MarlinUI for SPI/I2C TFT-GLCD character-based display bridge (#19375)

Marlin/src/lcd/TFTGLCD/ultralcd_TFTGLCD.h

@@ -0,0 +1,74 @@
+/**
+ * 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
+
+/**
+ * Implementation of the LCD display routines for a TFT GLCD displays with external controller.
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if IS_TFTGLCD_PANEL
+
+#include "../../libs/duration_t.h"
+
+////////////////////////////////////
+// Set up button and encode mappings for each panel (into 'buttons' variable)
+//
+// This is just to map common functions (across different panels) onto the same
+// macro name. The mapping is independent of whether the button is directly connected or
+// via a shift/i2c register.
+
+////////////////////////////////////
+// Create LCD class instance and chipset-specific information
+class TFTGLCD {
+  private:
+  public:
+    TFTGLCD();
+    void clear_buffer();
+    void setCursor(uint8_t col, uint8_t row);
+    void write(char c);
+    void print(const char *line);
+    void print_line();
+    void print_screen();
+    void redraw_screen();
+    void setContrast(uint16_t contrast);
+};
+
+extern TFTGLCD lcd;
+
+#include "../fontutils.h"
+#include "../lcdprint.h"
+
+// Use panel encoder - free old encoder pins
+#undef  BTN_EN1
+#undef  BTN_EN2
+#undef  BTN_ENC
+#define BTN_EN1     -1
+#define BTN_EN2     -1
+#define BTN_ENC     -1
+
+#ifndef EN_C
+  #define EN_C       4 //for click
+#endif
+
+#endif // IS_TFTGLCD_PANEL