP_T_E##N##_Is, VP_T_E##N##_Set,
+
+const uint16_t VPList_Main[] PROGMEM = {
+  // VP_M117, for completeness, but it cannot be auto-uploaded.
+  #if HOTENDS >= 1
+    MKSLIST_E_ITEM(0) VP_E0_STATUS,
+  #endif
+  #if HOTENDS >= 2
+    MKSLIST_E_ITEM(1)
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set, VP_BED_STATUS,
+  #endif
+  #if HAS_FAN
+    VP_Fan0_Percentage, VP_FAN0_STATUS,
+  #endif
+  VP_XPos, VP_YPos, VP_ZPos,
+  VP_Fan0_Percentage,
+  VP_Feedrate_Percentage,
+  #if ENABLED(LCD_SET_PROGRESS_MANUALLY)
+    VP_PrintProgress_Percentage,
+  #endif
+  0x0000
+};
+
+const uint16_t MKSList_Home[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+  // Language
+  // VP_HOME_Dis,
+
+  0x0000
+};
+
+const uint16_t MKSList_Setting[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+  // Language
+  VP_Setting_Dis,
+  0x0000
+};
+
+const uint16_t MKSList_Tool[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+  // Language
+  VP_Tool_Dis,
+  // LCD BLK
+  VP_LCD_BLK,
+  0x0000
+};
+
+const uint16_t MKSList_EXTRUE[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+
+  VP_Filament_distance,
+  VP_Filament_speed,
+
+  0x0000
+};
+
+const uint16_t MKSList_LEVEL[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+
+  0x0000
+};
+
+const uint16_t MKSList_MOVE[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+
+  0x0000
+};
+
+const uint16_t MKSList_Print[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+  // Print Percent
+  VP_PrintProgress_Percentage,
+
+  VP_PrintTime,
+
+  VP_Flowrate_E0,
+  VP_Flowrate_E1,
+  VP_Feedrate_Percentage,
+
+  VP_PrintTime_H,
+  VP_PrintTime_M,
+  VP_PrintTime_S,
+
+  VP_XPos,
+  VP_YPos,
+  VP_ZPos,
+
+  0x0000
+};
+
+const uint16_t MKSList_SD_File[] PROGMEM = {
+  VP_SD_FileName0, VP_SD_FileName1,
+  VP_SD_FileName2, VP_SD_FileName3,
+  VP_SD_FileName4, VP_SD_FileName5,
+  VP_SD_FileName6, VP_SD_FileName7,
+  VP_SD_FileName8, VP_SD_FileName9,
+
+  0x0000
+};
+
+const uint16_t MKSList_TempOnly[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+  // LCD BLK
+  VP_LCD_BLK,
+  0x0000
+};
+
+const uint16_t MKSList_Pluse[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+
+  // Pluse
+  VP_X_STEP_PER_MM,
+  VP_Y_STEP_PER_MM,
+  VP_Z_STEP_PER_MM,
+  VP_E0_STEP_PER_MM,
+  VP_E1_STEP_PER_MM,
+
+  0x0000
+};
+
+const uint16_t MKSList_MaxSpeed[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+
+  // Pluse
+  VP_X_MAX_SPEED,
+  VP_Y_MAX_SPEED,
+  VP_Z_MAX_SPEED,
+  VP_E0_MAX_SPEED,
+  VP_E1_MAX_SPEED,
+
+  0x0000
+};
+
+const uint16_t MKSList_MaxAcc[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+
+  // ACC
+  VP_ACC_SPEED,
+  VP_X_ACC_MAX_SPEED,
+  VP_Y_ACC_MAX_SPEED,
+  VP_Z_ACC_MAX_SPEED,
+  VP_E0_ACC_MAX_SPEED,
+  VP_E1_ACC_MAX_SPEED,
+
+  0x0000
+};
+
+const uint16_t MKSList_PID[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+
+  // PID
+  VP_E0_PID_P,
+  VP_E0_PID_I,
+  VP_E0_PID_D,
+
+  0x0000
+};
+
+const uint16_t MKSList_Level_Point[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  // FAN
+  VP_Fan0_Percentage,
+
+  // Level Point
+  VP_Level_Point_One_X,
+  VP_Level_Point_One_Y,
+  VP_Level_Point_Two_X,
+  VP_Level_Point_Two_Y,
+  VP_Level_Point_Three_X,
+  VP_Level_Point_Three_Y,
+  VP_Level_Point_Four_X,
+  VP_Level_Point_Four_Y,
+  VP_Level_Point_Five_X,
+  VP_Level_Point_Five_Y,
+
+  0x0000
+};
+
+const uint16_t MKSList_Level_PrintConfig[] PROGMEM = {
+  VP_T_E0_Set,
+  VP_T_E1_Set,
+  VP_T_Bed_Set,
+  VP_Flowrate_E0,
+  VP_Flowrate_E1,
+  VP_Fan0_Percentage,
+  VP_Feedrate_Percentage,
+
+  0x0000
+};
+
+const uint16_t MKSList_PrintPauseConfig[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+
+  VP_X_PARK_POS,
+  VP_Y_PARK_POS,
+  VP_Z_PARK_POS,
+
+  0x0000
+};
+
+const uint16_t MKSList_MotoConfig[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+
+  VP_TRAVEL_SPEED,
+  VP_FEEDRATE_MIN_SPEED,
+  VP_T_F_SPEED,
+
+  0x0000
+};
+
+const uint16_t MKSList_EX_Config[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  VP_MIN_EX_T,VP_Min_EX_T_E,
+  0x0000
+};
+
+const uint16_t MKSTMC_Config[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  // HB Temp
+  VP_T_Bed_Is, VP_T_Bed_Set,
+  VP_MIN_EX_T,
+
+  VP_TMC_X_STEP,
+  VP_TMC_Y_STEP,
+  VP_TMC_Z_STEP,
+  VP_TMC_X1_Current,
+  VP_TMC_Y1_Current,
+  VP_TMC_X_Current,
+  VP_TMC_Y_Current,
+  VP_TMC_Z_Current,
+  VP_TMC_E0_Current,
+  VP_TMC_E1_Current,
+  VP_TMC_Z1_Current,
+
+  0x0000
+};
+
+const uint16_t MKSAuto_Level[] PROGMEM = {
+  VP_MESH_LEVEL_POINT_DIS,
+  VP_ZPos,
+  0x0000
+};
+
+const uint16_t MKSOffset_Config[] PROGMEM = {
+  // E Temp
+  REPEAT(EXTRUDERS, MKSLIST_E_ITEM)
+  VP_OFFSET_X,
+  VP_OFFSET_Y,
+  VP_OFFSET_Z,
+  0x0000
+};
+
+const uint16_t MKSBabyStep[] PROGMEM = {
+  VP_ZOffset_DE_DIS,
+  0x0000
+};
+
+const uint16_t MKSList_About[] PROGMEM = {
+  // Marlin version
+  VP_MARLIN_VERSION,
+  // H43 Version
+  VP_MKS_H43_VERSION,
+  VP_MKS_H43_UpdataVERSION,
+  0x0000
+};
+
+// Page data updata
+const struct VPMapping VPMap[] PROGMEM = {
+  { MKSLCD_SCREEN_BOOT, VPList_Boot },                        // Boot Page to show logo  0
+  { MKSLCD_SCREEN_HOME, MKSList_Home },                       // Home, Page 1
+  { MKSLCD_SCREEN_SETTING, MKSList_Setting },                 // Setting, Page 2
+  { MKSLCD_SCREEM_TOOL, MKSList_Tool },                       // Page 3
+  { MKSLCD_SCREEN_EXTRUDE_P1, MKSList_EXTRUE },               // Page 4
+  { MKSLCD_SCREEN_EXTRUDE_P2, MKSList_EXTRUE },               // Page 11
+  { MKSLCD_PAUSE_SETTING_EX, MKSList_EXTRUE },                // Page 57
+  { MKSLCD_PAUSE_SETTING_EX2, MKSList_EXTRUE },               // Page 61
+  { MKSLCD_SCREEN_LEVEL, MKSList_LEVEL },                     // Page 5
+  { MKSLCD_SCREEN_MOVE, MKSList_MOVE },                       // Page 6
+  { MKSLCD_SCREEN_PRINT, MKSList_Print },                     // Page 7
+  { MKSLCD_SCREEN_PAUSE, MKSList_Print },                     // Page 26
+  { MKSLCD_SCREEN_CHOOSE_FILE, MKSList_SD_File },             // Page 15
+  { MKSLCD_SCREEN_MOTOR_PLUSE, MKSList_Pluse },               // Page 51
+  { MKSLCD_SCREEN_MOTOR_SPEED, MKSList_MaxSpeed },            // Page 55
+  { MKSLCD_SCREEN_MOTOR_ACC_MAX, MKSList_MaxAcc },            // Page 53
+  { MKSLCD_SCREEN_LEVEL_DATA, MKSList_Level_Point },          // Page 48
+  { MKSLCD_PrintPause_SET, MKSList_PrintPauseConfig },        // Page 49
+  { MKSLCD_FILAMENT_DATA, MKSList_SD_File },                  // Page 50
+  { MKSLCD_SCREEN_Config, MKSList_TempOnly },                 // Page 46
+  { MKSLCD_SCREEN_Config_MOTOR, MKSList_MotoConfig },         // Page 47
+  { MKSLCD_PID, MKSList_PID },                                // Page 56
+  { MKSLCD_ABOUT, MKSList_About },                            // Page 36
+  { MKSLCD_SCREEN_PRINT_CONFIG, MKSList_Level_PrintConfig },  // Page 60
+  { MKSLCD_SCREEN_EX_CONFIG, MKSList_EX_Config },             // Page 65
+  { MKSLCD_SCREEN_TMC_Config, MKSTMC_Config },                // Page 70
+  { MKSLCD_AUTO_LEVEL, MKSAuto_Level },                       // Page 73
+  { MKSLCD_Screen_Offset_Config, MKSOffset_Config },          // Page 30
+  { MKSLCD_Screen_PMove, MKSList_MOVE },                      // Page 64
+  { MKSLCD_Screen_Baby, MKSBabyStep },                        // Page 71
+  //{ MKSLCD_SCREEN_LEVEL_DATA, MKSList_SD_File},
+  //{ MKSLCD_SCREEN_HOME, VPList_Boot },
+  { 0, nullptr } // List is terminated with an nullptr as table entry.
+};
+
+const char MarlinVersion[] PROGMEM = SHORT_BUILD_VERSION;
+const char H43Version[] PROGMEM = "MKS H43_V1.30";
+const char Updata_Time[] PROGMEM = STRING_DISTRIBUTION_DATE;
+
+// Helper to define a DGUS_VP_Variable for common use cases.
+#define VPHELPER(VPADR, VPADRVAR, RXFPTR, TXFPTR)                       \
+  {                                                                     \
+    .VP = VPADR, .memadr = VPADRVAR, .size = sizeof(VPADRVAR),          \
+    .set_by_display_handler = RXFPTR, .send_to_display_handler = TXFPTR \
+  }
+
+// Helper to define a DGUS_VP_Variable when the sizeo of the var cannot be determined automaticalyl (eg. a string)
+#define VPHELPER_STR(VPADR, VPADRVAR, STRLEN, RXFPTR, TXFPTR)           \
+  {                                                                     \
+    .VP = VPADR, .memadr = VPADRVAR, .size = STRLEN,                    \
+    .set_by_display_handler = RXFPTR, .send_to_display_handler = TXFPTR \
+  }
+
+const struct DGUS_VP_Variable ListOfVP[] PROGMEM = {
+  // Helper to detect touch events
+  VPHELPER(VP_SCREENCHANGE, nullptr, ScreenHandler.ScreenChangeHook, nullptr),
+  VPHELPER(VP_SCREENCHANGE_ASK, nullptr, ScreenHandler.ScreenChangeHookIfIdle, nullptr),
+  #if ENABLED(SDSUPPORT)
+    VPHELPER(VP_SCREENCHANGE_WHENSD, nullptr, ScreenHandler.ScreenChangeHookIfSD, nullptr),
+  #endif
+  VPHELPER(VP_CONFIRMED, nullptr, ScreenHandler.ScreenConfirmedOK, nullptr),
+
+  // Back Button
+  VPHELPER(VP_BACK_PAGE, nullptr, &ScreenHandler.ScreenBackChange, nullptr),
+  VPHELPER(VP_TEMP_ALL_OFF, nullptr, &ScreenHandler.HandleAllHeatersOff, nullptr),
+
+  VPHELPER(VP_MOVE_X, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+  VPHELPER(VP_MOVE_Y, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+  VPHELPER(VP_MOVE_Z, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+  VPHELPER(VP_HOME_ALL, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+
+  VPHELPER(VP_X_HOME, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+  VPHELPER(VP_Y_HOME, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+  VPHELPER(VP_Z_HOME, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+
+  VPHELPER(VP_MOVE_DISTANCE, &manualMoveStep, &ScreenHandler.GetManualMovestep, nullptr),
+
+  VPHELPER(VP_MOTOR_LOCK_UNLOK, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+  VPHELPER(VP_LEVEL_POINT, nullptr, &ScreenHandler.ManualAssistLeveling, nullptr),
+
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    VPHELPER(VP_POWER_LOSS_RECOVERY, nullptr, &ScreenHandler.HandlePowerLossRecovery, nullptr),
+  #endif
+  VPHELPER(VP_SETTINGS, nullptr, &ScreenHandler.HandleSettings, nullptr),
+  #if ENABLED(SINGLE_Z_CALIBRATION)
+    VPHELPER(VP_Z_CALIBRATE, nullptr, &ScreenHandler.HandleZCalibration, nullptr),
+  #endif
+  #if ENABLED(FIRST_LAYER_CAL)
+    VPHELPER(VP_Z_FIRST_LAYER_CAL, nullptr, &ScreenHandler.HandleFirstLayerCal, nullptr),
+  #endif
+  {.VP = VP_MARLIN_VERSION, .memadr = (void *)MarlinVersion, .size = VP_MARLIN_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM},
+  // M117 LCD String (We don't need the string in memory but "just" push it to the display on demand, hence the nullptr
+  {.VP = VP_M117, .memadr = nullptr, .size = VP_M117_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplay},
+  {.VP = VP_MKS_H43_VERSION, .memadr = (void *)H43Version, .size = VP_MKS_H43_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM},
+  {.VP = VP_MKS_H43_UpdataVERSION, .memadr = (void *)Updata_Time, .size = VP_MKS_H43_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM},
+
+  // Temperature Data
+  #if HOTENDS >= 1
+    VPHELPER(VP_T_E0_Is, &thermalManager.temp_hotend[0].celsius, nullptr, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_E0_Set, &thermalManager.temp_hotend[0].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E0, &planner.flow_percentage[ExtUI::extruder_t::E0], ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_EPos, &destination.e, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+    VPHELPER(VP_MOVE_E0, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E0_CONTROL, &thermalManager.temp_hotend[0].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E0_STATUS, &thermalManager.temp_hotend[0].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+    #if ENABLED(DGUS_PREHEAT_UI)
+      VPHELPER(VP_E0_BED_PREHEAT, nullptr, &ScreenHandler.HandlePreheat, nullptr),
+    #endif
+    #if ENABLED(PIDTEMP)
+      VPHELPER(VP_E0_PID_P, &thermalManager.temp_hotend[0].pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_I, &thermalManager.temp_hotend[0].pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_D, &thermalManager.temp_hotend[0].pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_E0, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
+    #endif
+    #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+      VPHELPER(VP_LOAD_Filament, nullptr, &ScreenHandler.MKS_FilamentLoad, nullptr),
+      VPHELPER(VP_UNLOAD_Filament, nullptr, &ScreenHandler.MKS_FilamentUnLoad, nullptr),
+      VPHELPER(VP_Filament_distance, &distanceFilament, &ScreenHandler.GetManualFilament, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+      VPHELPER(VP_Filament_speed, &filamentSpeed_mm_s, &ScreenHandler.GetManualFilamentSpeed, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    #endif
+  #endif
+
+  #if HOTENDS >= 2
+    VPHELPER(VP_T_E1_Is, &thermalManager.temp_hotend[1].celsius, nullptr, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_E1_Set, &thermalManager.temp_hotend[1].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E1, &planner.flow_percentage[ExtUI::extruder_t::E1], ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_MOVE_E1, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E1_CONTROL, &thermalManager.temp_hotend[1].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E1_STATUS, &thermalManager.temp_hotend[1].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+
+    #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+      VPHELPER(VP_Filament_distance, &distanceFilament, &ScreenHandler.GetManualFilament, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+      VPHELPER(VP_Filament_speed, &filamentSpeed_mm_s, &ScreenHandler.GetManualFilamentSpeed, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    #endif
+
+    #if ENABLED(PIDTEMP)
+      VPHELPER(VP_PID_AUTOTUNE_E1, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
+    #endif
+
+    VPHELPER(VP_E1_FILAMENT_LOAD_UNLOAD, nullptr, &ScreenHandler.HandleFilamentOption, &ScreenHandler.HandleFilamentLoadUnload),
+  #endif
+
+  #if HAS_HEATED_BED
+    VPHELPER(VP_T_Bed_Is, &thermalManager.temp_bed.celsius, nullptr, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_Bed_Set, &thermalManager.temp_bed.target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_BED_CONTROL, &thermalManager.temp_bed.target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_BED_STATUS, &thermalManager.temp_bed.target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+    #if ENABLED(PIDTEMPBED)
+      VPHELPER(VP_BED_PID_P, &thermalManager.temp_bed.pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_I, &thermalManager.temp_bed.pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_D, &thermalManager.temp_bed.pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_BED, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
+    #endif
+  #endif
+
+  // Fan Data
+  #if HAS_FAN
+    #define FAN_VPHELPER(N)                                                                                                                    \
+      VPHELPER(VP_Fan##N##_Percentage, &thermalManager.fan_speed[N], ScreenHandler.DGUSLCD_SetUint8, &ScreenHandler.DGUSLCD_SendFanToDisplay), \
+      VPHELPER(VP_FAN##N##_CONTROL, &thermalManager.fan_speed[N], &ScreenHandler.HandleFanControl, nullptr),                               \
+      VPHELPER(VP_FAN##N##_STATUS, &thermalManager.fan_speed[N], nullptr, &ScreenHandler.DGUSLCD_SendFanStatusToDisplay),
+    REPEAT(FAN_COUNT, FAN_VPHELPER)
+  #endif
+
+  // Feedrate
+  VPHELPER(VP_Feedrate_Percentage, &feedrate_percentage, ScreenHandler.DGUSLCD_SetValueDirectly<int16_t>, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+
+  // Position Data
+  VPHELPER(VP_XPos, &current_position.x, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_YPos, &current_position.y, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_ZPos, &current_position.z, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+
+  // Level Point Set
+  VPHELPER(VP_Level_Point_One_X, &mks_corner_offsets[0].x, ScreenHandler.HandleChangeLevelPoint_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Level_Point_One_Y, &mks_corner_offsets[0].y, ScreenHandler.HandleChangeLevelPoint_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Level_Point_Two_X, &mks_corner_offsets[1].x, ScreenHandler.HandleChangeLevelPoint_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Level_Point_Two_Y, &mks_corner_offsets[1].y, ScreenHandler.HandleChangeLevelPoint_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Level_Point_Three_X, &mks_corner_offsets[2].x, ScreenHandler.HandleChangeLevelPoint_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Level_Point_Three_Y, &mks_corner_offsets[2].y, ScreenHandler.HandleChangeLevelPoint_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Level_Point_Four_X, &mks_corner_offsets[3].x, ScreenHandler.HandleChangeLevelPoint_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Level_Point_Four_Y, &mks_corner_offsets[3].y, ScreenHandler.HandleChangeLevelPoint_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Level_Point_Five_X, &mks_corner_offsets[4].x, ScreenHandler.HandleChangeLevelPoint_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Level_Point_Five_Y, &mks_corner_offsets[4].y, ScreenHandler.HandleChangeLevelPoint_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+
+  // Print Progress
+  VPHELPER(VP_PrintProgress_Percentage, nullptr, nullptr, ScreenHandler.DGUSLCD_SendPrintProgressToDisplay),
+
+  //LCD Control
+  VPHELPER(VP_LCD_BLK, &lcd_default_light, &ScreenHandler.LCD_BLK_Adjust, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+
+  // Print Time
+  VPHELPER_STR(VP_PrintTime, nullptr, VP_PrintTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintTimeToDisplay_MKS),
+
+  #if ENABLED(PRINTCOUNTER)
+    VPHELPER_STR(VP_PrintAccTime, nullptr, VP_PrintAccTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintAccTimeToDisplay),
+    VPHELPER_STR(VP_PrintsTotal, nullptr, VP_PrintsTotal_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintsTotalToDisplay),
+  #endif
+
+  VPHELPER(VP_X_STEP_PER_MM, &planner.settings.axis_steps_per_mm[X_AXIS], ScreenHandler.HandleStepPerMMChanged_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  VPHELPER(VP_Y_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Y_AXIS], ScreenHandler.HandleStepPerMMChanged_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  VPHELPER(VP_Z_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Z_AXIS], ScreenHandler.HandleStepPerMMChanged_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+
+  VPHELPER(VP_X_MAX_SPEED, &planner.settings.max_feedrate_mm_s[X_AXIS], ScreenHandler.HandleMaxSpeedChange_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  VPHELPER(VP_Y_MAX_SPEED, &planner.settings.max_feedrate_mm_s[Y_AXIS], ScreenHandler.HandleMaxSpeedChange_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  VPHELPER(VP_Z_MAX_SPEED, &planner.settings.max_feedrate_mm_s[Z_AXIS], ScreenHandler.HandleMaxSpeedChange_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+
+  #if HOTENDS >= 1
+    VPHELPER(VP_E0_MAX_SPEED, &planner.settings.max_feedrate_mm_s[E0_AXIS], ScreenHandler.HandleExtruderMaxSpeedChange_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  #endif
+  #if HOTENDS >= 2
+    VPHELPER(VP_E1_MAX_SPEED, &planner.settings.max_feedrate_mm_s[E1_AXIS], ScreenHandler.HandleExtruderMaxSpeedChange_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  #endif
+
+  VPHELPER(VP_X_ACC_MAX_SPEED, (uint16_t *)&planner.settings.max_acceleration_mm_per_s2[X_AXIS], ScreenHandler.HandleMaxAccChange_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Y_ACC_MAX_SPEED, (uint16_t *)&planner.settings.max_acceleration_mm_per_s2[Y_AXIS], ScreenHandler.HandleMaxAccChange_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Z_ACC_MAX_SPEED, (uint16_t *)&planner.settings.max_acceleration_mm_per_s2[Z_AXIS], ScreenHandler.HandleMaxAccChange_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+
+  #if HOTENDS >= 1
+    VPHELPER(VP_E0_ACC_MAX_SPEED, (uint16_t *)&planner.settings.max_acceleration_mm_per_s2[E0_AXIS], ScreenHandler.HandleExtruderAccChange_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  #endif
+  #if HOTENDS >= 2
+    VPHELPER(VP_E1_ACC_MAX_SPEED, (uint16_t *)&planner.settings.max_acceleration_mm_per_s2[E1_AXIS], ScreenHandler.HandleExtruderAccChange_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  #endif
+
+  VPHELPER(VP_TRAVEL_SPEED, (uint16_t *)&planner.settings.travel_acceleration, ScreenHandler.HandleTravelAccChange_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  VPHELPER(VP_FEEDRATE_MIN_SPEED, (uint16_t *)&planner.settings.min_feedrate_mm_s, ScreenHandler.HandleFeedRateMinChange_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  VPHELPER(VP_T_F_SPEED, (uint16_t *)&planner.settings.min_travel_feedrate_mm_s, ScreenHandler.HandleMin_T_F_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  VPHELPER(VP_ACC_SPEED, (uint16_t *)&planner.settings.acceleration, ScreenHandler.HandleAccChange_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+
+  VPHELPER(VP_X_PARK_POS, &mks_park_pos.x, ScreenHandler.GetParkPos_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Y_PARK_POS, &mks_park_pos.y, ScreenHandler.GetParkPos_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_Z_PARK_POS, &mks_park_pos.z, ScreenHandler.GetParkPos_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_MIN_EX_T, &thermalManager.extrude_min_temp, ScreenHandler.HandleGetExMinTemp_MKS, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+
+  #if ENABLED(SENSORLESS_HOMING)  // TMC SENSORLESS Setting
+    #if AXIS_HAS_STEALTHCHOP(X)
+      VPHELPER(VP_TMC_X_STEP, &tmc_step.x, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendTMCStepValue),
+    #endif
+    #if AXIS_HAS_STEALTHCHOP(Y)
+      VPHELPER(VP_TMC_Y_STEP, &tmc_step.y, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendTMCStepValue),
+    #endif
+    #if AXIS_HAS_STEALTHCHOP(Z)
+      VPHELPER(VP_TMC_Z_STEP, &tmc_step.z, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendTMCStepValue),
+    #endif
+  #endif
+
+  #if HAS_TRINAMIC_CONFIG   // TMC Current Setting
+    #if AXIS_IS_TMC(X)
+      VPHELPER(VP_TMC_X_Current, &stepperX.val_mA, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    #endif
+    #if AXIS_IS_TMC(Y)
+      VPHELPER(VP_TMC_Y_Current, &stepperY.val_mA, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    #endif
+    #if AXIS_IS_TMC(Z)
+      VPHELPER(VP_TMC_Z_Current, &stepperZ.val_mA, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    #endif
+    #if AXIS_IS_TMC(E0)
+      VPHELPER(VP_TMC_E0_Current, &stepperE0.val_mA, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    #endif
+    #if AXIS_IS_TMC(E1)
+      VPHELPER(VP_TMC_E1_Current, &stepperE1.val_mA, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    #endif
+    #if AXIS_IS_TMC(X2)
+      VPHELPER(VP_TMC_X1_Current, &stepperX2.val_mA, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    #endif
+    #if AXIS_IS_TMC(Y2)
+      VPHELPER(VP_TMC_Y1_Current, &stepperY2.val_mA, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    #endif
+    #if AXIS_IS_TMC(Z2)
+      VPHELPER(VP_TMC_Z1_Current, &stepperZ2.val_mA, ScreenHandler.TMC_ChangeConfig, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    #endif
+  #endif
+
+  VPHELPER(VP_EEPROM_CTRL, nullptr, ScreenHandler.EEPROM_CTRL, nullptr),
+  VPHELPER(VP_LEVEL_BUTTON, nullptr, ScreenHandler.Level_Ctrl_MKS, nullptr),
+  VPHELPER(VP_LANGUAGE_CHANGE, nullptr, ScreenHandler.LanguageChange_MKS, nullptr),
+
+  //VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, ScreenHandler.HandleLiveAdjustZ, nullptr),
+
+  VPHELPER(VP_SD_Print_LiveAdjustZ_Confirm, nullptr, ScreenHandler.ZoffsetConfirm, nullptr),
+
+  VPHELPER(VP_ZOffset_Distance,nullptr ,ScreenHandler.GetZoffsetDistance, nullptr),
+  VPHELPER(VP_MESH_LEVEL_ADJUST, nullptr, ScreenHandler.MeshLevelDistanceConfig, nullptr),
+  VPHELPER(VP_MESH_LEVEL_POINT,nullptr, ScreenHandler.MeshLevel,nullptr),
+  VPHELPER(VP_Min_EX_T_E, &thermalManager.extrude_min_temp, &ScreenHandler.GetMinExtrudeTemp, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+  VPHELPER(VP_AutoTurnOffSw, nullptr, &ScreenHandler.GetTurnOffCtrl, nullptr),
+
+  #if HOTENDS >= 1
+    VPHELPER(VP_E0_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(0)], ScreenHandler.HandleStepPerMMExtruderChanged_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  #endif
+  #if HOTENDS >= 2
+    VPHELPER(VP_E1_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(1)], ScreenHandler.HandleStepPerMMExtruderChanged_MKS, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<0>),
+  #endif
+
+
+  // SDCard File listing
+
+  #if ENABLED(SDSUPPORT)
+    VPHELPER(VP_SD_FileSelected, nullptr, ScreenHandler.DGUSLCD_SD_FileSelected, nullptr),
+    VPHELPER(VP_SD_ScrollEvent, nullptr, ScreenHandler.DGUSLCD_SD_ScrollFilelist, nullptr),
+    VPHELPER(VP_SD_FileSelectConfirm, nullptr, ScreenHandler.DGUSLCD_SD_StartPrint, nullptr),
+    VPHELPER_STR(VP_SD_FileName0, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName1, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName2, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName3, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName4, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName5, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName6, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName7, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName8, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER_STR(VP_SD_FileName9, nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename),
+    VPHELPER(VP_SD_ResumePauseAbort, nullptr, ScreenHandler.DGUSLCD_SD_ResumePauseAbort, nullptr),
+    VPHELPER(VP_SD_AbortPrintConfirmed, nullptr, ScreenHandler.DGUSLCD_SD_ReallyAbort, nullptr),
+    VPHELPER(VP_SD_Print_Setting, nullptr, ScreenHandler.DGUSLCD_SD_PrintTune, nullptr),
+    #if ENABLED(BABYSTEPPING)
+      VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, ScreenHandler.HandleLiveAdjustZ, &ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<2>),
+      VPHELPER(VP_ZOffset_DE_DIS, &z_offset_add, nullptr, &ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+    #endif
+    #if HAS_BED_PROBE
+      VPHELPER(VP_OFFSET_X, &probe.offset.x, ScreenHandler.GetOffsetValue,ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+      VPHELPER(VP_OFFSET_Y, &probe.offset.y, ScreenHandler.GetOffsetValue,ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+      VPHELPER(VP_OFFSET_Z, &probe.offset.z, ScreenHandler.GetOffsetValue,ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+    #endif
+  #else
+    VPHELPER(VP_SD_FileSelected, nullptr, ScreenHandler.PrintReturn, nullptr),
+  #endif
+
+  #if ENABLED(DGUS_UI_WAITING)
+    VPHELPER(VP_WAITING_STATUS, nullptr, nullptr, ScreenHandler.DGUSLCD_SendWaitingStatusToDisplay),
+  #endif
+
+  // Messages for the User, shared by the popup and the kill screen. They cant be autouploaded as we do not buffer content.
+  //{.VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM},
+  //{.VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM},
+  //{.VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM},
+  //{.VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM},
+
+  {.VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplay_Language_MKS},
+  {.VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplay_Language_MKS},
+  {.VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplay_Language_MKS},
+  {.VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplay_Language_MKS},
+
+  VPHELPER(0, 0, 0, 0) // must be last entry.
+};
+
+#endif // DGUS_LCD_UI_MKS

Marlin/src/lcd/extui/dgus/mks/DGUSDisplayDef.h

@@ -0,0 +1,891 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../DGUSDisplayDef.h"
+
+//#define DGUS_MKS_RUNOUT_SENSOR
+
+#define LOGO_TIME_DELAY TERN(USE_MKS_GREEN_UI, 8000, 1500)
+
+#if ENABLED(DGUS_MKS_RUNOUT_SENSOR)
+  #define MT_DET_1_PIN         1
+  #define MT_DET_2_PIN         2
+  #define MT_DET_PIN_INVERTING false
+#endif
+
+#define MKS_FINSH
+
+extern uint16_t manualMoveStep;
+extern uint16_t distanceFilament;
+extern uint16_t filamentSpeed_mm_s;
+extern float    ZOffset_distance;
+extern float    mesh_adj_distance;
+extern float    Z_distance;
+
+//extern struct { uint16_t h, m, s; } dgus_time;
+
+extern xy_int_t mks_corner_offsets[5];
+extern xyz_int_t mks_park_pos;
+extern celsius_t mks_min_extrusion_temp;
+
+void MKS_reset_settings(); // Restore persistent settings to defaults
+
+void MKS_pause_print_move();
+void MKS_resume_print_move();
+
+extern float z_offset_add;
+
+extern xyz_int_t tmc_step;
+
+extern uint16_t lcd_default_light;
+
+#if AXIS_HAS_STEALTHCHOP(X)
+  extern uint16_t tmc_x_current;
+#endif
+#if AXIS_HAS_STEALTHCHOP(Y)
+  extern uint16_t tmc_y_current;
+#endif
+#if AXIS_HAS_STEALTHCHOP(Z)
+  extern uint16_t tmc_z_current;
+#endif
+#if AXIS_HAS_STEALTHCHOP(E0)
+  extern uint16_t tmc_e0_current;
+#endif
+#if AXIS_HAS_STEALTHCHOP(E1)
+  extern uint16_t tmc_e1_current;
+#endif
+
+typedef enum {
+  EX_HEATING,
+  EX_HEAT_STARUS,
+  EX_CHANGING,
+  EX_CHANGE_STATUS,
+  EX_NONE,
+} EX_STATUS_DEF;
+
+typedef struct {
+  //uint8_t ex_change_flag:1;
+  //uint8_t ex_heat_flag:1;
+  uint8_t ex_load_unload_flag:1;  //0:unload  1:load
+  EX_STATUS_DEF ex_status;
+  uint32_t ex_tick_start;
+  uint32_t ex_tick_end;
+  uint32_t ex_speed;
+  uint32_t ex_length;
+  uint32_t ex_need_time;
+} EX_FILAMENT_DEF;
+
+extern EX_FILAMENT_DEF ex_filament;
+
+typedef enum {
+  UNRUNOUT_STATUS,
+  RUNOUT_STATUS,
+  RUNOUT_WAITTING_STATUS,
+  RUNOUT_BEGIN_STATUS,
+} RUNOUT_MKS_STATUS_DEF;
+
+typedef struct {
+  RUNOUT_MKS_STATUS_DEF runout_status;
+  uint8_t pin_status;
+  uint8_t de_count;
+  uint8_t de_times;
+} RUNOUT_MKS_DEF;
+
+extern RUNOUT_MKS_DEF runout_mks;
+
+typedef struct {
+  uint8_t print_pause_start_flag:1;
+  uint8_t runout_flag:1;
+  bool blstatus;
+  uint16_t x_pos;
+  uint16_t y_pos;
+  uint16_t z_pos;
+} NOZZLE_PARK_DEF;
+
+extern NOZZLE_PARK_DEF nozzle_park_mks;
+
+enum DGUSLCD_Screens : uint8_t {
+  #if ENABLED(USE_MKS_GREEN_UI)
+
+    DGUSLCD_SCREEN_BOOT                 =  33,
+    DGUSLCD_SCREEN_MAIN                 =  60,
+    DGUSLCD_SCREEN_STATUS               =  60,
+    DGUSLCD_SCREEN_STATUS2              =  60,
+    DGUSLCD_SCREEN_PREHEAT              =  18,
+    DGUSLCD_SCREEN_POWER_LOSS           = 100,
+    DGUSLCD_SCREEN_MANUALMOVE           = 192,
+    DGUSLCD_SCREEN_UTILITY              = 120,
+    DGUSLCD_SCREEN_FILAMENT_UNLOADING   = 158,
+    DGUSLCD_SCREEN_SDFILELIST           =  15,
+    DGUSLCD_SCREEN_SDPRINTMANIPULATION  =  15,
+    DGUSLCD_SCREEN_SDPRINTTUNE          =  17,
+
+    MKSLCD_SCREEN_BOOT                  =  33,
+    MKSLCD_SCREEN_HOME                  =  60,   // MKS main page
+    MKSLCD_SCREEN_SETTING               =  62,   // MKS Setting page / no wifi whit
+    MKSLCD_SCREEM_TOOL                  =  64,   // MKS Tool page
+    MKSLCD_SCREEN_EXTRUDE_P1            =  75,
+    MKSLCD_SCREEN_EXTRUDE_P2            =  77,
+    MKSLCD_SCREEN_LEVEL                 =  73,
+    MKSLCD_AUTO_LEVEL                   =  81,
+    MKSLCD_SCREEN_MOVE                  =  66,
+    MKSLCD_SCREEN_PRINT                 =  68,
+    MKSLCD_SCREEN_PAUSE                 =  70,
+    MKSLCD_SCREEN_CHOOSE_FILE           =  87,
+    MKSLCD_SCREEN_NO_CHOOSE_FILE        =  88,
+    MKSLCD_SCREEN_Config                = 101,
+    MKSLCD_SCREEN_Config_MOTOR          = 103,
+    MKSLCD_SCREEN_MOTOR_PLUSE           = 104,
+    MKSLCD_SCREEN_MOTOR_SPEED           = 102,
+    MKSLCD_SCREEN_MOTOR_ACC_MAX         = 105,
+    MKSLCD_SCREEN_PRINT_CONFIG          =  72,
+    MKSLCD_SCREEN_LEVEL_DATA            = 106,
+    MKSLCD_PrintPause_SET               = 107,
+    MKSLCD_FILAMENT_DATA                =  50,
+    MKSLCD_ABOUT                        =  83,
+    MKSLCD_PID                          = 108,
+    MKSLCD_PAUSE_SETTING_MOVE           =  98,
+    MKSLCD_PAUSE_SETTING_EX             =  96,
+    MKSLCD_PAUSE_SETTING_EX2            =  97,
+    MKSLCD_SCREEN_PRINT_CONFIRM         =  94,
+    MKSLCD_SCREEN_EX_CONFIG             = 112,
+    MKSLCD_SCREEN_EEP_Config            =  89,
+    MKSLCD_SCREEN_PrintDone             =  92,
+    MKSLCD_SCREEN_TMC_Config            = 111,
+    MKSLCD_Screen_Offset_Config         = 109,
+    MKSLCD_Screen_PMove                 =  98,
+    MKSLCD_Screen_Baby                  =  79,
+
+  #else
+
+    DGUSLCD_SCREEN_BOOT                 = 120,
+    DGUSLCD_SCREEN_MAIN                 =   1,
+
+    DGUSLCD_SCREEN_STATUS               =   1,
+    DGUSLCD_SCREEN_STATUS2              =   1,
+    DGUSLCD_SCREEN_PREHEAT              =  18,
+    DGUSLCD_SCREEN_POWER_LOSS           = 100,
+    DGUSLCD_SCREEN_MANUALMOVE           = 192,
+    DGUSLCD_SCREEN_UTILITY              = 120,
+    DGUSLCD_SCREEN_FILAMENT_UNLOADING   = 158,
+    DGUSLCD_SCREEN_SDFILELIST           =  15,
+    DGUSLCD_SCREEN_SDPRINTMANIPULATION  =  15,
+    DGUSLCD_SCREEN_SDPRINTTUNE          =  17,
+
+    MKSLCD_SCREEN_BOOT                  =   0,
+    MKSLCD_SCREEN_HOME                  =   1,   // MKS main page
+    MKSLCD_SCREEN_SETTING               =   2,   // MKS Setting page / no wifi whit
+    MKSLCD_SCREEM_TOOL                  =   3,   // MKS Tool page
+    MKSLCD_SCREEN_EXTRUDE_P1            =   4,
+    MKSLCD_SCREEN_EXTRUDE_P2            =  11,
+    MKSLCD_SCREEN_LEVEL                 =   5,
+    MKSLCD_AUTO_LEVEL                   =  73,
+    MKSLCD_SCREEN_LEVEL_PRESS           =   9,
+    MKSLCD_SCREEN_MOVE                  =   6,
+    MKSLCD_SCREEN_PRINT                 =   7,
+    MKSLCD_SCREEN_PRINT_PRESS           =  13,
+    MKSLCD_SCREEN_PAUSE                 =  26,
+    MKSLCD_SCREEN_PAUSE_PRESS           =  26,
+    MKSLCD_SCREEN_CHOOSE_FILE           =  15,
+    MKSLCD_SCREEN_NO_CHOOSE_FILE        =  17,
+    MKSLCD_SCREEN_Config                =  46,
+    MKSLCD_SCREEN_Config_MOTOR          =  47,
+    MKSLCD_SCREEN_MOTOR_PLUSE           =  51,
+    MKSLCD_SCREEN_MOTOR_SPEED           =  55,
+    MKSLCD_SCREEN_MOTOR_ACC_MAX         =  53,
+    MKSLCD_SCREEN_PRINT_CONFIG          =  60,
+    MKSLCD_SCREEN_LEVEL_DATA            =  48,
+    MKSLCD_PrintPause_SET               =  49,
+    MKSLCD_FILAMENT_DATA                =  50,
+    MKSLCD_ABOUT                        =  36,
+    MKSLCD_PID                          =  56,
+    MKSLCD_PAUSE_SETTING_MOVE           =  58,
+    MKSLCD_PAUSE_SETTING_EX             =  57,
+    MKSLCD_PAUSE_SETTING_EX2            =  61,
+    MKSLCD_SCREEN_NO_FILE               =  42,
+    MKSLCD_SCREEN_PRINT_CONFIRM         =  43,
+    MKSLCD_SCREEN_EX_CONFIG             =  65,
+    MKSLCD_SCREEN_EEP_Config            =  20,
+    MKSLCD_SCREEN_PrintDone             =  25,
+    MKSLCD_SCREEN_TMC_Config            =  70,
+    MKSLCD_Screen_Offset_Config         =  30,
+    MKSLCD_Screen_PMove                 =  64,
+    MKSLCD_Screen_Baby                  =  71,
+
+  #endif
+
+  DGUSLCD_SCREEN_CONFIRM                = 240,
+  DGUSLCD_SCREEN_KILL                   = 250, ///< Kill Screen. Must always be 250 (to be able to display "Error wrong LCD Version")
+  DGUSLCD_SCREEN_WAITING                = 251,
+  DGUSLCD_SCREEN_POPUP                  = 252, ///< special target, popup screen will also return this code to say "return to previous screen"
+  DGUSLDC_SCREEN_UNUSED                 = 255
+};
+
+// Display Memory layout used (T5UID)
+// Except system variables this is arbitrary, just to organize stuff....
+
+// 0x0000 .. 0x0FFF  -- System variables and reserved by the display
+// 0x1000 .. 0x1FFF  -- Variables to never change location, regardless of UI Version
+// 0x2000 .. 0x2FFF  -- Controls (VPs that will trigger some action)
+// 0x3000 .. 0x4FFF  -- Marlin Data to be displayed
+// 0x5000 ..         -- SPs (if we want to modify display elements, e.g change color or like) -- currently unused
+
+// As there is plenty of space (at least most displays have >8k RAM), we do not pack them too tight,
+// so that we can keep variables nicely together in the address space.
+
+// UI Version always on 0x1000...0x1002 so that the firmware can check this and bail out.
+
+// constexpr uint16_t VP_UI_VERSION_MAJOR = 0x1000;  // Major -- incremented when incompatible
+// constexpr uint16_t VP_UI_VERSION_MINOR = 0x1001;  // Minor -- incremented on new features, but compatible
+// constexpr uint16_t VP_UI_VERSION_PATCH = 0x1002;  // Patch -- fixed which do not change functionality.
+// constexpr uint16_t VP_UI_FLAVOUR       = 0x1010;  // lets reserve 16 bytes here to determine if UI is suitable for this Marlin. tbd.
+
+// Storage space for the Killscreen messages. 0x1100 - 0x1200 . Reused for the popup.
+// constexpr uint16_t VP_MSGSTR1 = 0x1100;
+// constexpr uint8_t VP_MSGSTR1_LEN = 0x20;  // might be more place for it...
+// constexpr uint16_t VP_MSGSTR2 = 0x1140;
+// constexpr uint8_t VP_MSGSTR2_LEN = 0x20;
+// constexpr uint16_t VP_MSGSTR3 = 0x1180;
+// constexpr uint8_t VP_MSGSTR3_LEN = 0x20;
+// constexpr uint16_t VP_MSGSTR4 = 0x11C0;
+// constexpr uint8_t VP_MSGSTR4_LEN = 0x20;
+
+// Screenchange request for screens that only make sense when printer is idle.
+// e.g movement is only allowed if printer is not printing.
+// Marlin must confirm by setting the screen manually.
+// constexpr uint16_t VP_SCREENCHANGE_ASK = 0x2000;
+// constexpr uint16_t VP_SCREENCHANGE = 0x2001;   // Key-Return button to new menu pressed. Data contains target screen in low byte and info in high byte.
+// constexpr uint16_t VP_TEMP_ALL_OFF = 0x2002;   // Turn all heaters off. Value arbitrary ;)=
+// constexpr uint16_t VP_SCREENCHANGE_WHENSD = 0x2003; // "Print" Button touched -- go only there if there is an SD Card.
+// constexpr uint16_t VP_CONFIRMED = 0x2010; // OK on confirm screen.
+
+// // Buttons on the SD-Card File listing.
+// constexpr uint16_t VP_SD_ScrollEvent = 0x2020; // Data: 0 for "up a directory", numbers are the amount to scroll, e.g -1 one up, 1 one down
+// constexpr uint16_t VP_SD_FileSelected = 0x2022; // Number of file field selected.
+// constexpr uint16_t VP_SD_FileSelectConfirm = 0x2024; // (This is a virtual VP and emulated by the Confirm Screen when a file has been confirmed)
+
+// constexpr uint16_t VP_SD_ResumePauseAbort = 0x2026; // Resume(Data=0), Pause(Data=1), Abort(Data=2) SD Card prints
+// constexpr uint16_t VP_SD_AbortPrintConfirmed = 0x2028; // Abort print confirmation (virtual, will be injected by the confirm dialog)
+// constexpr uint16_t VP_SD_Print_Setting = 0x2040;
+// constexpr uint16_t VP_SD_Print_LiveAdjustZ = 0x2050; // Data: 0 down, 1 up
+
+// Controls for movement (we can't use the incremental / decremental feature of the display at this feature works only with 16 bit values
+// (which would limit us to 655.35mm, which is likely not a problem for common setups, but i don't want to rule out hangprinters support)
+// A word about the coding: The VP will be per axis and the return code will be an signed 16 bit value in 0.01 mm resolution, telling us
+// the relative travel amount t he user wants to do. So eg. if the display sends us VP=2100 with value 100, the user wants us to move X by +1 mm.
+// constexpr uint16_t VP_MOVE_X = 0x2100;
+// constexpr uint16_t VP_MOVE_Y = 0x2102;
+// constexpr uint16_t VP_MOVE_Z = 0x2104;
+// constexpr uint16_t VP_MOVE_E0 = 0x2110;
+// constexpr uint16_t VP_MOVE_E1 = 0x2112;
+// //constexpr uint16_t VP_MOVE_E2 = 0x2114;
+// //constexpr uint16_t VP_MOVE_E3 = 0x2116;
+// //constexpr uint16_t VP_MOVE_E4 = 0x2118;
+// //constexpr uint16_t VP_MOVE_E5 = 0x211A;
+// constexpr uint16_t VP_HOME_ALL = 0x2120;
+// constexpr uint16_t VP_MOTOR_LOCK_UNLOK = 0x2130;
+// constexpr uint16_t VP_XYZ_HOME = 0x2132;
+
+// Power loss recovery
+// constexpr uint16_t VP_POWER_LOSS_RECOVERY = 0x2180;
+
+// // Fan Control Buttons , switch between "off" and "on"
+// constexpr uint16_t VP_FAN0_CONTROL = 0x2200;
+// constexpr uint16_t VP_FAN1_CONTROL = 0x2202;
+// constexpr uint16_t VP_FAN2_CONTROL = 0x2204;
+// constexpr uint16_t VP_FAN3_CONTROL = 0x2206;
+
+// // Heater Control Buttons , triged between "cool down" and "heat PLA" state
+// constexpr uint16_t VP_E0_CONTROL = 0x2210;
+// constexpr uint16_t VP_E1_CONTROL = 0x2212;
+// //constexpr uint16_t VP_E2_CONTROL = 0x2214;
+// //constexpr uint16_t VP_E3_CONTROL = 0x2216;
+// //constexpr uint16_t VP_E4_CONTROL = 0x2218;
+// //constexpr uint16_t VP_E5_CONTROL = 0x221A;
+// constexpr uint16_t VP_BED_CONTROL = 0x221C;
+
+// // Preheat
+// constexpr uint16_t VP_E0_BED_PREHEAT = 0x2220;
+// constexpr uint16_t VP_E1_BED_PREHEAT = 0x2222;
+// //constexpr uint16_t VP_E2_BED_PREHEAT = 0x2224;
+// //constexpr uint16_t VP_E3_BED_PREHEAT = 0x2226;
+// //constexpr uint16_t VP_E4_BED_PREHEAT = 0x2228;
+// //constexpr uint16_t VP_E5_BED_PREHEAT = 0x222A;
+
+// // Filament load and unload
+// // constexpr uint16_t VP_E0_FILAMENT_LOAD_UNLOAD = 0x2300;
+// // constexpr uint16_t VP_E1_FILAMENT_LOAD_UNLOAD = 0x2302;
+
+// // Settings store , reset
+
+// // PID autotune
+// constexpr uint16_t VP_PID_AUTOTUNE_E0 = 0x2410;
+// constexpr uint16_t VP_PID_AUTOTUNE_E1 = 0x2412;
+// //constexpr uint16_t VP_PID_AUTOTUNE_E2 = 0x2414;
+// //constexpr uint16_t VP_PID_AUTOTUNE_E3 = 0x2416;
+// //constexpr uint16_t VP_PID_AUTOTUNE_E4 = 0x2418;
+// //constexpr uint16_t VP_PID_AUTOTUNE_E5 = 0x241A;
+// constexpr uint16_t VP_PID_AUTOTUNE_BED = 0x2420;
+// // Calibrate Z
+// constexpr uint16_t VP_Z_CALIBRATE = 0x2430;
+
+// First layer cal
+// constexpr uint16_t VP_Z_FIRST_LAYER_CAL = 0x2500; // Data: 0 - Cancel first layer cal progress, >0 filament type have loaded
+
+// Firmware version on the boot screen.
+// constexpr uint16_t VP_MARLIN_VERSION = 0x3000;
+// constexpr uint8_t VP_MARLIN_VERSION_LEN = 16;   // there is more space on the display, if needed.
+
+// Place for status messages.
+constexpr uint16_t VP_M117 = 0x7020;
+constexpr uint8_t VP_M117_LEN = 0x20;
+
+// // Temperatures.
+// constexpr uint16_t VP_T_E0_Is = 0x3060;  // 4 Byte Integer
+// constexpr uint16_t VP_T_E0_Set = 0x3062; // 2 Byte Integer
+// constexpr uint16_t VP_T_E1_Is = 0x3064;  // 4 Byte Integer
+// // reserved to support up to 6 Extruders:
+// constexpr uint16_t VP_T_E1_Set = 0x3066; // 2 Byte Integer
+// constexpr uint16_t VP_T_E2_Is = 0x3068;  // 4 Byte Integer
+// constexpr uint16_t VP_T_E2_Set = 0x306A; // 2 Byte Integer
+// constexpr uint16_t VP_T_E3_Is = 0x306C;  // 4 Byte Integer
+// constexpr uint16_t VP_T_E3_Set = 0x306E; // 2 Byte Integer
+// constexpr uint16_t VP_T_E4_Is = 0x3070;  // 4 Byte Integer
+// constexpr uint16_t VP_T_E4_Set = 0x3072; // 2 Byte Integer
+// constexpr uint16_t VP_T_E5_Is = 0x3074;  // 4 Byte Integer
+// constexpr uint16_t VP_T_E5_Set = 0x3076; // 2 Byte Integer
+// constexpr uint16_t VP_T_E6_Is = 0x3078;  // 4 Byte Integer
+// constexpr uint16_t VP_T_E6_Set = 0x307A; // 2 Byte Integer
+// constexpr uint16_t VP_T_E7_Is = 0x3078;  // 4 Byte Integer
+// constexpr uint16_t VP_T_E7_Set = 0x307A; // 2 Byte Integer
+
+
+// constexpr uint16_t VP_T_Bed_Is = 0x3080;  // 4 Byte Integer
+// constexpr uint16_t VP_T_Bed_Set = 0x3082; // 2 Byte Integer
+
+// constexpr uint16_t VP_Flowrate_E0 = 0x3090; // 2 Byte Integer
+// constexpr uint16_t VP_Flowrate_E1 = 0x3092; // 2 Byte Integer
+// // reserved for up to 6 Extruders:
+// constexpr uint16_t VP_Flowrate_E2 = 0x3094;
+// constexpr uint16_t VP_Flowrate_E3 = 0x3096;
+// constexpr uint16_t VP_Flowrate_E4 = 0x3098;
+// constexpr uint16_t VP_Flowrate_E5 = 0x309A;
+
+// constexpr uint16_t VP_Fan0_Percentage = 0x3100;  // 2 Byte Integer (0..100)
+// constexpr uint16_t VP_Fan1_Percentage = 0x3102;  // 2 Byte Integer (0..100)
+// constexpr uint16_t VP_Fan2_Percentage = 0x3104;  // 2 Byte Integer (0..100)
+// constexpr uint16_t VP_Fan3_Percentage = 0x3106;  // 2 Byte Integer (0..100)
+// constexpr uint16_t VP_Feedrate_Percentage = 0x3108; // 2 Byte Integer (0..100)
+
+// Actual Position
+// constexpr uint16_t VP_XPos = 0x3110;  // 4 Byte Fixed point number; format xxx.yy
+// constexpr uint16_t VP_YPos = 0x3112;  // 4 Byte Fixed point number; format xxx.yy
+// constexpr uint16_t VP_ZPos = 0x3114;  // 4 Byte Fixed point number; format xxx.yy
+// constexpr uint16_t VP_EPos = 0x3120;  // 4 Byte Fixed point number; format xxx.yy
+
+// constexpr uint16_t VP_PrintProgress_Percentage = 0x3130; // 2 Byte Integer (0..100)
+
+// constexpr uint16_t VP_PrintTime = 0x3140;
+// constexpr uint16_t VP_PrintTime_LEN = 32;
+
+// constexpr uint16_t VP_PrintAccTime = 0x3160;
+// constexpr uint16_t VP_PrintAccTime_LEN = 32;
+
+// constexpr uint16_t VP_PrintsTotal = 0x3180;
+// constexpr uint16_t VP_PrintsTotal_LEN = 16;
+
+// // SDCard File Listing
+// constexpr uint16_t VP_SD_FileName_LEN = 32; // LEN is shared for all entries.
+// constexpr uint16_t DGUS_SD_FILESPERSCREEN = 8; // FIXME move that info to the display and read it from there.
+// constexpr uint16_t VP_SD_FileName0 = 0x3200;
+// constexpr uint16_t VP_SD_FileName1 = 0x3220;
+// constexpr uint16_t VP_SD_FileName2 = 0x3240;
+// constexpr uint16_t VP_SD_FileName3 = 0x3260;
+// constexpr uint16_t VP_SD_FileName4 = 0x3280;
+// constexpr uint16_t VP_SD_FileName5 = 0x32A0;
+// constexpr uint16_t VP_SD_FileName6 = 0x32C0;
+// constexpr uint16_t VP_SD_FileName7 = 0x32E0;
+
+// Heater status
+constexpr uint16_t VP_E0_STATUS = 0x3410;
+constexpr uint16_t VP_E1_STATUS = 0x3412;
+//constexpr uint16_t VP_E2_STATUS = 0x3414;
+//constexpr uint16_t VP_E3_STATUS = 0x3416;
+//constexpr uint16_t VP_E4_STATUS = 0x3418;
+//constexpr uint16_t VP_E5_STATUS = 0x341A;
+constexpr uint16_t VP_MOVE_OPTION = 0x3500;
+
+// // PIDs
+// constexpr uint16_t VP_E0_PID_P = 0x3700; // at the moment , 2 byte unsigned int , 0~1638.4
+// constexpr uint16_t VP_E0_PID_I = 0x3702;
+// constexpr uint16_t VP_E0_PID_D = 0x3704;
+// constexpr uint16_t VP_E1_PID_P = 0x3706; // at the moment , 2 byte unsigned int , 0~1638.4
+// constexpr uint16_t VP_E1_PID_I = 0x3708;
+// constexpr uint16_t VP_E1_PID_D = 0x370A;
+// constexpr uint16_t VP_BED_PID_P = 0x3710;
+// constexpr uint16_t VP_BED_PID_I = 0x3712;
+// constexpr uint16_t VP_BED_PID_D = 0x3714;
+
+// Wating screen status
+constexpr uint16_t VP_WAITING_STATUS = 0x3800;
+
+// SPs for certain variables...
+// located at 0x5000 and up
+// Not used yet!
+// This can be used e.g to make controls / data display invisible
+constexpr uint16_t SP_T_E0_Is     = 0x5000;
+constexpr uint16_t SP_T_E0_Set    = 0x5010;
+constexpr uint16_t SP_T_E1_Is     = 0x5020;
+constexpr uint16_t SP_T_Bed_Is    = 0x5030;
+constexpr uint16_t SP_T_Bed_Set   = 0x5040;
+
+/*************************************************************************************************************************
+ *************************************************************************************************************************
+ *                                                 DGUS for MKS Mem layout
+ ************************************************************************************************************************
+ ************************************************************************************************************************/
+
+#if ENABLED(MKS_FINSH)
+  /* -------------------------------0x1000-0x1FFF------------------------------- */
+  constexpr uint16_t VP_MSGSTR1                       = 0x1100;
+  constexpr uint8_t  VP_MSGSTR1_LEN                   = 0x20;  // might be more place for it...
+  constexpr uint16_t VP_MSGSTR2                       = 0x1140;
+  constexpr uint8_t  VP_MSGSTR2_LEN                   = 0x20;
+  constexpr uint16_t VP_MSGSTR3                       = 0x1180;
+  constexpr uint8_t  VP_MSGSTR3_LEN                   = 0x20;
+  constexpr uint16_t VP_MSGSTR4                       = 0x11C0;
+  constexpr uint8_t  VP_MSGSTR4_LEN                   = 0x20;
+
+  constexpr uint16_t VP_MARLIN_VERSION                = 0x1A00;
+  constexpr uint8_t VP_MARLIN_VERSION_LEN             = 16;       // there is more space on the display, if needed.
+
+
+  constexpr uint16_t VP_SCREENCHANGE_ASK              = 0x1500;
+  constexpr uint16_t VP_SCREENCHANGE                  = 0x1501;   // Key-Return button to new menu pressed. Data contains target screen in low byte and info in high byte.
+  constexpr uint16_t VP_TEMP_ALL_OFF                  = 0x1502;   // Turn all heaters off. Value arbitrary ;)=
+  constexpr uint16_t VP_SCREENCHANGE_WHENSD           = 0x1503;   // "Print" Button touched -- go only there if there is an SD Card.
+  constexpr uint16_t VP_CONFIRMED                     = 0x1510;   // OK on confirm screen.
+
+  constexpr uint16_t VP_BACK_PAGE                     = 0x1600;
+  constexpr uint16_t VP_SETTINGS                      = 0x1620;
+  // Power loss recovery
+  constexpr uint16_t VP_POWER_LOSS_RECOVERY           = 0x1680;
+  /* -------------------------------0x2000-0x2FFF------------------------------- */
+  // Temperatures.
+  constexpr uint16_t VP_T_E0_Is                       = 0x2000;   // 4 Byte Integer
+  constexpr uint16_t VP_T_E0_Set                      = 0x2004;   // 2 Byte Integer
+  constexpr uint16_t VP_T_E1_Is                       = 0x2008;   // 4 Byte Integer
+  constexpr uint16_t VP_T_E1_Set                      = 0x200B;   // 2 Byte Integer
+  constexpr uint16_t VP_T_E2_Is                       = 0x2010;   // 4 Byte Integer
+  constexpr uint16_t VP_T_E2_Set                      = 0x2014;   // 2 Byte Integer
+  constexpr uint16_t VP_T_E3_Is                       = 0x2018;   // 4 Byte Integer
+  constexpr uint16_t VP_T_E3_Set                      = 0x201B;   // 2 Byte Integer
+  constexpr uint16_t VP_T_E4_Is                       = 0x2020;   // 4 Byte Integer
+  constexpr uint16_t VP_T_E4_Set                      = 0x2024;   // 2 Byte Integer
+  constexpr uint16_t VP_T_E5_Is                       = 0x2028;   // 4 Byte Integer
+  constexpr uint16_t VP_T_E5_Set                      = 0x202B;   // 2 Byte Integer
+  constexpr uint16_t VP_T_E6_Is                       = 0x2030;   // 4 Byte Integer
+  constexpr uint16_t VP_T_E6_Set                      = 0x2034;   // 2 Byte Integer
+  constexpr uint16_t VP_T_E7_Is                       = 0x2038;   // 4 Byte Integer
+  constexpr uint16_t VP_T_E7_Set                      = 0x203B;   // 2 Byte Integer
+
+  constexpr uint16_t VP_T_Bed_Is                      = 0x2040;   // 4 Byte Integer
+  constexpr uint16_t VP_T_Bed_Set                     = 0x2044;   // 2 Byte Integer
+
+  constexpr uint16_t VP_Min_EX_T_E                    = 0x2100;
+
+  constexpr uint16_t VP_Flowrate_E0                   = 0x2200;   // 2 Byte Integer
+  constexpr uint16_t VP_Flowrate_E1                   = 0x2202;   // 2 Byte Integer
+  constexpr uint16_t VP_Flowrate_E2                   = 0x2204;
+  constexpr uint16_t VP_Flowrate_E3                   = 0x2206;
+  constexpr uint16_t VP_Flowrate_E4                   = 0x2208;
+  constexpr uint16_t VP_Flowrate_E5                   = 0x220A;
+  constexpr uint16_t VP_Flowrate_E6                   = 0x220C;
+  constexpr uint16_t VP_Flowrate_E7                   = 0x220E;
+
+  // Move
+  constexpr uint16_t VP_MOVE_X                        = 0x2300;
+  constexpr uint16_t VP_MOVE_Y                        = 0x2302;
+  constexpr uint16_t VP_MOVE_Z                        = 0x2304;
+  constexpr uint16_t VP_MOVE_E0                       = 0x2310;
+  constexpr uint16_t VP_MOVE_E1                       = 0x2312;
+  constexpr uint16_t VP_MOVE_E2                       = 0x2314;
+  constexpr uint16_t VP_MOVE_E3                       = 0x2316;
+  constexpr uint16_t VP_MOVE_E4                       = 0x2318;
+  constexpr uint16_t VP_MOVE_E5                       = 0x231A;
+  constexpr uint16_t VP_MOVE_E6                       = 0x231C;
+  constexpr uint16_t VP_MOVE_E7                       = 0x231E;
+  constexpr uint16_t VP_HOME_ALL                      = 0x2320;
+  constexpr uint16_t VP_MOTOR_LOCK_UNLOK              = 0x2330;
+  constexpr uint16_t VP_MOVE_DISTANCE                 = 0x2334;
+  constexpr uint16_t VP_X_HOME                        = 0x2336;
+  constexpr uint16_t VP_Y_HOME                        = 0x2338;
+  constexpr uint16_t VP_Z_HOME                        = 0x233A;
+
+  // Fan Control Buttons , switch between "off" and "on"
+  constexpr uint16_t VP_FAN0_CONTROL                  = 0x2350;
+  constexpr uint16_t VP_FAN1_CONTROL                  = 0x2352;
+  constexpr uint16_t VP_FAN2_CONTROL                  = 0x2354;
+  constexpr uint16_t VP_FAN3_CONTROL                  = 0x2356;
+  constexpr uint16_t VP_FAN4_CONTROL                  = 0x2358;
+  constexpr uint16_t VP_FAN5_CONTROL                  = 0x235A;
+
+  constexpr uint16_t VP_LANGUAGE_CHANGE               = 0x2380;
+  constexpr uint16_t VP_LANGUAGE_CHANGE1              = 0x2382;
+  constexpr uint16_t VP_LANGUAGE_CHANGE2              = 0x2384;
+  constexpr uint16_t VP_LANGUAGE_CHANGE3              = 0x2386;
+  constexpr uint16_t VP_LANGUAGE_CHANGE4              = 0x2388;
+  constexpr uint16_t VP_LANGUAGE_CHANGE5              = 0x238A;
+
+  // LEVEL
+  constexpr uint16_t VP_LEVEL_POINT                   = 0x2400;
+  constexpr uint16_t VP_MESH_LEVEL_POINT              = 0x2410;
+  constexpr uint16_t VP_MESH_LEVEL_ADJUST             = 0x2412;
+  constexpr uint16_t VP_MESH_LEVEL_DIP                = 0x2414;
+  constexpr uint16_t VP_MESH_LEVEL_POINT_X            = 0x2416;
+  constexpr uint16_t VP_MESH_LEVEL_POINT_Y            = 0x2418;
+  constexpr uint16_t VP_LEVEL_BUTTON                  = 0x2420;
+  constexpr uint16_t VP_MESH_LEVEL_POINT_DIS          = 0x2422;
+  constexpr uint16_t VP_MESH_LEVEL_BACK               = 0x2424;
+
+  constexpr uint16_t VP_E0_FILAMENT_LOAD_UNLOAD       = 0x2500;
+  constexpr uint16_t VP_E1_FILAMENT_LOAD_UNLOAD       = 0x2504;
+  constexpr uint16_t VP_LOAD_Filament                 = 0x2508;
+  // constexpr uint16_t VP_LOAD_UNLOAD_Cancle            = 0x250A;
+  constexpr uint16_t VP_UNLOAD_Filament               = 0x250B;
+  constexpr uint16_t VP_Filament_distance             = 0x2600;
+  constexpr uint16_t VP_Filament_speed                = 0x2604;
+  constexpr uint16_t VP_MIN_EX_T                      = 0x2606;
+
+  constexpr uint16_t VP_E1_Filament_distance          = 0x2614;
+  constexpr uint16_t VP_E1_Filament_speed             = 0x2616;
+  constexpr uint16_t VP_E1_MIN_EX_T                   = 0x2618;
+
+  constexpr uint16_t VP_Fan0_Percentage               = 0x2700;   // 2 Byte Integer (0..100)
+  constexpr uint16_t VP_Fan1_Percentage               = 0x2702;   // 2 Byte Integer (0..100)
+  constexpr uint16_t VP_Fan2_Percentage               = 0x2704;   // 2 Byte Integer (0..100)
+  constexpr uint16_t VP_Fan3_Percentage               = 0x2706;   // 2 Byte Integer (0..100)
+  constexpr uint16_t VP_Feedrate_Percentage           = 0x2708;   // 2 Byte Integer (0..100)
+
+  // Fan status
+  constexpr uint16_t VP_FAN0_STATUS                   = 0x2710;
+  constexpr uint16_t VP_FAN1_STATUS                   = 0x2712;
+  constexpr uint16_t VP_FAN2_STATUS                   = 0x2714;
+  constexpr uint16_t VP_FAN3_STATUS                   = 0x2716;
+
+  // Step per mm
+  constexpr uint16_t VP_X_STEP_PER_MM                 = 0x2900;   // at the moment , 2 byte unsigned int , 0~1638.4
+  constexpr uint16_t VP_Y_STEP_PER_MM                 = 0x2904;
+  constexpr uint16_t VP_Z_STEP_PER_MM                 = 0x2908;
+  constexpr uint16_t VP_E0_STEP_PER_MM                = 0x2910;
+  constexpr uint16_t VP_E1_STEP_PER_MM                = 0x2912;
+  constexpr uint16_t VP_E2_STEP_PER_MM                = 0x2914;
+  constexpr uint16_t VP_E3_STEP_PER_MM                = 0x2916;
+  constexpr uint16_t VP_E4_STEP_PER_MM                = 0x2918;
+  constexpr uint16_t VP_E5_STEP_PER_MM                = 0x291A;
+  constexpr uint16_t VP_E6_STEP_PER_MM                = 0x291C;
+  constexpr uint16_t VP_E7_STEP_PER_MM                = 0x291E;
+
+  constexpr uint16_t VP_X_MAX_SPEED                   = 0x2A00;
+  constexpr uint16_t VP_Y_MAX_SPEED                   = 0x2A04;
+  constexpr uint16_t VP_Z_MAX_SPEED                   = 0x2A08;
+  constexpr uint16_t VP_E0_MAX_SPEED                  = 0x2A0C;
+  constexpr uint16_t VP_E1_MAX_SPEED                  = 0x2A10;
+
+  constexpr uint16_t VP_X_ACC_MAX_SPEED               = 0x2A28;
+  constexpr uint16_t VP_Y_ACC_MAX_SPEED               = 0x2A2C;
+  constexpr uint16_t VP_Z_ACC_MAX_SPEED               = 0x2A30;
+  constexpr uint16_t VP_E0_ACC_MAX_SPEED              = 0x2A34;
+  constexpr uint16_t VP_E1_ACC_MAX_SPEED              = 0x2A38;
+
+  constexpr uint16_t VP_TRAVEL_SPEED                  = 0x2A3C;
+  constexpr uint16_t VP_FEEDRATE_MIN_SPEED            = 0x2A40;
+  constexpr uint16_t VP_T_F_SPEED                     = 0x2A44;
+  constexpr uint16_t VP_ACC_SPEED                     = 0x2A48;
+
+  /* -------------------------------0x3000-0x3FFF------------------------------- */
+  // Buttons on the SD-Card File listing.
+  constexpr uint16_t VP_SD_ScrollEvent                = 0x3020; // Data: 0 for "up a directory", numbers are the amount to scroll, e.g -1 one up, 1 one down
+  constexpr uint16_t VP_SD_FileSelected               = 0x3022; // Number of file field selected.
+  constexpr uint16_t VP_SD_FileSelectConfirm          = 0x3024; // (This is a virtual VP and emulated by the Confirm Screen when a file has been confirmed)
+  constexpr uint16_t VP_SD_ResumePauseAbort           = 0x3026; // Resume(Data=0), Pause(Data=1), Abort(Data=2) SD Card prints
+  constexpr uint16_t VP_SD_AbortPrintConfirmed        = 0x3028; // Abort print confirmation (virtual, will be injected by the confirm dialog)
+  constexpr uint16_t VP_SD_Print_Setting              = 0x3040;
+  constexpr uint16_t VP_SD_Print_LiveAdjustZ          = 0x3050; // Data: 0 down, 1 up
+  constexpr uint16_t VP_SD_Print_LiveAdjustZ_Confirm  = 0x3060;
+  constexpr uint16_t VP_ZOffset_Distance              = 0x3070;
+  constexpr uint16_t VP_ZOffset_DE_DIS                = 0x3080;
+  // SDCard File Listing
+  constexpr uint16_t VP_SD_FileName_LEN = 32;                   // LEN is shared for all entries.
+  constexpr uint16_t DGUS_SD_FILESPERSCREEN = 10;               // FIXME move that info to the display and read it from there.
+  constexpr uint16_t VP_SD_FileName0                  = 0x3100;
+  constexpr uint16_t VP_SD_FileName1                  = 0x3120;
+  constexpr uint16_t VP_SD_FileName2                  = 0x3140;
+  constexpr uint16_t VP_SD_FileName3                  = 0x3160;
+  constexpr uint16_t VP_SD_FileName4                  = 0x3180;
+  constexpr uint16_t VP_SD_FileName5                  = 0x31A0;
+  constexpr uint16_t VP_SD_FileName6                  = 0x31C0;
+  constexpr uint16_t VP_SD_FileName7                  = 0x31E0;
+  constexpr uint16_t VP_SD_FileName8                  = 0x3200;
+  constexpr uint16_t VP_SD_FileName9                  = 0x3220;
+
+  constexpr uint16_t VP_SD_Print_ProbeOffsetZ         = 0x32A0;
+  constexpr uint16_t VP_SD_Print_Baby                 = 0x32B0;
+  constexpr uint16_t VP_SD_Print_Filename             = 0x32C0;
+
+  // X Y Z Point
+  constexpr uint16_t VP_XPos = 0x3300;  // 4 Byte Fixed point number; format xxx.yy
+  constexpr uint16_t VP_YPos = 0x3302;  // 4 Byte Fixed point number; format xxx.yy
+  constexpr uint16_t VP_ZPos = 0x3304;  // 4 Byte Fixed point number; format xxx.yy
+  constexpr uint16_t VP_EPos = 0x3306;  // 4 Byte Fixed point number; format xxx.yy
+
+  // Print
+  constexpr uint16_t VP_PrintProgress_Percentage      = 0x3330; // 2 Byte Integer (0..100)
+  constexpr uint16_t VP_PrintTime                     = 0x3340;
+  constexpr uint16_t VP_PrintTime_LEN                 = 32;
+  constexpr uint16_t VP_PrintAccTime                  = 0x3360;
+  constexpr uint16_t VP_PrintAccTime_LEN              = 32;
+  constexpr uint16_t VP_PrintsTotal                   = 0x3380;
+  constexpr uint16_t VP_PrintsTotal_LEN               = 16;
+
+  constexpr uint16_t VP_File_Pictutr0                 = 0x3400;
+  constexpr uint16_t VP_File_Pictutr1                 = 0x3402;
+  constexpr uint16_t VP_File_Pictutr2                 = 0x3404;
+  constexpr uint16_t VP_File_Pictutr3                 = 0x3406;
+  constexpr uint16_t VP_File_Pictutr4                 = 0x3408;
+  constexpr uint16_t VP_File_Pictutr5                 = 0x340A;
+  constexpr uint16_t VP_File_Pictutr6                 = 0x340C;
+  constexpr uint16_t VP_File_Pictutr7                 = 0x340E;
+  constexpr uint16_t VP_File_Pictutr8                 = 0x3410;
+  constexpr uint16_t VP_File_Pictutr9                 = 0x3412;
+
+  constexpr uint16_t VP_BED_STATUS                    = 0x341C;
+
+  constexpr uint16_t VP_TMC_X_STEP                    = 0x3430;
+  constexpr uint16_t VP_TMC_Y_STEP                    = 0x3432;
+  constexpr uint16_t VP_TMC_Z_STEP                    = 0x3434;
+
+  constexpr uint16_t VP_TMC_X1_Current                = 0x3436;
+  constexpr uint16_t VP_TMC_Y1_Current                = 0x3438;
+  constexpr uint16_t VP_TMC_X_Current                 = 0x343A;
+  constexpr uint16_t VP_TMC_Y_Current                 = 0x343C;
+  constexpr uint16_t VP_TMC_Z_Current                 = 0x343E;
+  constexpr uint16_t VP_TMC_E0_Current                = 0x3440;
+  constexpr uint16_t VP_TMC_E1_Current                = 0x3442;
+  constexpr uint16_t VP_TMC_Z1_Current                = 0x3444;
+
+
+  constexpr uint16_t VP_PrintTime_H                   = 0x3500;
+  constexpr uint16_t VP_PrintTime_M                   = 0x3502;
+  constexpr uint16_t VP_PrintTime_S                   = 0x3504;
+
+  // PIDs
+  constexpr uint16_t VP_E0_PID_P = 0x3700; // at the moment , 2 byte unsigned int , 0~1638.4
+  constexpr uint16_t VP_E0_PID_I = 0x3702;
+  constexpr uint16_t VP_E0_PID_D = 0x3704;
+  constexpr uint16_t VP_E1_PID_P = 0x3706; // at the moment , 2 byte unsigned int , 0~1638.4
+  constexpr uint16_t VP_E1_PID_I = 0x3708;
+  constexpr uint16_t VP_E1_PID_D = 0x370A;
+  constexpr uint16_t VP_BED_PID_P = 0x3710;
+  constexpr uint16_t VP_BED_PID_I = 0x3712;
+  constexpr uint16_t VP_BED_PID_D = 0x3714;
+
+  constexpr uint16_t VP_EEPROM_CTRL = 0x3720;
+
+  constexpr uint16_t VP_OFFSET_X = 0x3724;
+  constexpr uint16_t VP_OFFSET_Y = 0x3728;
+  constexpr uint16_t VP_OFFSET_Z = 0x372B;
+
+  // PID autotune
+  constexpr uint16_t VP_PID_AUTOTUNE_E0 = 0x3800;
+  constexpr uint16_t VP_PID_AUTOTUNE_E1 = 0x3802;
+  constexpr uint16_t VP_PID_AUTOTUNE_E2 = 0x3804;
+  constexpr uint16_t VP_PID_AUTOTUNE_E3 = 0x3806;
+  constexpr uint16_t VP_PID_AUTOTUNE_E4 = 0x3808;
+  constexpr uint16_t VP_PID_AUTOTUNE_E5 = 0x380A;
+  constexpr uint16_t VP_PID_AUTOTUNE_BED = 0x380C;
+  // Calibrate Z
+  constexpr uint16_t VP_Z_CALIBRATE = 0x3810;
+
+  constexpr uint16_t VP_AutoTurnOffSw = 0x3812;
+  constexpr uint16_t VP_LCD_BLK = 0x3814;
+
+  constexpr uint16_t VP_X_PARK_POS = 0x3900;
+  constexpr uint16_t VP_Y_PARK_POS = 0x3902;
+  constexpr uint16_t VP_Z_PARK_POS = 0x3904;
+
+  /* -------------------------------0x4000-0x4FFF------------------------------- */
+  // Heater Control Buttons , triged between "cool down" and "heat PLA" state
+  constexpr uint16_t VP_E0_CONTROL = 0x4010;
+  constexpr uint16_t VP_E1_CONTROL = 0x4012;
+  //constexpr uint16_t VP_E2_CONTROL = 0x2214;
+  //constexpr uint16_t VP_E3_CONTROL = 0x2216;
+  //constexpr uint16_t VP_E4_CONTROL = 0x2218;
+  //constexpr uint16_t VP_E5_CONTROL = 0x221A;
+  constexpr uint16_t VP_BED_CONTROL = 0x401C;
+
+  // Preheat
+  constexpr uint16_t VP_E0_BED_PREHEAT = 0x4020;
+  constexpr uint16_t VP_E1_BED_PREHEAT = 0x4022;
+  //constexpr uint16_t VP_E2_BED_PREHEAT = 0x4024;
+  //constexpr uint16_t VP_E3_BED_PREHEAT = 0x4026;
+  //constexpr uint16_t VP_E4_BED_PREHEAT = 0x4028;
+  //constexpr uint16_t VP_E5_BED_PREHEAT = 0x402A;
+
+  // Filament load and unload
+  // constexpr uint16_t VP_E0_FILAMENT_LOAD_UNLOAD = 0x4030;
+  // constexpr uint16_t VP_E1_FILAMENT_LOAD_UNLOAD = 0x4032;
+
+  // Settings store , reset
+
+  // Level data
+  constexpr uint16_t VP_Level_Point_One_X              = 0x4100;
+  constexpr uint16_t VP_Level_Point_One_Y              = 0x4102;
+  constexpr uint16_t VP_Level_Point_Two_X              = 0x4104;
+  constexpr uint16_t VP_Level_Point_Two_Y              = 0x4106;
+  constexpr uint16_t VP_Level_Point_Three_X            = 0x4108;
+  constexpr uint16_t VP_Level_Point_Three_Y            = 0x410A;
+  constexpr uint16_t VP_Level_Point_Four_X             = 0x410C;
+  constexpr uint16_t VP_Level_Point_Four_Y             = 0x410E;
+  constexpr uint16_t VP_Level_Point_Five_X             = 0x4110;
+  constexpr uint16_t VP_Level_Point_Five_Y             = 0x4112;
+
+
+  /* H43 Version */
+  constexpr uint16_t VP_MKS_H43_VERSION                = 0x4A00;   // MKS H43 V1.0.0
+  constexpr uint16_t VP_MKS_H43_VERSION_LEN            = 16;
+  constexpr uint16_t VP_MKS_H43_UpdataVERSION          = 0x4A10;   // MKS H43 V1.0.0
+  constexpr uint16_t VP_MKS_H43_UpdataVERSION_LEN      = 16;
+
+  /* -------------------------------0x5000-0xFFFF------------------------------- */
+  constexpr uint16_t VP_HOME_Dis                      = 0x5000;
+  constexpr uint16_t VP_Setting_Dis                   = 0x5010;
+  constexpr uint16_t VP_Tool_Dis                      = 0x5020;
+  constexpr uint16_t VP_Printing_Dis                  = 0x5030;
+
+  constexpr uint16_t VP_Language_Dis                  = 0x5080;
+  constexpr uint16_t VP_LossPoint_Dis                 = 0x5090;
+
+  constexpr uint16_t VP_PrintPauseConfig_Dis          = 0x5120;
+  constexpr uint16_t VP_MotorPluse_Dis                = 0x5140;
+  constexpr uint16_t VP_MotorMaxSpeed_Dis             = 0x5150;
+  constexpr uint16_t VP_MotorMaxAcc_Dis               = 0x5160;
+
+  constexpr uint16_t VP_X_Pluse_Dis                   = 0x5170;
+  constexpr uint16_t VP_Y_Pluse_Dis                   = 0x5180;
+  constexpr uint16_t VP_Z_Pluse_Dis                   = 0x5190;
+  constexpr uint16_t VP_E0_Pluse_Dis                  = 0x51A0;
+  constexpr uint16_t VP_E1_Pluse_Dis                  = 0x51B0;
+
+  constexpr uint16_t VP_X_Max_Speed_Dis               = 0x5280;
+  constexpr uint16_t VP_Y_Max_Speed_Dis               = 0x5290;
+  constexpr uint16_t VP_Z_Max_Speed_Dis               = 0x52A0;
+  constexpr uint16_t VP_E0_Max_Speed_Dis              = 0x52B0;
+  constexpr uint16_t VP_E1_Max_Speed_Dis              = 0x52C0;
+
+  constexpr uint16_t VP_X_Max_Acc_Speed_Dis           = 0x51E0;
+  constexpr uint16_t VP_Y_Max_Acc_Speed_Dis           = 0x51F0;
+  constexpr uint16_t VP_Z_Max_Acc_Speed_Dis           = 0x5200;
+  constexpr uint16_t VP_E0_Max_Acc_Speed_Dis          = 0x5210;
+  constexpr uint16_t VP_E1_Max_Acc_Speed_Dis          = 0x5220;
+
+
+  constexpr uint16_t VP_PrintTime_Dis                 = 0x5470;
+  constexpr uint16_t VP_E0_Temp_Dis                   = 0x5310;
+  constexpr uint16_t VP_E1_Temp_Dis                   = 0x5320;
+  constexpr uint16_t VP_HB_Temp_Dis                   = 0x5330;
+  constexpr uint16_t VP_Feedrate_Dis                  = 0x5350;
+  constexpr uint16_t VP_PrintAcc_Dis                  = 0x5340;
+  constexpr uint16_t VP_Fan_Speed_Dis                 = 0x5360;
+
+  constexpr uint16_t VP_Min_Ex_Temp_Dis               = 0x5380;
+
+
+  constexpr uint16_t VP_X_PARK_POS_Dis                = 0x53E0;
+  constexpr uint16_t VP_Y_PARK_POS_Dis                = 0x53F0;
+  constexpr uint16_t VP_Z_PARK_POS_Dis                = 0x5400;
+
+
+  constexpr uint16_t VP_TravelAcc_Dis                 = 0x5440;
+  constexpr uint16_t VP_FeedRateMin_Dis               = 0x5450;
+  constexpr uint16_t VP_TravelFeeRateMin_Dis          = 0x5460;
+  constexpr uint16_t VP_ACC_Dis                       = 0x5480;
+
+  constexpr uint16_t VP_Extrusion_Dis                 = 0x5230;
+  constexpr uint16_t VP_HeatBed_Dis                   = 0x5240;
+
+  constexpr uint16_t VP_Printting_Dis                 = 0x5430;
+  constexpr uint16_t VP_FactoryDefaults_Dis           = 0x54C0;
+  constexpr uint16_t VP_StoreSetting_Dis              = 0x54B0;
+  constexpr uint16_t VP_Info_EEPROM_2_Dis             = 0x54D0;
+  constexpr uint16_t VP_Info_EEPROM_1_Dis             = 0x54E0;
+
+  constexpr uint16_t VP_AutoLevel_1_Dis               = 0x55F0;
+
+  constexpr uint16_t VP_TMC_X_Step_Dis                = 0x5530;
+  constexpr uint16_t VP_TMC_Y_Step_Dis                = 0x5540;
+  constexpr uint16_t VP_TMC_Z_Step_Dis                = 0x5550;
+  constexpr uint16_t VP_TMC_X1_Current_Dis            = 0x5560;
+  constexpr uint16_t VP_TMC_Y1_Current_Dis            = 0x5570;
+  constexpr uint16_t VP_TMC_X_Current_Dis             = 0x5580;
+  constexpr uint16_t VP_TMC_Y_Current_Dis             = 0x5590;
+  constexpr uint16_t VP_TMC_Z_Current_Dis             = 0x55A0;
+  constexpr uint16_t VP_TMC_E0_Current_Dis            = 0x55B0;
+  constexpr uint16_t VP_TMC_E1_Current_Dis            = 0x55C0;
+  constexpr uint16_t VP_TMC_Z1_Current_Dis            = 0x55E0;
+
+  constexpr uint16_t VP_AutoLEVEL_INFO1               = 0x5600;
+  constexpr uint16_t VP_EX_TEMP_INFO1_Dis             = 0x5610;
+  constexpr uint16_t VP_EX_TEMP_INFO2_Dis             = 0x5620;
+  constexpr uint16_t VP_EX_TEMP_INFO3_Dis             = 0x5630;
+  constexpr uint16_t VP_LCD_BLK_Dis                   = 0x56A0;
+  constexpr uint16_t VP_Info_PrinfFinsh_1_Dis         = 0x5C00;
+  constexpr uint16_t VP_Info_PrinfFinsh_2_Dis         = 0x5C10;
+
+  constexpr uint16_t VP_Length_Dis                    = 0x5B00;
+
+  constexpr uint16_t VP_PrintConfrim_Info_Dis         = 0x5B90;
+  constexpr uint16_t VP_StopPrintConfrim_Info_Dis     = 0x5B80;
+
+  constexpr uint16_t VP_Point_One_Dis                 = 0x5BA0;
+  constexpr uint16_t VP_Point_Two_Dis                 = 0x5BB0;
+  constexpr uint16_t VP_Point_Three_Dis               = 0x5BC0;
+  constexpr uint16_t VP_Point_Four_Dis                = 0x5BD0;
+  constexpr uint16_t VP_Point_Five_Dis                = 0x5BE0;
+
+  constexpr uint16_t VP_Print_Dis                     = 0x5250;
+
+  constexpr uint16_t VP_About_Dis                     = 0x5A00;
+  constexpr uint16_t VP_Config_Dis                    = 0x5A10;
+  constexpr uint16_t VP_Filament_Dis                  = 0x5A20;
+  constexpr uint16_t VP_Move_Dis                      = 0x5A30;
+  constexpr uint16_t VP_Level_Dis                     = 0x5A50;
+  constexpr uint16_t VP_Speed_Dis                     = 0x5A70;
+  constexpr uint16_t VP_InOut_Dis                     = 0x5A80;
+
+  constexpr uint16_t VP_MotorConfig_Dis               = 0x5100;
+  constexpr uint16_t VP_LevelConfig_Dis               = 0x5110;
+  constexpr uint16_t VP_Advance_Dis                   = 0x5130;
+  constexpr uint16_t VP_TemperatureConfig_Dis         = 0x5390;
+
+#endif // MKS_FINSH

Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.h

@@ -0,0 +1,312 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../DGUSDisplay.h"
+#include "../DGUSVPVariable.h"
+#include "../DGUSDisplayDef.h"
+
+#include "../../../../inc/MarlinConfig.h"
+
+enum DGUSLCD_Screens : uint8_t;
+
+class DGUSScreenHandler {
+public:
+  DGUSScreenHandler() = default;
+
+  static bool loop();
+
+  // Send all 4 strings that are displayed on the infoscreen, confirmation screen and kill screen
+  // The bools specifing whether the strings are in RAM or FLASH.
+  static void sendinfoscreen(const char *line1, const char *line2, const char *line3, const char *line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
+
+  static void HandleUserConfirmationPopUp(uint16_t ConfirmVP, const char *line1, const char *line2, const char *line3, const char *line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
+
+  #if 0
+  static void sendinfoscreen_ch_mks(const uint16_t *line1, const uint16_t *line2, const uint16_t *line3, const uint16_t *line4);
+  static void sendinfoscreen_en_mks(const char *line1, const char *line2, const char *line3, const char *line4) ;
+  static void sendinfoscreen_mks(const void *line1, const void *line2, const void *line3, const void *line4, uint16_t language);
+  #endif
+
+  // "M117" Message -- msg is a RAM ptr.
+  static void setstatusmessage(const char *msg);
+  // The same for messages from Flash
+  static void setstatusmessagePGM(PGM_P const msg);
+  // Callback for VP "Display wants to change screen on idle printer"
+  static void ScreenChangeHookIfIdle(DGUS_VP_Variable &var, void *val_ptr);
+  // Callback for VP "Screen has been changed"
+  static void ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr);
+
+  static void ScreenBackChange(DGUS_VP_Variable &var, void *val_ptr);
+
+  // Callback for VP "All Heaters Off"
+  static void HandleAllHeatersOff(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for "Change this temperature"
+  static void HandleTemperatureChanged(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for "Change Flowrate"
+  static void HandleFlowRateChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    // Hook for manual move option
+    static void HandleManualMoveOption(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+
+  static void EEPROM_CTRL(DGUS_VP_Variable &var, void *val_ptr);
+  static void LanguageChange_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void GetOffsetValue(DGUS_VP_Variable &var, void *val_ptr);
+  static void Level_Ctrl_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void MeshLevel(DGUS_VP_Variable &var, void *val_ptr);
+  static void MeshLevelDistanceConfig(DGUS_VP_Variable &var, void *val_ptr);
+  static void ManualAssistLeveling(DGUS_VP_Variable &var, void *val_ptr);
+  static void ZoffsetConfirm(DGUS_VP_Variable &var, void *val_ptr);
+  static void Z_offset_select(DGUS_VP_Variable &var, void *val_ptr);
+  static void GetManualMovestep(DGUS_VP_Variable &var, void *val_ptr);
+  static void GetZoffsetDistance(DGUS_VP_Variable &var, void *val_ptr);
+  static void GetMinExtrudeTemp(DGUS_VP_Variable &var, void *val_ptr);
+  static void GetParkPos_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleGetExMinTemp_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void DGUS_LanguageDisplay(uint8_t var);
+  static void TMC_ChangeConfig(DGUS_VP_Variable &var, void *val_ptr);
+  static void GetTurnOffCtrl(DGUS_VP_Variable &var, void *val_ptr);
+  static void LanguagePInit(void);
+  static void DGUS_Runout_Idle(void);
+  static void DGUS_RunoutInit(void);
+  static void DGUS_ExtrudeLoadInit(void);
+  static void LCD_BLK_Adjust(DGUS_VP_Variable &var, void *val_ptr);
+
+  // Hook for manual move.
+  static void HandleManualMove(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for manual extrude.
+  static void HandleManualExtrude(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for motor lock and unlook
+  static void HandleMotorLockUnlock(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    // Hook for power loss recovery.
+    static void HandlePowerLossRecovery(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for settings
+  static void HandleSettings(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMChanged(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMExtruderChanged(DGUS_VP_Variable &var, void *val_ptr);
+
+  static void HandleStepPerMMChanged_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMExtruderChanged_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleMaxSpeedChange_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleExtruderMaxSpeedChange_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleAccChange_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleMaxAccChange_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleExtruderAccChange_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleChangeLevelPoint_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleTravelAccChange_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleFeedRateMinChange_MKS(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleMin_T_F_MKS(DGUS_VP_Variable &var, void *val_ptr);
+
+  #if HAS_PID_HEATING
+    // Hook for "Change this temperature PID para"
+    static void HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr);
+    // Hook for PID autotune
+    static void HandlePIDAutotune(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if HAS_BED_PROBE
+    // Hook for "Change probe offset z"
+    static void HandleProbeOffsetZChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if ENABLED(BABYSTEPPING)
+    // Hook for live z adjust action
+    static void HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if HAS_FAN
+    // Hook for fan control
+    static void HandleFanControl(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for heater control
+  static void HandleHeaterControl(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(DGUS_PREHEAT_UI)
+    // Hook for preheat
+    static void HandlePreheat(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+    // Hook for filament load and unload filament option
+    static void HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr);
+    // Hook for filament load and unload
+    static void HandleFilamentLoadUnload(DGUS_VP_Variable &var);
+
+    static void MKS_FilamentLoadUnload(DGUS_VP_Variable &var, void *val_ptr, const int filamentDir);
+    static void MKS_FilamentLoad(DGUS_VP_Variable &var, void *val_ptr);
+    static void MKS_FilamentUnLoad(DGUS_VP_Variable &var, void *val_ptr);
+    static void MKS_LOAD_UNLOAD_IDLE();
+    static void MKS_LOAD_Cancle(DGUS_VP_Variable &var, void *val_ptr);
+    static void GetManualFilament(DGUS_VP_Variable &var, void *val_ptr);
+    static void GetManualFilamentSpeed(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+
+  #if ENABLED(SDSUPPORT)
+    // Callback for VP "Display wants to change screen when there is a SD card"
+    static void ScreenChangeHookIfSD(DGUS_VP_Variable &var, void *val_ptr);
+    // Scroll buttons on the file listing screen.
+    static void DGUSLCD_SD_ScrollFilelist(DGUS_VP_Variable &var, void *val_ptr);
+    // File touched.
+    static void DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr);
+    // start print after confirmation received.
+    static void DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr);
+    // User hit the pause, resume or abort button.
+    static void DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr);
+    // User confirmed the abort action
+    static void DGUSLCD_SD_ReallyAbort(DGUS_VP_Variable &var, void *val_ptr);
+    // User hit the tune button
+    static void DGUSLCD_SD_PrintTune(DGUS_VP_Variable &var, void *val_ptr);
+    // Send a single filename to the display.
+    static void DGUSLCD_SD_SendFilename(DGUS_VP_Variable &var);
+    // Marlin informed us that a new SD has been inserted.
+    static void SDCardInserted();
+    // Marlin informed us that the SD Card has been removed().
+    static void SDCardRemoved();
+    // Marlin informed us about a bad SD Card.
+    static void SDCardError();
+    // Marlin informed us about SD print completion.
+    static void SDPrintingFinished();
+  #else
+    static void PrintReturn(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+
+  // OK Button the Confirm screen.
+  static void ScreenConfirmedOK(DGUS_VP_Variable &var, void *val_ptr);
+
+  // Update data after went to new screen (by display or by GotoScreen)
+  // remember: store the last-displayed screen, so it can get returned to.
+  // (e.g for pop up messages)
+  static void UpdateNewScreen(DGUSLCD_Screens newscreen, bool popup=false);
+
+  // Recall the remembered screen.
+  static void PopToOldScreen();
+
+  // Make the display show the screen and update all VPs in it.
+  static void GotoScreen(DGUSLCD_Screens screen, bool ispopup = false);
+
+  static void UpdateScreenVPData();
+
+  // Helpers to convert and transfer data to the display.
+  static void DGUSLCD_SendWordValueToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplayPGM(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendTemperaturePID(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPercentageToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPrintProgressToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPrintTimeToDisplay(DGUS_VP_Variable &var);
+
+  static void DGUSLCD_SendPrintTimeToDisplay_MKS(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendBabyStepToDisplay_MKS(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendFanToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendGbkToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplay_Language_MKS(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendTMCStepValue(DGUS_VP_Variable &var);
+
+  #if ENABLED(PRINTCOUNTER)
+    static void DGUSLCD_SendPrintAccTimeToDisplay(DGUS_VP_Variable &var);
+    static void DGUSLCD_SendPrintsTotalToDisplay(DGUS_VP_Variable &var);
+  #endif
+  #if HAS_FAN
+    static void DGUSLCD_SendFanStatusToDisplay(DGUS_VP_Variable &var);
+  #endif
+  static void DGUSLCD_SendHeaterStatusToDisplay(DGUS_VP_Variable &var);
+  #if ENABLED(DGUS_UI_WAITING)
+    static void DGUSLCD_SendWaitingStatusToDisplay(DGUS_VP_Variable &var);
+  #endif
+
+  // Send a value from 0..100 to a variable with a range from 0..255
+  static void DGUSLCD_PercentageToUint8(DGUS_VP_Variable &var, void *val_ptr);
+
+  static void DGUSLCD_SetUint8(DGUS_VP_Variable &var, void *val_ptr);
+
+  template<typename T>
+  static void DGUSLCD_SetValueDirectly(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!var.memadr) return;
+    union { unsigned char tmp[sizeof(T)]; T t; } x;
+    unsigned char *ptr = (unsigned char*)val_ptr;
+    LOOP_L_N(i, sizeof(T)) x.tmp[i] = ptr[sizeof(T) - i - 1];
+    *(T*)var.memadr = x.t;
+  }
+
+  // Send a float value to the display.
+  // Display will get a 4-byte integer scaled to the number of digits:
+  // Tell the display the number of digits and it cheats by displaying a dot between...
+  template<unsigned int decimals>
+  static void DGUSLCD_SendFloatAsLongValueToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      float f = *(float *)var.memadr;
+      f *= cpow(10, decimals);
+      dgusdisplay.WriteVariable(var.VP, (long)f);
+    }
+  }
+
+  // Send a float value to the display.
+  // Display will get a 2-byte integer scaled to the number of digits:
+  // Tell the display the number of digits and it cheats by displaying a dot between...
+  template<unsigned int decimals>
+  static void DGUSLCD_SendFloatAsIntValueToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      float f = *(float *)var.memadr;
+      DEBUG_ECHOLNPAIR_F(" >> ", f, 6);
+      f *= cpow(10, decimals);
+      dgusdisplay.WriteVariable(var.VP, (int16_t)f);
+    }
+  }
+
+  // Force an update of all VP on the current screen.
+  static inline void ForceCompleteUpdate() { update_ptr = 0; ScreenComplete = false; }
+  // Has all VPs sent to the screen
+  static inline bool IsScreenComplete() { return ScreenComplete; }
+
+  static inline DGUSLCD_Screens getCurrentScreen() { return current_screen; }
+
+  static inline void SetupConfirmAction( void (*f)()) { confirm_action_cb = f; }
+
+private:
+  static DGUSLCD_Screens current_screen;  //< currently on screen
+  static constexpr uint8_t NUM_PAST_SCREENS = 4;
+  static DGUSLCD_Screens past_screens[NUM_PAST_SCREENS]; //< LIFO with past screens for the "back" button.
+
+  static uint8_t update_ptr;      //< Last sent entry in the VPList for the actual screen.
+  static uint16_t skipVP;         //< When updating the screen data, skip this one, because the user is interacting with it.
+  static bool ScreenComplete;     //< All VPs sent to screen?
+
+  static uint16_t ConfirmVP;      //< context for confirm screen (VP that will be emulated-sent on "OK").
+
+  #if ENABLED(SDSUPPORT)
+    static int16_t top_file;      //< file on top of file chooser
+    static int16_t file_to_print; //< touched file to be confirmed
+  #endif
+
+  static void (*confirm_action_cb)();
+};
+
+#define MKS_Language_Choose   0x00
+#define MKS_Language_NoChoose 0x01
+
+#define MKS_SimpleChinese     0
+#define MKS_English           1
+extern uint8_t mks_language_index;
+extern bool DGUSAutoTurnOff;
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+  #define PLR_SCREEN_RECOVER MKSLCD_SCREEN_PRINT
+  #define PLR_SCREEN_CANCEL MKSLCD_SCREEN_HOME
+#endif

Marlin/src/lcd/extui/dgus/origin/DGUSDisplayDef.cpp

@@ -0,0 +1,312 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * lcd/extui/dgus/origin/DGUSDisplayDef.cpp
+ */
+
+#include "../../../../inc/MarlinConfigPre.h"
+
+#if ENABLED(DGUS_LCD_UI_ORIGIN)
+
+#include "DGUSDisplayDef.h"
+#include "../DGUSDisplay.h"
+#include "../DGUSScreenHandler.h"
+
+#include "../../../../module/temperature.h"
+#include "../../../../module/motion.h"
+#include "../../../../module/planner.h"
+
+#include "../../../marlinui.h"
+#include "../../ui_api.h"
+
+#if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+  uint16_t distanceToMove = 10;
+#endif
+using namespace ExtUI;
+
+const uint16_t VPList_Boot[] PROGMEM = {
+  VP_MARLIN_VERSION,
+  0x0000
+};
+
+const uint16_t VPList_Main[] PROGMEM = {
+  /* VP_M117, for completeness, but it cannot be auto-uploaded. */
+  0x0000
+};
+
+const uint16_t VPList_Temp[] PROGMEM = {
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  0x0000
+};
+
+const uint16_t VPList_Status[] PROGMEM = {
+  /* VP_M117, for completeness, but it cannot be auto-uploaded */
+  #if HOTENDS >= 1
+    VP_T_E0_Is, VP_T_E0_Set,
+  #endif
+  #if HOTENDS >= 2
+    VP_T_E1_Is, VP_T_E1_Set,
+  #endif
+  #if HAS_HEATED_BED
+    VP_T_Bed_Is, VP_T_Bed_Set,
+  #endif
+  #if HAS_FAN
+    VP_Fan0_Percentage,
+  #endif
+  VP_XPos, VP_YPos, VP_ZPos,
+  VP_Fan0_Percentage,
+  VP_Feedrate_Percentage,
+  VP_PrintProgress_Percentage,
+  0x0000
+};
+
+const uint16_t VPList_Status2[] PROGMEM = {
+  // VP_M117, for completeness, but it cannot be auto-uploaded
+  #if HOTENDS >= 1
+    VP_Flowrate_E0,
+  #endif
+  #if HOTENDS >= 2
+    VP_Flowrate_E1,
+  #endif
+  VP_PrintProgress_Percentage,
+  VP_PrintTime,
+  0x0000
+};
+
+const uint16_t VPList_ManualMove[] PROGMEM = {
+  VP_XPos, VP_YPos, VP_ZPos,
+  0x0000
+};
+
+const uint16_t VPList_ManualExtrude[] PROGMEM = {
+  VP_EPos,
+  0x0000
+};
+
+const uint16_t VPList_FanAndFeedrate[] PROGMEM = {
+  VP_Feedrate_Percentage, VP_Fan0_Percentage,
+  0x0000
+};
+
+const uint16_t VPList_SD_FlowRates[] PROGMEM = {
+  VP_Flowrate_E0, VP_Flowrate_E1,
+  0x0000
+};
+
+const uint16_t VPList_SDFileList[] PROGMEM = {
+  VP_SD_FileName0, VP_SD_FileName1, VP_SD_FileName2, VP_SD_FileName3, VP_SD_FileName4,
+  0x0000
+};
+
+const uint16_t VPList_SD_PrintManipulation[] PROGMEM = {
+  VP_PrintProgress_Percentage, VP_PrintTime,
+  0x0000
+};
+
+const struct VPMapping VPMap[] PROGMEM = {
+  { DGUSLCD_SCREEN_BOOT, VPList_Boot },
+  { DGUSLCD_SCREEN_MAIN, VPList_Main },
+  { DGUSLCD_SCREEN_TEMPERATURE, VPList_Temp },
+  { DGUSLCD_SCREEN_STATUS, VPList_Status },
+  { DGUSLCD_SCREEN_STATUS2, VPList_Status2 },
+  { DGUSLCD_SCREEN_MANUALMOVE, VPList_ManualMove },
+  { DGUSLCD_SCREEN_MANUALEXTRUDE, VPList_ManualExtrude },
+  { DGUSLCD_SCREEN_FANANDFEEDRATE, VPList_FanAndFeedrate },
+  { DGUSLCD_SCREEN_FLOWRATES, VPList_SD_FlowRates },
+  { DGUSLCD_SCREEN_SDPRINTMANIPULATION, VPList_SD_PrintManipulation },
+  { DGUSLCD_SCREEN_SDFILELIST, VPList_SDFileList },
+  { 0 , nullptr } // List is terminated with an nullptr as table entry.
+};
+
+const char MarlinVersion[] PROGMEM = SHORT_BUILD_VERSION;
+
+// Helper to define a DGUS_VP_Variable for common use cases.
+#define VPHELPER(VPADR, VPADRVAR, RXFPTR, TXFPTR ) { .VP=VPADR, .memadr=VPADRVAR, .size=sizeof(VPADRVAR), \
+  .set_by_display_handler = RXFPTR, .send_to_display_handler = TXFPTR }
+
+// Helper to define a DGUS_VP_Variable when the sizeo of the var cannot be determined automaticalyl (eg. a string)
+#define VPHELPER_STR(VPADR, VPADRVAR, STRLEN, RXFPTR, TXFPTR ) { .VP=VPADR, .memadr=VPADRVAR, .size=STRLEN, \
+  .set_by_display_handler = RXFPTR, .send_to_display_handler = TXFPTR }
+
+const struct DGUS_VP_Variable ListOfVP[] PROGMEM = {
+  // Helper to detect touch events
+  VPHELPER(VP_SCREENCHANGE, nullptr, ScreenHandler.ScreenChangeHook, nullptr),
+  VPHELPER(VP_SCREENCHANGE_ASK, nullptr, ScreenHandler.ScreenChangeHookIfIdle, nullptr),
+  #if ENABLED(SDSUPPORT)
+    VPHELPER(VP_SCREENCHANGE_WHENSD, nullptr, ScreenHandler.ScreenChangeHookIfSD, nullptr),
+  #endif
+  VPHELPER(VP_CONFIRMED, nullptr, ScreenHandler.ScreenConfirmedOK, nullptr),
+
+  VPHELPER(VP_TEMP_ALL_OFF, nullptr, &ScreenHandler.HandleAllHeatersOff, nullptr),
+
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    VPHELPER(VP_MOVE_OPTION, &distanceToMove, &ScreenHandler.HandleManualMoveOption, nullptr),
+  #endif
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    VPHELPER(VP_MOVE_X, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, &distanceToMove, &ScreenHandler.HandleManualMove, nullptr),
+  #else
+    VPHELPER(VP_MOVE_X, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Y, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_MOVE_Z, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+    VPHELPER(VP_HOME_ALL, nullptr, &ScreenHandler.HandleManualMove, nullptr),
+  #endif
+
+  VPHELPER(VP_MOTOR_LOCK_UNLOK, nullptr, &ScreenHandler.HandleMotorLockUnlock, nullptr),
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    VPHELPER(VP_POWER_LOSS_RECOVERY, nullptr, &ScreenHandler.HandlePowerLossRecovery, nullptr),
+  #endif
+  VPHELPER(VP_SETTINGS, nullptr, &ScreenHandler.HandleSettings, nullptr),
+
+  { .VP = VP_MARLIN_VERSION, .memadr = (void*)MarlinVersion, .size = VP_MARLIN_VERSION_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  // M117 LCD String (We don't need the string in memory but "just" push it to the display on demand, hence the nullptr
+  { .VP = VP_M117, .memadr = nullptr, .size = VP_M117_LEN, .set_by_display_handler = nullptr, .send_to_display_handler =&ScreenHandler.DGUSLCD_SendStringToDisplay },
+
+  // Temperature Data
+  #if HOTENDS >= 1
+    VPHELPER(VP_T_E0_Is, nullptr, nullptr, SET_VARIABLE(getActualTemp_celsius, E0, long)),
+    VPHELPER(VP_T_E0_Set, nullptr, GET_VARIABLE(setTargetTemp_celsius, E0),
+                                   SET_VARIABLE(getTargetTemp_celsius, E0)),
+    VPHELPER(VP_Flowrate_E0, nullptr, ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_EPos, &destination.e, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+    VPHELPER(VP_MOVE_E0, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E0_CONTROL, &thermalManager.temp_hotend[0].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E0_STATUS, &thermalManager.temp_hotend[0].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+    #if ENABLED(DGUS_PREHEAT_UI)
+      VPHELPER(VP_E0_BED_PREHEAT, nullptr, &ScreenHandler.HandlePreheat, nullptr),
+    #endif
+    #if ENABLED(PIDTEMP)
+      VPHELPER(VP_E0_PID_P, &thermalManager.temp_hotend[0].pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_I, &thermalManager.temp_hotend[0].pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_E0_PID_D, &thermalManager.temp_hotend[0].pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_PID_AUTOTUNE_E0, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
+    #endif
+    #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+      VPHELPER(VP_E0_FILAMENT_LOAD_UNLOAD, nullptr, &ScreenHandler.HandleFilamentOption, &ScreenHandler.HandleFilamentLoadUnload),
+    #endif
+  #endif
+  #if HOTENDS >= 2
+    VPHELPER(VP_T_E1_Is, &thermalManager.temp_hotend[1].celsius, nullptr, DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_E1_Set, &thermalManager.temp_hotend[1].target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_Flowrate_E1, nullptr, ScreenHandler.HandleFlowRateChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_MOVE_E1, nullptr, &ScreenHandler.HandleManualExtrude, nullptr),
+    VPHELPER(VP_E1_CONTROL, &thermalManager.temp_hotend[1].target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_E1_STATUS, &thermalManager.temp_hotend[1].target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+    #if ENABLED(PIDTEMP)
+      VPHELPER(VP_PID_AUTOTUNE_E1, nullptr, &ScreenHandler.HandlePIDAutotune, nullptr),
+    #endif
+  #endif
+  #if HAS_HEATED_BED
+    VPHELPER(VP_T_Bed_Is, &thermalManager.temp_bed.celsius, nullptr, ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_T_Bed_Set, &thermalManager.temp_bed.target, ScreenHandler.HandleTemperatureChanged, &ScreenHandler.DGUSLCD_SendWordValueToDisplay),
+    VPHELPER(VP_BED_CONTROL, &thermalManager.temp_bed.target, &ScreenHandler.HandleHeaterControl, nullptr),
+    VPHELPER(VP_BED_STATUS, &thermalManager.temp_bed.target, nullptr, &ScreenHandler.DGUSLCD_SendHeaterStatusToDisplay),
+    #if ENABLED(PIDTEMPBED)
+      VPHELPER(VP_BED_PID_P, &thermalManager.temp_bed.pid.Kp, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_I, &thermalManager.temp_bed.pid.Ki, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+      VPHELPER(VP_BED_PID_D, &thermalManager.temp_bed.pid.Kd, ScreenHandler.HandleTemperaturePIDChanged, ScreenHandler.DGUSLCD_SendTemperaturePID),
+    #endif
+  #endif
+
+  // Fan Data
+  #if HAS_FAN
+    #define FAN_VPHELPER(N) \
+      VPHELPER(VP_Fan##N##_Percentage, &thermalManager.fan_speed[N], ScreenHandler.DGUSLCD_PercentageToUint8, &ScreenHandler.DGUSLCD_SendPercentageToDisplay), \
+      VPHELPER(VP_FAN##N##_CONTROL, &thermalManager.fan_speed[N], &ScreenHandler.HandleFanControl, nullptr), \
+      VPHELPER(VP_FAN##N##_STATUS, &thermalManager.fan_speed[N], nullptr, &ScreenHandler.DGUSLCD_SendFanStatusToDisplay),
+    REPEAT(FAN_COUNT, FAN_VPHELPER)
+  #endif
+
+  // Feedrate
+  VPHELPER(VP_Feedrate_Percentage, &feedrate_percentage, ScreenHandler.DGUSLCD_SetValueDirectly<int16_t>, &ScreenHandler.DGUSLCD_SendWordValueToDisplay ),
+
+  // Position Data
+  VPHELPER(VP_XPos, &current_position.x, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_YPos, &current_position.y, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+  VPHELPER(VP_ZPos, &current_position.z, nullptr, ScreenHandler.DGUSLCD_SendFloatAsLongValueToDisplay<2>),
+
+  // Print Progress
+  VPHELPER(VP_PrintProgress_Percentage, nullptr, nullptr, ScreenHandler.DGUSLCD_SendPrintProgressToDisplay ),
+
+  // Print Time
+  VPHELPER_STR(VP_PrintTime, nullptr, VP_PrintTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintTimeToDisplay ),
+  #if ENABLED(PRINTCOUNTER)
+    VPHELPER_STR(VP_PrintAccTime, nullptr, VP_PrintAccTime_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintAccTimeToDisplay ),
+    VPHELPER_STR(VP_PrintsTotal, nullptr, VP_PrintsTotal_LEN, nullptr, ScreenHandler.DGUSLCD_SendPrintsTotalToDisplay ),
+  #endif
+
+  VPHELPER(VP_X_STEP_PER_MM, &planner.settings.axis_steps_per_mm[X_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Y_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Y_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  VPHELPER(VP_Z_STEP_PER_MM, &planner.settings.axis_steps_per_mm[Z_AXIS], ScreenHandler.HandleStepPerMMChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  #if HOTENDS >= 1
+    VPHELPER(VP_E0_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(0)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  #endif
+  #if HOTENDS >= 2
+    VPHELPER(VP_E1_STEP_PER_MM, &planner.settings.axis_steps_per_mm[E_AXIS_N(1)], ScreenHandler.HandleStepPerMMExtruderChanged, ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<1>),
+  #endif
+
+  // SDCard File listing.
+  #if ENABLED(SDSUPPORT)
+    VPHELPER(VP_SD_ScrollEvent, nullptr, ScreenHandler.DGUSLCD_SD_ScrollFilelist, nullptr),
+    VPHELPER(VP_SD_FileSelected, nullptr, ScreenHandler.DGUSLCD_SD_FileSelected, nullptr),
+    VPHELPER(VP_SD_FileSelectConfirm, nullptr, ScreenHandler.DGUSLCD_SD_StartPrint, nullptr),
+    VPHELPER_STR(VP_SD_FileName0,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName1,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName2,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName3,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER_STR(VP_SD_FileName4,  nullptr, VP_SD_FileName_LEN, nullptr, ScreenHandler.DGUSLCD_SD_SendFilename ),
+    VPHELPER(VP_SD_ResumePauseAbort, nullptr, ScreenHandler.DGUSLCD_SD_ResumePauseAbort, nullptr),
+    VPHELPER(VP_SD_AbortPrintConfirmed, nullptr, ScreenHandler.DGUSLCD_SD_ReallyAbort, nullptr),
+    VPHELPER(VP_SD_Print_Setting, nullptr, ScreenHandler.DGUSLCD_SD_PrintTune, nullptr),
+    #if HAS_BED_PROBE
+      VPHELPER(VP_SD_Print_ProbeOffsetZ, &probe.offset.z, ScreenHandler.HandleProbeOffsetZChanged, &ScreenHandler.DGUSLCD_SendFloatAsIntValueToDisplay<2>),
+      #if ENABLED(BABYSTEPPING)
+        VPHELPER(VP_SD_Print_LiveAdjustZ, nullptr, ScreenHandler.HandleLiveAdjustZ, nullptr),
+      #endif
+    #endif
+  #endif
+
+  #if ENABLED(DGUS_UI_WAITING)
+    VPHELPER(VP_WAITING_STATUS, nullptr, nullptr, ScreenHandler.DGUSLCD_SendWaitingStatusToDisplay),
+  #endif
+
+  // Messages for the User, shared by the popup and the kill screen. They cant be autouploaded as we do not buffer content.
+  { .VP = VP_MSGSTR1, .memadr = nullptr, .size = VP_MSGSTR1_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR2, .memadr = nullptr, .size = VP_MSGSTR2_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR3, .memadr = nullptr, .size = VP_MSGSTR3_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+  { .VP = VP_MSGSTR4, .memadr = nullptr, .size = VP_MSGSTR4_LEN, .set_by_display_handler = nullptr, .send_to_display_handler = &ScreenHandler.DGUSLCD_SendStringToDisplayPGM },
+
+  VPHELPER(0, 0, 0, 0)  // must be last entry.
+};
+
+#endif // DGUS_LCD_UI_ORIGIN

Marlin/src/lcd/extui/dgus/origin/DGUSDisplayDef.h

@@ -0,0 +1,282 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../DGUSDisplayDef.h"
+
+enum DGUSLCD_Screens : uint8_t {
+  DGUSLCD_SCREEN_BOOT                = 0,
+  DGUSLCD_SCREEN_MAIN                = 10,
+  DGUSLCD_SCREEN_TEMPERATURE         = 20,
+  DGUSLCD_SCREEN_STATUS              = 30,
+  DGUSLCD_SCREEN_STATUS2             = 32,
+  DGUSLCD_SCREEN_MANUALMOVE          = 40,
+  DGUSLCD_SCREEN_MANUALEXTRUDE       = 42,
+  DGUSLCD_SCREEN_FANANDFEEDRATE      = 44,
+  DGUSLCD_SCREEN_FLOWRATES           = 46,
+  DGUSLCD_SCREEN_SDFILELIST          = 50,
+  DGUSLCD_SCREEN_SDPRINTMANIPULATION = 52,
+  DGUSLCD_SCREEN_POWER_LOSS          = 100,
+  DGUSLCD_SCREEN_PREHEAT             = 120,
+  DGUSLCD_SCREEN_UTILITY             = 110,
+  DGUSLCD_SCREEN_FILAMENT_HEATING    = 146,
+  DGUSLCD_SCREEN_FILAMENT_LOADING    = 148,
+  DGUSLCD_SCREEN_FILAMENT_UNLOADING  = 158,
+  DGUSLCD_SCREEN_SDPRINTTUNE         = 170,
+  DGUSLCD_SCREEN_CONFIRM             = 240,
+  DGUSLCD_SCREEN_KILL                = 250, ///< Kill Screen. Must always be 250 (to be able to display "Error wrong LCD Version")
+  DGUSLCD_SCREEN_WAITING             = 251,
+  DGUSLCD_SCREEN_POPUP               = 252, ///< special target, popup screen will also return this code to say "return to previous screen"
+  DGUSLDC_SCREEN_UNUSED              = 255
+};
+
+// Display Memory layout used (T5UID)
+// Except system variables this is arbitrary, just to organize stuff....
+
+// 0x0000 .. 0x0FFF  -- System variables and reserved by the display
+// 0x1000 .. 0x1FFF  -- Variables to never change location, regardless of UI Version
+// 0x2000 .. 0x2FFF  -- Controls (VPs that will trigger some action)
+// 0x3000 .. 0x4FFF  -- Marlin Data to be displayed
+// 0x5000 ..         -- SPs (if we want to modify display elements, e.g change color or like) -- currently unused
+
+// As there is plenty of space (at least most displays have >8k RAM), we do not pack them too tight,
+// so that we can keep variables nicely together in the address space.
+
+// UI Version always on 0x1000...0x1002 so that the firmware can check this and bail out.
+constexpr uint16_t VP_UI_VERSION_MAJOR = 0x1000;  // Major -- incremented when incompatible
+constexpr uint16_t VP_UI_VERSION_MINOR = 0x1001;  // Minor -- incremented on new features, but compatible
+constexpr uint16_t VP_UI_VERSION_PATCH = 0x1002;  // Patch -- fixed which do not change functionality.
+constexpr uint16_t VP_UI_FLAVOUR       = 0x1010;  // lets reserve 16 bytes here to determine if UI is suitable for this Marlin. tbd.
+
+// Storage space for the Killscreen messages. 0x1100 - 0x1200 . Reused for the popup.
+constexpr uint16_t VP_MSGSTR1 = 0x1100;
+constexpr uint8_t VP_MSGSTR1_LEN = 0x20;  // might be more place for it...
+constexpr uint16_t VP_MSGSTR2 = 0x1140;
+constexpr uint8_t VP_MSGSTR2_LEN = 0x20;
+constexpr uint16_t VP_MSGSTR3 = 0x1180;
+constexpr uint8_t VP_MSGSTR3_LEN = 0x20;
+constexpr uint16_t VP_MSGSTR4 = 0x11C0;
+constexpr uint8_t VP_MSGSTR4_LEN = 0x20;
+
+// Screenchange request for screens that only make sense when printer is idle.
+// e.g movement is only allowed if printer is not printing.
+// Marlin must confirm by setting the screen manually.
+constexpr uint16_t VP_SCREENCHANGE_ASK = 0x2000;
+constexpr uint16_t VP_SCREENCHANGE = 0x2001;   // Key-Return button to new menu pressed. Data contains target screen in low byte and info in high byte.
+constexpr uint16_t VP_TEMP_ALL_OFF = 0x2002;   // Turn all heaters off. Value arbitrary ;)=
+constexpr uint16_t VP_SCREENCHANGE_WHENSD = 0x2003; // "Print" Button touched -- go only there if there is an SD Card.
+
+constexpr uint16_t VP_CONFIRMED = 0x2010; // OK on confirm screen.
+
+// Buttons on the SD-Card File listing.
+constexpr uint16_t VP_SD_ScrollEvent = 0x2020; // Data: 0 for "up a directory", numbers are the amount to scroll, e.g -1 one up, 1 one down
+constexpr uint16_t VP_SD_FileSelected = 0x2022; // Number of file field selected.
+constexpr uint16_t VP_SD_FileSelectConfirm = 0x2024; // (This is a virtual VP and emulated by the Confirm Screen when a file has been confirmed)
+
+constexpr uint16_t VP_SD_ResumePauseAbort = 0x2026; // Resume(Data=0), Pause(Data=1), Abort(Data=2) SD Card prints
+constexpr uint16_t VP_SD_AbortPrintConfirmed = 0x2028; // Abort print confirmation (virtual, will be injected by the confirm dialog)
+constexpr uint16_t VP_SD_Print_Setting = 0x2040;
+constexpr uint16_t VP_SD_Print_LiveAdjustZ = 0x2050; // Data: 0 down, 1 up
+
+// Controls for movement (we can't use the incremental / decremental feature of the display at this feature works only with 16 bit values
+// (which would limit us to 655.35mm, which is likely not a problem for common setups, but i don't want to rule out hangprinters support)
+// A word about the coding: The VP will be per axis and the return code will be an signed 16 bit value in 0.01 mm resolution, telling us
+// the relative travel amount t he user wants to do. So eg. if the display sends us VP=2100 with value 100, the user wants us to move X by +1 mm.
+constexpr uint16_t VP_MOVE_X = 0x2100;
+constexpr uint16_t VP_MOVE_Y = 0x2102;
+constexpr uint16_t VP_MOVE_Z = 0x2104;
+constexpr uint16_t VP_MOVE_E0 = 0x2110;
+constexpr uint16_t VP_MOVE_E1 = 0x2112;
+//constexpr uint16_t VP_MOVE_E2 = 0x2114;
+//constexpr uint16_t VP_MOVE_E3 = 0x2116;
+//constexpr uint16_t VP_MOVE_E4 = 0x2118;
+//constexpr uint16_t VP_MOVE_E5 = 0x211A;
+constexpr uint16_t VP_HOME_ALL = 0x2120;
+constexpr uint16_t VP_MOTOR_LOCK_UNLOK = 0x2130;
+
+// Power loss recovery
+constexpr uint16_t VP_POWER_LOSS_RECOVERY = 0x2180;
+
+// Fan Control Buttons , switch between "off" and "on"
+constexpr uint16_t VP_FAN0_CONTROL = 0x2200;
+constexpr uint16_t VP_FAN1_CONTROL = 0x2202;
+//constexpr uint16_t VP_FAN2_CONTROL = 0x2204;
+//constexpr uint16_t VP_FAN3_CONTROL = 0x2206;
+
+// Heater Control Buttons , triged between "cool down" and "heat PLA" state
+constexpr uint16_t VP_E0_CONTROL = 0x2210;
+constexpr uint16_t VP_E1_CONTROL = 0x2212;
+//constexpr uint16_t VP_E2_CONTROL = 0x2214;
+//constexpr uint16_t VP_E3_CONTROL = 0x2216;
+//constexpr uint16_t VP_E4_CONTROL = 0x2218;
+//constexpr uint16_t VP_E5_CONTROL = 0x221A;
+constexpr uint16_t VP_BED_CONTROL = 0x221C;
+
+// Preheat
+constexpr uint16_t VP_E0_BED_PREHEAT = 0x2220;
+constexpr uint16_t VP_E1_BED_CONTROL = 0x2222;
+//constexpr uint16_t VP_E2_BED_CONTROL = 0x2224;
+//constexpr uint16_t VP_E3_BED_CONTROL = 0x2226;
+//constexpr uint16_t VP_E4_BED_CONTROL = 0x2228;
+//constexpr uint16_t VP_E5_BED_CONTROL = 0x222A;
+
+// Filament load and unload
+constexpr uint16_t VP_E0_FILAMENT_LOAD_UNLOAD = 0x2300;
+constexpr uint16_t VP_E1_FILAMENT_LOAD_UNLOAD = 0x2302;
+
+// Settings store , reset
+constexpr uint16_t VP_SETTINGS = 0x2400;
+
+// PID autotune
+constexpr uint16_t VP_PID_AUTOTUNE_E0 = 0x2410;
+//constexpr uint16_t VP_PID_AUTOTUNE_E1 = 0x2412;
+//constexpr uint16_t VP_PID_AUTOTUNE_E2 = 0x2414;
+//constexpr uint16_t VP_PID_AUTOTUNE_E3 = 0x2416;
+//constexpr uint16_t VP_PID_AUTOTUNE_E4 = 0x2418;
+//constexpr uint16_t VP_PID_AUTOTUNE_E5 = 0x241A;
+constexpr uint16_t VP_PID_AUTOTUNE_BED = 0x2420;
+
+// Firmware version on the boot screen.
+constexpr uint16_t VP_MARLIN_VERSION = 0x3000;
+constexpr uint8_t VP_MARLIN_VERSION_LEN = 16;   // there is more space on the display, if needed.
+
+// Place for status messages.
+constexpr uint16_t VP_M117 = 0x3020;
+constexpr uint8_t VP_M117_LEN = 0x20;
+
+// Temperatures.
+constexpr uint16_t VP_T_E0_Is = 0x3060;  // 4 Byte Integer
+constexpr uint16_t VP_T_E0_Set = 0x3062; // 2 Byte Integer
+constexpr uint16_t VP_T_E1_Is = 0x3064;  // 4 Byte Integer
+
+// reserved to support up to 6 Extruders:
+//constexpr uint16_t VP_T_E1_Set = 0x3066; // 2 Byte Integer
+//constexpr uint16_t VP_T_E2_Is = 0x3068;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E2_Set = 0x306A; // 2 Byte Integer
+//constexpr uint16_t VP_T_E3_Is = 0x306C;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E3_Set = 0x306E; // 2 Byte Integer
+//constexpr uint16_t VP_T_E4_Is = 0x3070;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E4_Set = 0x3072; // 2 Byte Integer
+//constexpr uint16_t VP_T_E4_Is = 0x3074;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E4_Set = 0x3076; // 2 Byte Integer
+//constexpr uint16_t VP_T_E5_Is = 0x3078;  // 4 Byte Integer
+//constexpr uint16_t VP_T_E5_Set = 0x307A; // 2 Byte Integer
+
+constexpr uint16_t VP_T_Bed_Is = 0x3080;  // 4 Byte Integer
+constexpr uint16_t VP_T_Bed_Set = 0x3082; // 2 Byte Integer
+
+constexpr uint16_t VP_Flowrate_E0 = 0x3090; // 2 Byte Integer
+constexpr uint16_t VP_Flowrate_E1 = 0x3092; // 2 Byte Integer
+
+// reserved for up to 6 Extruders:
+//constexpr uint16_t VP_Flowrate_E2 = 0x3094;
+//constexpr uint16_t VP_Flowrate_E3 = 0x3096;
+//constexpr uint16_t VP_Flowrate_E4 = 0x3098;
+//constexpr uint16_t VP_Flowrate_E5 = 0x309A;
+
+constexpr uint16_t VP_Fan0_Percentage = 0x3100;  // 2 Byte Integer (0..100)
+constexpr uint16_t VP_Fan1_Percentage = 0x33A2;  // 2 Byte Integer (0..100)
+//constexpr uint16_t VP_Fan2_Percentage = 0x33A4;  // 2 Byte Integer (0..100)
+//constexpr uint16_t VP_Fan3_Percentage = 0x33A6;  // 2 Byte Integer (0..100)
+
+constexpr uint16_t VP_Feedrate_Percentage = 0x3102; // 2 Byte Integer (0..100)
+constexpr uint16_t VP_PrintProgress_Percentage = 0x3104; // 2 Byte Integer (0..100)
+
+constexpr uint16_t VP_PrintTime = 0x3106;
+constexpr uint16_t VP_PrintTime_LEN = 10;
+
+constexpr uint16_t VP_PrintAccTime = 0x3160;
+constexpr uint16_t VP_PrintAccTime_LEN = 32;
+
+constexpr uint16_t VP_PrintsTotal = 0x3180;
+constexpr uint16_t VP_PrintsTotal_LEN = 16;
+
+// Actual Position
+constexpr uint16_t VP_XPos = 0x3110;  // 4 Byte Fixed point number; format xxx.yy
+constexpr uint16_t VP_YPos = 0x3112;  // 4 Byte Fixed point number; format xxx.yy
+constexpr uint16_t VP_ZPos = 0x3114;  // 4 Byte Fixed point number; format xxx.yy
+
+constexpr uint16_t VP_EPos = 0x3120;  // 4 Byte Fixed point number; format xxx.yy
+
+// SDCard File Listing
+constexpr uint16_t VP_SD_FileName_LEN = 32; // LEN is shared for all entries.
+constexpr uint16_t DGUS_SD_FILESPERSCREEN = 5; // FIXME move that info to the display and read it from there.
+constexpr uint16_t VP_SD_FileName0 = 0x3200;
+constexpr uint16_t VP_SD_FileName1 = 0x3220;
+constexpr uint16_t VP_SD_FileName2 = 0x3240;
+constexpr uint16_t VP_SD_FileName3 = 0x3260;
+constexpr uint16_t VP_SD_FileName4 = 0x3280;
+
+constexpr uint16_t VP_SD_Print_ProbeOffsetZ = 0x32A0; //
+constexpr uint16_t VP_SD_Print_Filename = 0x32C0; //
+
+// Fan status
+constexpr uint16_t VP_FAN0_STATUS = 0x3300;
+constexpr uint16_t VP_FAN1_STATUS = 0x3302;
+//constexpr uint16_t VP_FAN2_STATUS = 0x3304;
+//constexpr uint16_t VP_FAN3_STATUS = 0x3306;
+
+// Heater status
+constexpr uint16_t VP_E0_STATUS = 0x3310;
+//constexpr uint16_t VP_E1_STATUS = 0x3312;
+//constexpr uint16_t VP_E2_STATUS = 0x3314;
+//constexpr uint16_t VP_E3_STATUS = 0x3316;
+//constexpr uint16_t VP_E4_STATUS = 0x3318;
+//constexpr uint16_t VP_E5_STATUS = 0x331A;
+constexpr uint16_t VP_BED_STATUS = 0x331C;
+
+constexpr uint16_t VP_MOVE_OPTION = 0x3400;
+
+// Step per mm
+constexpr uint16_t VP_X_STEP_PER_MM = 0x3600; // at the moment , 2 byte unsigned int , 0~1638.4
+//constexpr uint16_t VP_X2_STEP_PER_MM = 0x3602;
+constexpr uint16_t VP_Y_STEP_PER_MM = 0x3604;
+//constexpr uint16_t VP_Y2_STEP_PER_MM = 0x3606;
+constexpr uint16_t VP_Z_STEP_PER_MM = 0x3608;
+//constexpr uint16_t VP_Z2_STEP_PER_MM = 0x360A;
+constexpr uint16_t VP_E0_STEP_PER_MM = 0x3610;
+//constexpr uint16_t VP_E1_STEP_PER_MM = 0x3612;
+//constexpr uint16_t VP_E2_STEP_PER_MM = 0x3614;
+//constexpr uint16_t VP_E3_STEP_PER_MM = 0x3616;
+//constexpr uint16_t VP_E4_STEP_PER_MM = 0x3618;
+//constexpr uint16_t VP_E5_STEP_PER_MM = 0x361A;
+
+// PIDs
+constexpr uint16_t VP_E0_PID_P = 0x3700; // at the moment , 2 byte unsigned int , 0~1638.4
+constexpr uint16_t VP_E0_PID_I = 0x3702;
+constexpr uint16_t VP_E0_PID_D = 0x3704;
+constexpr uint16_t VP_BED_PID_P = 0x3710;
+constexpr uint16_t VP_BED_PID_I = 0x3712;
+constexpr uint16_t VP_BED_PID_D = 0x3714;
+
+// Wating screen status
+constexpr uint16_t VP_WAITING_STATUS = 0x3800;
+
+// SPs for certain variables...
+// located at 0x5000 and up
+// Not used yet!
+// This can be used e.g to make controls / data display invisible
+constexpr uint16_t SP_T_E0_Is = 0x5000;
+constexpr uint16_t SP_T_E0_Set = 0x5010;
+constexpr uint16_t SP_T_E1_Is = 0x5020;
+constexpr uint16_t SP_T_Bed_Is = 0x5030;
+constexpr uint16_t SP_T_Bed_Set = 0x5040;

Marlin/src/lcd/extui/dgus/origin/DGUSScreenHandler.cpp

@@ -0,0 +1,420 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../../../inc/MarlinConfigPre.h"
+
+#if ENABLED(DGUS_LCD_UI_ORIGIN)
+
+#include "../DGUSScreenHandler.h"
+
+#include "../../../../MarlinCore.h"
+#include "../../../../gcode/queue.h"
+#include "../../../../libs/duration_t.h"
+#include "../../../../module/settings.h"
+#include "../../../../module/temperature.h"
+#include "../../../../module/motion.h"
+#include "../../../../module/planner.h"
+#include "../../../../module/printcounter.h"
+#include "../../../../sd/cardreader.h"
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+  #include "../../../../feature/powerloss.h"
+#endif
+
+#if ENABLED(SDSUPPORT)
+
+  static ExtUI::FileList filelist;
+
+  void DGUSScreenHandler::DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t touched_nr = (int16_t)swap16(*(uint16_t*)val_ptr) + top_file;
+    if (touched_nr > filelist.count()) return;
+    if (!filelist.seek(touched_nr)) return;
+
+    if (filelist.isDir()) {
+      filelist.changeDir(filelist.filename());
+      top_file = 0;
+      ForceCompleteUpdate();
+      return;
+    }
+
+    #if ENABLED(DGUS_PRINT_FILENAME)
+      // Send print filename
+      dgusdisplay.WriteVariable(VP_SD_Print_Filename, filelist.filename(), VP_SD_FileName_LEN, true);
+    #endif
+
+    // Setup Confirmation screen
+    file_to_print = touched_nr;
+
+    HandleUserConfirmationPopUp(VP_SD_FileSelectConfirm, nullptr, PSTR("Print file"), filelist.filename(), PSTR("from SD Card?"), true, true, false, true);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!filelist.seek(file_to_print)) return;
+    ExtUI::printFile(filelist.shortFilename());
+    GotoScreen(DGUSLCD_SCREEN_STATUS);
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr) {
+
+    if (!ExtUI::isPrintingFromMedia()) return; // avoid race condition when user stays in this menu and printer finishes.
+    switch (swap16(*(uint16_t*)val_ptr)) {
+      case 0: { // Resume
+        if (ExtUI::isPrintingFromMediaPaused()) {
+          ExtUI::resumePrint();
+        }
+      } break;
+
+      case 1: // Pause
+
+        GotoScreen(MKSLCD_SCREEN_PAUSE);
+        if (!ExtUI::isPrintingFromMediaPaused()) {
+          ExtUI::pausePrint();
+          //ExtUI::mks_pausePrint();
+        }
+        break;
+      case 2: // Abort
+        HandleUserConfirmationPopUp(VP_SD_AbortPrintConfirmed, nullptr, PSTR("Abort printing"), filelist.filename(), PSTR("?"), true, true, false, true);
+        break;
+    }
+  }
+
+  void DGUSScreenHandler::DGUSLCD_SD_SendFilename(DGUS_VP_Variable& var) {
+    uint16_t target_line = (var.VP - VP_SD_FileName0) / VP_SD_FileName_LEN;
+    if (target_line > DGUS_SD_FILESPERSCREEN) return;
+    char tmpfilename[VP_SD_FileName_LEN + 1] = "";
+    var.memadr = (void*)tmpfilename;
+
+    if (filelist.seek(top_file + target_line)) {
+      snprintf_P(tmpfilename, VP_SD_FileName_LEN, PSTR("%s%c"), filelist.filename(), filelist.isDir() ? '/' : 0); // snprintf_P(tmpfilename, VP_SD_FileName_LEN, PSTR("%s"), filelist.filename());
+    }
+    DGUSLCD_SendStringToDisplay(var);
+  }
+
+  void DGUSScreenHandler::SDCardInserted() {
+    top_file = 0;
+    filelist.refresh();
+    auto cs = getCurrentScreen();
+    if (cs == DGUSLCD_SCREEN_MAIN || cs == DGUSLCD_SCREEN_STATUS)
+      GotoScreen(DGUSLCD_SCREEN_SDFILELIST);
+  }
+
+  void DGUSScreenHandler::SDCardRemoved() {
+    if (current_screen == DGUSLCD_SCREEN_SDFILELIST
+        || (current_screen == DGUSLCD_SCREEN_CONFIRM && (ConfirmVP == VP_SD_AbortPrintConfirmed || ConfirmVP == VP_SD_FileSelectConfirm))
+        || current_screen == DGUSLCD_SCREEN_SDPRINTMANIPULATION
+    ) GotoScreen(DGUSLCD_SCREEN_MAIN);
+  }
+
+#endif // SDSUPPORT
+
+void DGUSScreenHandler::ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr) {
+  uint8_t *tmp = (uint8_t*)val_ptr;
+
+  // The keycode in target is coded as <from-frame><to-frame>, so 0x0100A means
+  // from screen 1 (main) to 10 (temperature). DGUSLCD_SCREEN_POPUP is special,
+  // meaning "return to previous screen"
+  DGUSLCD_Screens target = (DGUSLCD_Screens)tmp[1];
+
+  DEBUG_ECHOLNPAIR("\n DEBUG target", target);
+
+  if (target == DGUSLCD_SCREEN_POPUP) {
+    // Special handling for popup is to return to previous menu
+    if (current_screen == DGUSLCD_SCREEN_POPUP && confirm_action_cb) confirm_action_cb();
+    PopToOldScreen();
+    return;
+  }
+
+  UpdateNewScreen(target);
+
+  #ifdef DEBUG_DGUSLCD
+    if (!DGUSLCD_FindScreenVPMapList(target)) DEBUG_ECHOLNPAIR("WARNING: No screen Mapping found for ", target);
+  #endif
+}
+
+void DGUSScreenHandler::HandleManualMove(DGUS_VP_Variable &var, void *val_ptr) {
+  DEBUG_ECHOLNPGM("HandleManualMove");
+
+  int16_t movevalue = swap16(*(uint16_t*)val_ptr);
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    if (movevalue) {
+      const uint16_t choice = *(uint16_t*)var.memadr;
+      movevalue = movevalue < 0 ? -choice : choice;
+    }
+  #endif
+  char axiscode;
+  unsigned int speed = 1500; // FIXME: get default feedrate for manual moves, dont hardcode.
+
+  switch (var.VP) {
+    default: return;
+
+    case VP_MOVE_X:
+      axiscode = 'X';
+      if (!ExtUI::canMove(ExtUI::axis_t::X)) goto cannotmove;
+      break;
+
+    case VP_MOVE_Y:
+      axiscode = 'Y';
+      if (!ExtUI::canMove(ExtUI::axis_t::Y)) goto cannotmove;
+      break;
+
+    case VP_MOVE_Z:
+      axiscode = 'Z';
+      speed = 300; // default to 5mm/s
+      if (!ExtUI::canMove(ExtUI::axis_t::Z)) goto cannotmove;
+      break;
+
+    case VP_HOME_ALL: // only used for homing
+      axiscode  = '\0';
+      movevalue = 0; // ignore value sent from display, this VP is _ONLY_ for homing.
+      break;
+  }
+
+  if (!movevalue) {
+    // homing
+    DEBUG_ECHOPAIR(" homing ", AS_CHAR(axiscode));
+    char buf[6] = "G28 X";
+    buf[4] = axiscode;
+    //DEBUG_ECHOPAIR(" ", buf);
+    queue.enqueue_one_now(buf);
+    //DEBUG_ECHOLNPGM(" ✓");
+    ForceCompleteUpdate();
+    return;
+  }
+  else {
+    // movement
+    DEBUG_ECHOPAIR(" move ", AS_CHAR(axiscode));
+    bool old_relative_mode = relative_mode;
+    if (!relative_mode) {
+      //DEBUG_ECHOPGM(" G91");
+      queue.enqueue_now_P(PSTR("G91"));
+      //DEBUG_ECHOPGM(" ✓ ");
+    }
+    char buf[32]; // G1 X9999.99 F12345
+    unsigned int backup_speed = MMS_TO_MMM(feedrate_mm_s);
+    char sign[] = "\0";
+    int16_t value = movevalue / 100;
+    if (movevalue < 0) { value = -value; sign[0] = '-'; }
+    int16_t fraction = ABS(movevalue) % 100;
+    snprintf_P(buf, 32, PSTR("G0 %c%s%d.%02d F%d"), axiscode, sign, value, fraction, speed);
+    //DEBUG_ECHOPAIR(" ", buf);
+    queue.enqueue_one_now(buf);
+    //DEBUG_ECHOLNPGM(" ✓ ");
+    if (backup_speed != speed) {
+      snprintf_P(buf, 32, PSTR("G0 F%d"), backup_speed);
+      queue.enqueue_one_now(buf);
+      //DEBUG_ECHOPAIR(" ", buf);
+    }
+    // while (!enqueue_and_echo_command(buf)) idle();
+    //DEBUG_ECHOLNPGM(" ✓ ");
+    if (!old_relative_mode) {
+      //DEBUG_ECHOPGM("G90");
+      queue.enqueue_now_P(PSTR("G90"));
+      //DEBUG_ECHOPGM(" ✓ ");
+    }
+  }
+
+  ForceCompleteUpdate();
+  DEBUG_ECHOLNPGM("manmv done.");
+  return;
+
+  cannotmove:
+    DEBUG_ECHOLNPAIR(" cannot move ", AS_CHAR(axiscode));
+    return;
+}
+
+#if HAS_PID_HEATING
+  void DGUSScreenHandler::HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr) {
+    uint16_t rawvalue = swap16(*(uint16_t*)val_ptr);
+    DEBUG_ECHOLNPAIR("V1:", rawvalue);
+    float value = (float)rawvalue / 10;
+    DEBUG_ECHOLNPAIR("V2:", value);
+    float newvalue = 0;
+
+    switch (var.VP) {
+      default: return;
+        #if HOTENDS >= 1
+          case VP_E0_PID_P: newvalue = value; break;
+          case VP_E0_PID_I: newvalue = scalePID_i(value); break;
+          case VP_E0_PID_D: newvalue = scalePID_d(value); break;
+        #endif
+        #if HOTENDS >= 2
+          case VP_E1_PID_P: newvalue = value; break;
+          case VP_E1_PID_I: newvalue = scalePID_i(value); break;
+          case VP_E1_PID_D: newvalue = scalePID_d(value); break;
+        #endif
+        #if HAS_HEATED_BED
+          case VP_BED_PID_P: newvalue = value; break;
+          case VP_BED_PID_I: newvalue = scalePID_i(value); break;
+          case VP_BED_PID_D: newvalue = scalePID_d(value); break;
+        #endif
+    }
+
+    DEBUG_ECHOLNPAIR_F("V3:", newvalue);
+    *(float *)var.memadr = newvalue;
+
+    skipVP = var.VP; // don't overwrite value the next update time as the display might autoincrement in parallel
+  }
+#endif // HAS_PID_HEATING
+
+#if ENABLED(BABYSTEPPING)
+  void DGUSScreenHandler::HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleLiveAdjustZ");
+    int16_t flag  = swap16(*(uint16_t*)val_ptr),
+            steps = flag ? -20 : 20;
+    ExtUI::smartAdjustAxis_steps(steps, ExtUI::axis_t::Z, true);
+    ForceCompleteUpdate();
+  }
+#endif
+
+#if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+
+  void DGUSScreenHandler::HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr) {
+    DEBUG_ECHOLNPGM("HandleFilamentOption");
+
+    uint8_t e_temp = 0;
+    filament_data.heated = false;
+    uint16_t preheat_option = swap16(*(uint16_t*)val_ptr);
+    if (preheat_option <= 8) {      // Load filament type
+      filament_data.action = 1;
+    }
+    else if (preheat_option >= 10) { // Unload filament type
+      preheat_option -= 10;
+      filament_data.action = 2;
+      filament_data.purge_length = DGUS_FILAMENT_PURGE_LENGTH;
+    }
+    else {                          // Cancel filament operation
+      filament_data.action = 0;
+    }
+
+    switch (preheat_option) {
+      case 0: // Load PLA
+        #ifdef PREHEAT_1_TEMP_HOTEND
+          e_temp = PREHEAT_1_TEMP_HOTEND;
+        #endif
+        break;
+      case 1: // Load ABS
+        TERN_(PREHEAT_2_TEMP_HOTEND, e_temp = PREHEAT_2_TEMP_HOTEND);
+        break;
+      case 2: // Load PET
+        #ifdef PREHEAT_3_TEMP_HOTEND
+          e_temp = PREHEAT_3_TEMP_HOTEND;
+        #endif
+        break;
+      case 3: // Load FLEX
+        #ifdef PREHEAT_4_TEMP_HOTEND
+          e_temp = PREHEAT_4_TEMP_HOTEND;
+        #endif
+        break;
+      case 9: // Cool down
+      default:
+        e_temp = 0;
+        break;
+    }
+
+    if (filament_data.action == 0) { // Go back to utility screen
+      #if HOTENDS >= 1
+        thermalManager.setTargetHotend(e_temp, ExtUI::extruder_t::E0);
+      #endif
+      #if HOTENDS >= 2
+        thermalManager.setTargetHotend(e_temp, ExtUI::extruder_t::E1);
+      #endif
+      GotoScreen(DGUSLCD_SCREEN_UTILITY);
+    }
+    else { // Go to the preheat screen to show the heating progress
+      switch (var.VP) {
+        default: return;
+          #if HOTENDS >= 1
+            case VP_E0_FILAMENT_LOAD_UNLOAD:
+              filament_data.extruder = ExtUI::extruder_t::E0;
+              thermalManager.setTargetHotend(e_temp, filament_data.extruder);
+              break;
+          #endif
+          #if HOTENDS >= 2
+            case VP_E1_FILAMENT_LOAD_UNLOAD:
+              filament_data.extruder = ExtUI::extruder_t::E1;
+              thermalManager.setTargetHotend(e_temp, filament_data.extruder);
+              break;
+          #endif
+      }
+      GotoScreen(DGUSLCD_SCREEN_FILAMENT_HEATING);
+    }
+  }
+
+  void DGUSScreenHandler::HandleFilamentLoadUnload(DGUS_VP_Variable &var) {
+    DEBUG_ECHOLNPGM("HandleFilamentLoadUnload");
+    if (filament_data.action <= 0) return;
+
+    // If we close to the target temperature, we can start load or unload the filament
+    if (thermalManager.hotEnoughToExtrude(filament_data.extruder) && \
+        thermalManager.targetHotEnoughToExtrude(filament_data.extruder)) {
+      float movevalue = DGUS_FILAMENT_LOAD_LENGTH_PER_TIME;
+
+      if (filament_data.action == 1) { // load filament
+        if (!filament_data.heated) {
+          //GotoScreen(DGUSLCD_SCREEN_FILAMENT_LOADING);
+          filament_data.heated = true;
+        }
+        movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) + movevalue;
+      }
+      else { // unload filament
+        if (!filament_data.heated) {
+          GotoScreen(DGUSLCD_SCREEN_FILAMENT_UNLOADING);
+          filament_data.heated = true;
+        }
+        // Before unloading extrude to prevent jamming
+        if (filament_data.purge_length >= 0) {
+          movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) + movevalue;
+          filament_data.purge_length -= movevalue;
+        }
+        else {
+          movevalue = ExtUI::getAxisPosition_mm(filament_data.extruder) - movevalue;
+        }
+      }
+      ExtUI::setAxisPosition_mm(movevalue, filament_data.extruder);
+    }
+  }
+#endif // DGUS_FILAMENT_LOADUNLOAD
+
+bool DGUSScreenHandler::loop() {
+  dgusdisplay.loop();
+
+  const millis_t ms = millis();
+  static millis_t next_event_ms = 0;
+
+  if (!IsScreenComplete() || ELAPSED(ms, next_event_ms)) {
+    next_event_ms = ms + DGUS_UPDATE_INTERVAL_MS;
+    UpdateScreenVPData();
+  }
+
+  #if ENABLED(SHOW_BOOTSCREEN)
+    static bool booted = false;
+
+    if (!booted && TERN0(POWER_LOSS_RECOVERY, recovery.valid()))
+      booted = true;
+
+    if (!booted && ELAPSED(ms, TERN(USE_MKS_GREEN_UI, 1000, BOOTSCREEN_TIMEOUT)))
+      booted = true;
+  #endif
+  return IsScreenComplete();
+}
+
+#endif // DGUS_LCD_UI_ORIGIN

Marlin/src/lcd/extui/dgus/origin/DGUSScreenHandler.h

@@ -0,0 +1,240 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../DGUSDisplay.h"
+#include "../DGUSVPVariable.h"
+#include "../DGUSDisplayDef.h"
+
+#include "../../../../inc/MarlinConfig.h"
+
+enum DGUSLCD_Screens : uint8_t;
+
+class DGUSScreenHandler {
+public:
+  DGUSScreenHandler() = default;
+
+  static bool loop();
+
+  // Send all 4 strings that are displayed on the infoscreen, confirmation screen and kill screen
+  // The bools specifing whether the strings are in RAM or FLASH.
+  static void sendinfoscreen(const char *line1, const char *line2, const char *line3, const char *line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
+
+  static void HandleUserConfirmationPopUp(uint16_t ConfirmVP, const char *line1, const char *line2, const char *line3, const char *line4, bool l1inflash, bool l2inflash, bool l3inflash, bool liinflash);
+
+  // "M117" Message -- msg is a RAM ptr.
+  static void setstatusmessage(const char *msg);
+  // The same for messages from Flash
+  static void setstatusmessagePGM(PGM_P const msg);
+  // Callback for VP "Display wants to change screen on idle printer"
+  static void ScreenChangeHookIfIdle(DGUS_VP_Variable &var, void *val_ptr);
+  // Callback for VP "Screen has been changed"
+  static void ScreenChangeHook(DGUS_VP_Variable &var, void *val_ptr);
+
+  // Callback for VP "All Heaters Off"
+  static void HandleAllHeatersOff(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for "Change this temperature"
+  static void HandleTemperatureChanged(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for "Change Flowrate"
+  static void HandleFlowRateChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(DGUS_UI_MOVE_DIS_OPTION)
+    // Hook for manual move option
+    static void HandleManualMoveOption(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+
+  // Hook for manual move.
+  static void HandleManualMove(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for manual extrude.
+  static void HandleManualExtrude(DGUS_VP_Variable &var, void *val_ptr);
+  // Hook for motor lock and unlook
+  static void HandleMotorLockUnlock(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    // Hook for power loss recovery.
+    static void HandlePowerLossRecovery(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for settings
+  static void HandleSettings(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMChanged(DGUS_VP_Variable &var, void *val_ptr);
+  static void HandleStepPerMMExtruderChanged(DGUS_VP_Variable &var, void *val_ptr);
+
+  #if HAS_PID_HEATING
+    // Hook for "Change this temperature PID para"
+    static void HandleTemperaturePIDChanged(DGUS_VP_Variable &var, void *val_ptr);
+    // Hook for PID autotune
+    static void HandlePIDAutotune(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if HAS_BED_PROBE
+    // Hook for "Change probe offset z"
+    static void HandleProbeOffsetZChanged(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if ENABLED(BABYSTEPPING)
+    // Hook for live z adjust action
+    static void HandleLiveAdjustZ(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if HAS_FAN
+    // Hook for fan control
+    static void HandleFanControl(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  // Hook for heater control
+  static void HandleHeaterControl(DGUS_VP_Variable &var, void *val_ptr);
+  #if ENABLED(DGUS_PREHEAT_UI)
+    // Hook for preheat
+    static void HandlePreheat(DGUS_VP_Variable &var, void *val_ptr);
+  #endif
+  #if ENABLED(DGUS_FILAMENT_LOADUNLOAD)
+    // Hook for filament load and unload filament option
+    static void HandleFilamentOption(DGUS_VP_Variable &var, void *val_ptr);
+    // Hook for filament load and unload
+    static void HandleFilamentLoadUnload(DGUS_VP_Variable &var);
+  #endif
+
+  #if ENABLED(SDSUPPORT)
+    // Callback for VP "Display wants to change screen when there is a SD card"
+    static void ScreenChangeHookIfSD(DGUS_VP_Variable &var, void *val_ptr);
+    // Scroll buttons on the file listing screen.
+    static void DGUSLCD_SD_ScrollFilelist(DGUS_VP_Variable &var, void *val_ptr);
+    // File touched.
+    static void DGUSLCD_SD_FileSelected(DGUS_VP_Variable &var, void *val_ptr);
+    // start print after confirmation received.
+    static void DGUSLCD_SD_StartPrint(DGUS_VP_Variable &var, void *val_ptr);
+    // User hit the pause, resume or abort button.
+    static void DGUSLCD_SD_ResumePauseAbort(DGUS_VP_Variable &var, void *val_ptr);
+    // User confirmed the abort action
+    static void DGUSLCD_SD_ReallyAbort(DGUS_VP_Variable &var, void *val_ptr);
+    // User hit the tune button
+    static void DGUSLCD_SD_PrintTune(DGUS_VP_Variable &var, void *val_ptr);
+    // Send a single filename to the display.
+    static void DGUSLCD_SD_SendFilename(DGUS_VP_Variable &var);
+    // Marlin informed us that a new SD has been inserted.
+    static void SDCardInserted();
+    // Marlin informed us that the SD Card has been removed().
+    static void SDCardRemoved();
+    // Marlin informed us about a bad SD Card.
+    static void SDCardError();
+  #endif
+
+  // OK Button the Confirm screen.
+  static void ScreenConfirmedOK(DGUS_VP_Variable &var, void *val_ptr);
+
+  // Update data after went to new screen (by display or by GotoScreen)
+  // remember: store the last-displayed screen, so it can get returned to.
+  // (e.g for pop up messages)
+  static void UpdateNewScreen(DGUSLCD_Screens newscreen, bool popup=false);
+
+  // Recall the remembered screen.
+  static void PopToOldScreen();
+
+  // Make the display show the screen and update all VPs in it.
+  static void GotoScreen(DGUSLCD_Screens screen, bool ispopup = false);
+
+  static void UpdateScreenVPData();
+
+  // Helpers to convert and transfer data to the display.
+  static void DGUSLCD_SendWordValueToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendStringToDisplayPGM(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendTemperaturePID(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPercentageToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPrintProgressToDisplay(DGUS_VP_Variable &var);
+  static void DGUSLCD_SendPrintTimeToDisplay(DGUS_VP_Variable &var);
+
+  #if ENABLED(PRINTCOUNTER)
+    static void DGUSLCD_SendPrintAccTimeToDisplay(DGUS_VP_Variable &var);
+    static void DGUSLCD_SendPrintsTotalToDisplay(DGUS_VP_Variable &var);
+  #endif
+  #if HAS_FAN
+    static void DGUSLCD_SendFanStatusToDisplay(DGUS_VP_Variable &var);
+  #endif
+  static void DGUSLCD_SendHeaterStatusToDisplay(DGUS_VP_Variable &var);
+  #if ENABLED(DGUS_UI_WAITING)
+    static void DGUSLCD_SendWaitingStatusToDisplay(DGUS_VP_Variable &var);
+  #endif
+
+  // Send a value from 0..100 to a variable with a range from 0..255
+  static void DGUSLCD_PercentageToUint8(DGUS_VP_Variable &var, void *val_ptr);
+
+  template<typename T>
+  static void DGUSLCD_SetValueDirectly(DGUS_VP_Variable &var, void *val_ptr) {
+    if (!var.memadr) return;
+    union { unsigned char tmp[sizeof(T)]; T t; } x;
+    unsigned char *ptr = (unsigned char*)val_ptr;
+    LOOP_L_N(i, sizeof(T)) x.tmp[i] = ptr[sizeof(T) - i - 1];
+    *(T*)var.memadr = x.t;
+  }
+
+  // Send a float value to the display.
+  // Display will get a 4-byte integer scaled to the number of digits:
+  // Tell the display the number of digits and it cheats by displaying a dot between...
+  template<unsigned int decimals>
+  static void DGUSLCD_SendFloatAsLongValueToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      float f = *(float *)var.memadr;
+      f *= cpow(10, decimals);
+      dgusdisplay.WriteVariable(var.VP, (long)f);
+    }
+  }
+
+  // Send a float value to the display.
+  // Display will get a 2-byte integer scaled to the number of digits:
+  // Tell the display the number of digits and it cheats by displaying a dot between...
+  template<unsigned int decimals>
+  static void DGUSLCD_SendFloatAsIntValueToDisplay(DGUS_VP_Variable &var) {
+    if (var.memadr) {
+      float f = *(float *)var.memadr;
+      DEBUG_ECHOLNPAIR_F(" >> ", f, 6);
+      f *= cpow(10, decimals);
+      dgusdisplay.WriteVariable(var.VP, (int16_t)f);
+    }
+  }
+
+  // Force an update of all VP on the current screen.
+  static inline void ForceCompleteUpdate() { update_ptr = 0; ScreenComplete = false; }
+  // Has all VPs sent to the screen
+  static inline bool IsScreenComplete() { return ScreenComplete; }
+
+  static inline DGUSLCD_Screens getCurrentScreen() { return current_screen; }
+
+  static inline void SetupConfirmAction( void (*f)()) { confirm_action_cb = f; }
+
+private:
+  static DGUSLCD_Screens current_screen;  //< currently on screen
+  static constexpr uint8_t NUM_PAST_SCREENS = 4;
+  static DGUSLCD_Screens past_screens[NUM_PAST_SCREENS]; //< LIFO with past screens for the "back" button.
+
+  static uint8_t update_ptr;      //< Last sent entry in the VPList for the actual screen.
+  static uint16_t skipVP;         //< When updating the screen data, skip this one, because the user is interacting with it.
+  static bool ScreenComplete;     //< All VPs sent to screen?
+
+  static uint16_t ConfirmVP;      //< context for confirm screen (VP that will be emulated-sent on "OK").
+
+  #if ENABLED(SDSUPPORT)
+    static int16_t top_file;      //< file on top of file chooser
+    static int16_t file_to_print; //< touched file to be confirmed
+  #endif
+
+  static void (*confirm_action_cb)();
+};
+
+#if ENABLED(POWER_LOSS_RECOVERY)
+  #define PLR_SCREEN_RECOVER DGUSLCD_SCREEN_SDPRINTMANIPULATION
+  #define PLR_SCREEN_CANCEL DGUSLCD_SCREEN_STATUS
+#endif