MKS_GEN_L_V2 controller (#15805)

Marlin/boards.h

@@ -63,6 +63,7 @@
 #define BOARD_MKS_BASE_HEROIC   41    // MKS BASE 1.0 with Heroic HR4982 stepper drivers
 #define BOARD_MKS_GEN_13        47    // MKS GEN v1.3 or 1.4
 #define BOARD_MKS_GEN_L         53    // MKS GEN L
+#define BOARD_MKS_GEN_L_V2      54    // MKS GEN L V2
 #define BOARD_ZRIB_V20          504   // zrib V2.0 control board (Chinese knock off RAMPS replica)
 #define BOARD_FELIX2            37    // Felix 2.0+ Electronics Board (RAMPS like)
 #define BOARD_RIGIDBOARD        42    // Invent-A-Part RigidBoard

Marlin/pins.h

@@ -140,6 +140,8 @@
   #include "pins_TRIGORILLA_14.h"     // ATmega2560                                 env:megaatmega2560
 #elif MB(RAMPS_ENDER_4)
   #include "pins_RAMPS_ENDER_4.h"     // ATmega2560                                 env:megaatmega2560
+#elif MB(MKS_GEN_L_V2)
+  #include "pins_MKS_GEN_L_V2.h"      // ATmega2560                                 env:megaatmega2560
 
 //
 // Other ATmega1280, ATmega2560

Marlin/pins_MKS_GEN_L_V2.h

@@ -0,0 +1,87 @@
+/**
+ * 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/>.
+ *
+ */
+
+/**
+ * MKS GEN L V2 – Arduino Mega2560 with RAMPS v1.4 pin assignments
+ */
+
+#if HOTENDS > 2 || E_STEPPERS > 2
+  #error "MKS GEN L V2 supports up to 2 hotends / E-steppers. Comment out this line to continue."
+#endif
+
+#define BOARD_NAME "MKS GEN L V2"
+
+//
+// Servos
+//
+#ifndef SERVO1_PIN
+  #define SERVO1_PIN       12
+#endif
+#ifndef SERVO2_PIN
+  #define SERVO2_PIN       39
+#endif
+#ifndef SERVO3_PIN
+  #define SERVO3_PIN       32
+#endif
+
+//
+// Heaters / Fans
+//
+
+// Power outputs EFBF or EFBE
+#define MOSFET_D_PIN        7
+
+//
+// CS Pins wired to avoid conflict with the LCD
+// See https://www.thingiverse.com/asset:66604
+//
+#ifndef X_CS_PIN
+  #define X_CS_PIN 63
+#endif
+#ifndef Y_CS_PIN
+  #define Y_CS_PIN         64
+#endif
+#ifndef Z_CS_PIN
+  #define Z_CS_PIN         65
+#endif
+#ifndef E0_CS_PIN
+  #define E0_CS_PIN        66
+#endif
+#ifndef E1_CS_PIN
+  #define E1_CS_PIN        21
+#endif
+
+// TMC2130 Diag Pins (currently just for reference)
+#define X_DIAG_PIN          3
+#define Y_DIAG_PIN         14
+#define Z_DIAG_PIN         18
+#define E0_DIAG_PIN         2
+#define E1_DIAG_PIN        15
+
+#ifndef E1_SERIAL_TX_PIN
+  #define E1_SERIAL_TX_PIN 20
+#endif
+#ifndef E1_SERIAL_RX_PIN
+  #define E1_SERIAL_RX_PIN 21
+#endif
+ 
+#include "pins_RAMPS.h"

Marlin/pins_RAMPS.h

@@ -60,8 +60,12 @@
 #else
   #define SERVO0_PIN       11
 #endif
-#define SERVO1_PIN          6
+#ifndef SERVO1_PIN
-#define SERVO2_PIN          5
+  #define SERVO1_PIN        6
+#endif
+#ifndef SERVO2_PIN
+  #define SERVO2_PIN        5
+#endif
 #ifndef SERVO3_PIN
   #define SERVO3_PIN        4
 #endif
@@ -161,31 +165,75 @@
    * Software serial
    */
 
-  #define X_SERIAL_TX_PIN    40
+  #ifndef X_SERIAL_TX_PIN
-  #define X_SERIAL_RX_PIN    63
+    #define X_SERIAL_TX_PIN  40
-  #define X2_SERIAL_TX_PIN   -1
+  #endif
-  #define X2_SERIAL_RX_PIN   -1
+  #ifndef X_SERIAL_RX_PIN
+    #define X_SERIAL_RX_PIN  63
+  #endif
+  #ifndef X2_SERIAL_TX_PIN
+    #define X2_SERIAL_TX_PIN -1
+  #endif
+  #ifndef X2_SERIAL_RX_PIN
+    #define X2_SERIAL_RX_PIN -1
+  #endif
 
-  #define Y_SERIAL_TX_PIN    59
+  #ifndef Y_SERIAL_TX_PIN
-  #define Y_SERIAL_RX_PIN    64
+    #define Y_SERIAL_TX_PIN  59
-  #define Y2_SERIAL_TX_PIN   -1
+  #endif
-  #define Y2_SERIAL_RX_PIN   -1
+  #ifndef Y_SERIAL_RX_PIN
+    #define Y_SERIAL_RX_PIN  64
+  #endif
+  #ifndef Y2_SERIAL_TX_PIN
+    #define Y2_SERIAL_TX_PIN -1
+  #endif
+  #ifndef Y2_SERIAL_RX_PIN
+    #define Y2_SERIAL_RX_PIN -1
+  #endif
 
-  #define Z_SERIAL_TX_PIN    42
+  #ifndef Z_SERIAL_TX_PIN
-  #define Z_SERIAL_RX_PIN    65
+    #define Z_SERIAL_TX_PIN  42
-  #define Z2_SERIAL_TX_PIN   -1
+  #endif
-  #define Z2_SERIAL_RX_PIN   -1
+  #ifndef Z_SERIAL_RX_PIN
+    #define Z_SERIAL_RX_PIN  65
+  #endif
+  #ifndef Z2_SERIAL_TX_PIN
+    #define Z2_SERIAL_TX_PIN -1
+  #endif
+  #ifndef Z2_SERIAL_RX_PIN
+    #define Z2_SERIAL_RX_PIN -1
+  #endif
 
-  #define E0_SERIAL_TX_PIN   44
+  #ifndef E0_SERIAL_TX_PIN
-  #define E0_SERIAL_RX_PIN   66
+    #define E0_SERIAL_TX_PIN 44
-  #define E1_SERIAL_TX_PIN   -1
+  #endif
-  #define E1_SERIAL_RX_PIN   -1
+  #ifndef E0_SERIAL_RX_PIN
-  #define E2_SERIAL_TX_PIN   -1
+    #define E0_SERIAL_RX_PIN 66
-  #define E2_SERIAL_RX_PIN   -1
+  #endif
-  #define E3_SERIAL_TX_PIN   -1
+  #ifndef E1_SERIAL_TX_PIN
-  #define E3_SERIAL_RX_PIN   -1
+    #define E1_SERIAL_TX_PIN -1
-  #define E4_SERIAL_TX_PIN   -1
+  #endif
-  #define E4_SERIAL_RX_PIN   -1
+  #ifndef E1_SERIAL_RX_PIN
+    #define E1_SERIAL_RX_PIN -1
+  #endif
+  #ifndef E2_SERIAL_TX_PIN
+    #define E2_SERIAL_TX_PIN -1
+  #endif
+  #ifndef E2_SERIAL_RX_PIN
+    #define E2_SERIAL_RX_PIN -1
+  #endif
+  #ifndef E3_SERIAL_TX_PIN
+    #define E3_SERIAL_TX_PIN -1
+  #endif
+  #ifndef E3_SERIAL_RX_PIN
+    #define E3_SERIAL_RX_PIN -1
+  #endif
+  #ifndef E4_SERIAL_TX_PIN
+    #define E4_SERIAL_TX_PIN -1
+  #endif
+  #ifndef E4_SERIAL_RX_PIN
+    #define E4_SERIAL_RX_PIN -1
+  #endif
 #endif
 
 //