Add RUMBA32 Board (#12856)

Marlin/src/core/boards.h

@@ -241,6 +241,7 @@
 #define BOARD_BEAST            1802   // STM32FxxxVxT6 Libmaple based stm32f4 controller
 #define BOARD_STM32F4          1804   // STM32 STM32GENERIC based STM32F4 controller
 #define BOARD_ARMED            1807   // Arm'ed STM32F4 based controller
+#define BOARD_RUMBA32          1809   // RUMBA32 STM32F4 based controller
 
 //
 // ARM Cortex M7

Marlin/src/pins/pins.h

@@ -419,6 +419,8 @@
   #include "pins_STM32F4.h"           // STM32F4                                    env:STM32F4
 #elif MB(ARMED)
   #include "pins_ARMED.h"             // STM32F4                                    env:ARMED
+#elif MB(RUMBA32)
+  #include "pins_RUMBA32.h"           // STM32F4                                    env:RUMBA32
 
 //
 // ARM Cortex M7

Marlin/src/pins/pins_RUMBA32.h

@@ -0,0 +1,132 @@
+/**
+ * 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/>.
+ *
+ */
+
+#ifndef STM32F4
+  #error "Oops! Select an STM32F4 board in 'Tools > Board.'"
+#endif
+
+#define RUMBA32_V1_0
+#define DEFAULT_MACHINE_NAME "RUMBA32"
+#define BOARD_NAME "RUMBA32"
+
+//#define I2C_EEPROM
+
+#define E2END 0xFFF // EEPROM end address (4kB)
+
+#if HOTENDS > 3 || E_STEPPERS > 3
+  #error "RUMBA32 supports up to 3 hotends / E-steppers."
+#endif
+
+//
+// Limit Switches
+//
+#define X_MIN_PIN          PB12
+#define X_MAX_PIN          PB13
+#define Y_MIN_PIN          PB15
+#define Y_MAX_PIN          PD8
+#define Z_MIN_PIN          PD9
+#define Z_MAX_PIN          PD10
+
+//
+// Steppers
+//
+#define X_STEP_PIN         PA0
+#define X_DIR_PIN          PC15
+#define X_ENABLE_PIN       PC11
+#define X_CS_PIN           PC14
+
+#define Y_STEP_PIN         PE5
+#define Y_DIR_PIN          PE6
+#define Y_ENABLE_PIN       PE3
+#define Y_CS_PIN           PE4
+
+#define Z_STEP_PIN         PE1
+#define Z_DIR_PIN          PE2
+#define Z_ENABLE_PIN       PB7
+#define Z_CS_PIN           PE0
+
+#define E0_STEP_PIN        PB5
+#define E0_DIR_PIN         PB6
+#define E0_ENABLE_PIN      PC12
+#define E0_CS_PIN          PC13
+
+#define E1_STEP_PIN        PD6
+#define E1_DIR_PIN         PD7
+#define E1_ENABLE_PIN      PD4
+#define E1_CS_PIN          PD5
+
+#define E2_STEP_PIN        PD2
+#define E2_DIR_PIN         PD3
+#define E2_ENABLE_PIN      PD0
+#define E2_CS_PIN          PD1
+
+//
+// Temperature Sensors
+//
+#define TEMP_0_PIN         PC4
+#define TEMP_1_PIN         PC3
+#define TEMP_2_PIN         PC2
+#define TEMP_3_PIN         PC1
+#define TEMP_BED_PIN       PC0
+
+//
+// Heaters / Fans
+//
+#define HEATER_0_PIN       PC6
+#define HEATER_1_PIN       PC7
+#define HEATER_2_PIN       PC8
+#define HEATER_BED_PIN     PA1
+
+#define FAN_PIN            PC9
+#define FAN1_PIN           PA8
+
+//
+// I2C
+//
+#define SCK_PIN            PA5
+#define MISO_PIN           PA6
+#define MOSI_PIN           PA7
+
+//
+// Misc. Functions
+//
+#define LED_PIN            PB14
+#define BTN_PIN            PC10
+#define PS_ON_PIN          PE11
+#define KILL_PIN           PC5
+
+#define SDSS               PA2
+#define SD_DETECT_PIN      PB0
+#define BEEPER_PIN         PE8
+
+//
+// LCD / Controller
+//
+#define LCD_PINS_RS        PE10
+#define LCD_PINS_ENABLE    PE9
+#define LCD_PINS_D4        PE12
+#define LCD_PINS_D5        PE13
+#define LCD_PINS_D6        PE14
+#define LCD_PINS_D7        PE15
+#define BTN_EN1            PB1
+#define BTN_EN2            PB2
+#define BTN_ENC            PE7