Add LCD_SET_PROGRESS_MANUALLY

Marlin/src/gcode/gcode.cpp

@@ -354,6 +354,10 @@ void GcodeSuite::process_next_command() {
         case 49: M49(); break;    // M49: Turn on or off G26 debug flag for verbose output
       #endif
 
+      #if ENABLED(ULTRA_LCD) && ENABLED(LCD_SET_PROGRESS_MANUALLY)
+        case 73: M73(); break;    // M73: Set progress percentage (for display on LCD)
+      #endif
+
       case 75: M75(); break;      // M75: Start print timer
       case 76: M76(); break;      // M76: Pause print timer
       case 77: M77(); break;      // M77: Stop print timer

Marlin/src/gcode/gcode.h

@@ -437,6 +437,10 @@ private:
     static void M49();
   #endif
 
+  #if ENABLED(ULTRA_LCD) && ENABLED(LCD_SET_PROGRESS_MANUALLY)
+    static void M73();
+  #endif
+
   static void M75();
   static void M76();
   static void M77();

Marlin/src/gcode/host/M115.cpp

@@ -72,6 +72,13 @@ void GcodeSuite::M115() {
       SERIAL_PROTOCOLLNPGM("Cap:LEVELING_DATA:0");
     #endif
 
+    // BUILD_PERCENT (M73)
+    #if ENABLED(LCD_SET_PROGRESS_MANUALLY)
+      SERIAL_PROTOCOLLNPGM("Cap:BUILD_PERCENT:1");
+    #else
+      SERIAL_PROTOCOLLNPGM("Cap:BUILD_PERCENT:0");
+    #endif
+
     // SOFTWARE_POWER (M80, M81)
     #if HAS_POWER_SWITCH
       SERIAL_PROTOCOLLNPGM("Cap:SOFTWARE_POWER:1");

Marlin/src/gcode/lcd/M73.cpp

@@ -0,0 +1,48 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(ULTRA_LCD) && ENABLED(LCD_SET_PROGRESS_MANUALLY)
+
+#include "../gcode.h"
+#include "../../module/parser.h"
+#include "../../lcd/ultralcd.h"
+#include "../../sd/cardreader.h"
+
+/**
+ * M73: Set percentage complete (for display on LCD)
+ *
+ * Example:
+ *   M73 P25 ; Set progress to 25%
+ *
+ * Notes:
+ *   This has no effect during an SD print job
+ */
+void GcodeSuite::M73() {
+  if (!IS_SD_PRINTING && parser.seen('P')) {
+    progress_bar_percent = parser.value_byte();
+    NOMORE(progress_bar_percent, 100);
+  }
+}
+
+#endif // ULTRA_LCD && LCD_SET_PROGRESS_MANUALLY