✨ GT2560 V4.x A20 (#22664)

Marlin/src/core/boards.h

@@ -149,17 +149,18 @@
 #define BOARD_GT2560_REV_A 1314 // Geeetech GT2560 Rev A
 #define BOARD_GT2560_REV_A_PLUS 1315 // Geeetech GT2560 Rev A+ (with auto level probe)
 #define BOARD_GT2560_REV_B 1316 // Geeetech GT2560 Rev B
-#define BOARD_GT2560_V3 1317 // Geeetech GT2560 Rev B for A10(M/D)
-#define BOARD_GT2560_V4 1318 // Geeetech GT2560 Rev B for A10(M/D)
+#define BOARD_GT2560_V3 1317 // Geeetech GT2560 Rev B for A10(M/T/D)
+#define BOARD_GT2560_V4 1318 // Geeetech GT2560 Rev B for A10(M/T/D)
 #define BOARD_GT2560_V3_MC2 1319 // Geeetech GT2560 Rev B for Mecreator2
-#define BOARD_GT2560_V3_A20 1320 // Geeetech GT2560 Rev B for A20(M/D)
+#define BOARD_GT2560_V3_A20 1320 // Geeetech GT2560 Rev B for A20(M/T/D)
 #define BOARD_EINSTART_S 1321 // Einstart retrofit
 #define BOARD_WANHAO_ONEPLUS 1322 // Wanhao 0ne+ i3 Mini
 #define BOARD_LEAPFROG_XEED2015 1323 // Leapfrog Xeed 2015
 #define BOARD_PICA_REVB 1324 // PICA Shield (original version)
 #define BOARD_PICA 1325 // PICA Shield (rev C or later)
 #define BOARD_INTAMSYS40 1326 // Intamsys 4.0 (Funmat HT)
 #define BOARD_MALYAN_M180 1327 // Malyan M180 Mainboard Version 2 (no display function, direct gcode only)
+#define BOARD_GT2560_V4_A20 1328 // Geeetech GT2560 Rev B for A20(M/T/D)
 
 //
 // ATmega1281, ATmega2561

Marlin/src/pins/mega/pins_GT2560_V4_A20.h

@@ -0,0 +1,43 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 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
+
+/**
+ * Geeetech A20 GT2560 V4.x board pin assignments
+ */
+
+#define BOARD_INFO_NAME "GT2560 4.x"
+
+#define LCD_PINS_RS 5
+#define LCD_PINS_ENABLE 36
+#define LCD_PINS_D4 21
+#define LCD_PINS_D7 6
+
+#define SPEAKER // The speaker can produce tones
+
+#if IS_NEWPANEL
+ #define BTN_EN1 16
+ #define BTN_EN2 17
+ #define BTN_ENC 19
+#endif
+
+#include "pins_GT2560_V3.h"

Marlin/src/pins/pins.h

@@ -243,6 +243,8 @@
  #include "mega/pins_GT2560_REV_B.h" // ATmega2560 env:mega2560
 #elif MB(GT2560_V4)
  #include "mega/pins_GT2560_V4.h" // ATmega2560 env:mega2560
+ #elif MB(GT2560_V4_A20)
+ #include "mega/pins_GT2560_V4_A20.h" // ATmega2560 env:mega2560
 #elif MB(GT2560_V3_MC2)
  #include "mega/pins_GT2560_V3_MC2.h" // ATmega2560 env:mega2560
 #elif MB(GT2560_V3_A20)