Support Longer LK Pro / Alfawise PRO board

Marlin/src/core/boards.h

@@ -113,6 +113,7 @@
 #define BOARD_RAMPS_S_12_EEFB         1157  // Ramps S 1.2 by Sakul.cz (Power outputs: Hotend0, Hotend1, Fan, Bed)
 #define BOARD_RAMPS_S_12_EEEB         1158  // Ramps S 1.2 by Sakul.cz (Power outputs: Hotend0, Hotend1, Hotend2, Bed)
 #define BOARD_RAMPS_S_12_EFFB         1159  // Ramps S 1.2 by Sakul.cz (Power outputs: Hotend, Fan0, Fan1, Bed)
+#define BOARD_RAMPS_LONGER3D_LKPRO    1160  // Longer LKxxPRO/ Alfawise UxxPro (PRO version)
 
 //
 // RAMBo and derivatives

Marlin/src/pins/pins.h

@@ -215,6 +215,8 @@
   #include "ramps/pins_RAMPS_S_12.h"            // ATmega2560                             env:mega2560
 #elif MB(RAMPS_S_12_EFFB)
   #include "ramps/pins_RAMPS_S_12.h"            // ATmega2560                             env:mega2560
+#elif MB(RAMPS_LONGER3D_LKPRO)
+  #include "ramps/pins_LONGER3D_LKPRO.h"        // ATmega2560                             env:mega2560
 
 //
 // RAMBo and derivatives

Marlin/src/pins/ramps/pins_LONGER3D_LKPRO.h

@@ -0,0 +1,51 @@
+/**
+ * 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
+
+// Longer UI assumptions
+#if HOTENDS > 1 || E_STEPPERS > 1
+  #error "Longer UI supports only 1 hotend / E-stepper."
+#endif
+
+#define BOARD_INFO_NAME "Longer-LKPRO"
+
+#ifdef LGT_ESP
+    #define Y_MIN_PIN                         37
+#endif
+
+#define SD_DETECT_PIN                         49
+#define FIL_RUNOUT_PIN                         2
+
+#ifdef U20_Pro_AutoBed
+    #define Z_MIN_PIN                         11
+    #define Z_MAX_PIN                         37
+#else //U30_Pro
+    #define Z_MIN_PIN                         35
+    #ifndef LGT_ESP
+        #define Z_MAX_PIN                     37
+    #endif // !LGT_ESP
+#endif
+
+//
+// Import RAMPS 1.4 pins
+//
+#include "pins_RAMPS.h"