Add Zonestar/Anet LCD for SKR mini E3 (#15931)

Marlin/src/HAL/HAL_STM32F1/HAL.cpp

   #if ENABLED(FILAMENT_WIDTH_SENSOR)
     FILWIDTH_PIN,
   #endif
+  #if ENABLED(ADC_KEYPAD)
+    ADC_KEYPAD_PIN,
+  #endif
   #if HAS_JOY_ADC_X
     JOY_X_PIN,
   #endif
   #if ENABLED(FILAMENT_WIDTH_SENSOR)
     FILWIDTH,
   #endif
+  #if ENABLED(ADC_KEYPAD)
+    ADC_KEY,
+  #endif
   #if HAS_JOY_ADC_X
     JOY_X,
   #endif
     #if ENABLED(FILAMENT_WIDTH_SENSOR)
       case FILWIDTH_PIN: pin_index = FILWIDTH; break;
     #endif
+    #if ENABLED(ADC_KEYPAD)
+      case ADC_KEYPAD_PIN: pin_index = ADC_KEY; break;
+    #endif
   }
   HAL_adc_result = (HAL_adc_results[(int)pin_index] >> 2) & 0x3FF; // shift to get 10 bits only.
 }

Marlin/src/HAL/HAL_STM32F1/timers.h

 //#define TEMP_TIMER_NUM 4  // 2->4, Timer 2 for Stepper Current PWM
 #define PULSE_TIMER_NUM STEP_TIMER_NUM
 
-#if MB(BIGTREE_SKR_MINI_E3, BIGTREE_SKR_E3_DIP, BTT_SKR_MINI_E3_V1_2, MKS_ROBIN_LITE)
+#if MB(BTT_SKR_MINI_E3_V1_0, BIGTREE_SKR_E3_DIP, BTT_SKR_MINI_E3_V1_2, MKS_ROBIN_LITE)
   // SKR Mini E3 boards use PA8 as FAN_PIN, so TIMER 1 is used for Fan PWM.
   #ifdef STM32_HIGH_DENSITY
     #define SERVO0_TIMER_NUM 8  // tone.cpp uses Timer 4

Marlin/src/core/boards.h

 #define BOARD_MKS_ROBIN_NANO          4008  // MKS Robin Nano (STM32F103VET6)
 #define BOARD_MKS_ROBIN_LITE          4009  // MKS Robin Lite/Lite2 (STM32F103RCT6)
 #define BOARD_BIGTREE_SKR_MINI_V1_1   4010  // BigTreeTech SKR Mini v1.1 (STM32F103RC)
-#define BOARD_BIGTREE_SKR_MINI_E3     4011  // BigTreeTech SKR Mini E3 (STM32F103RC)
+#define BOARD_BTT_SKR_MINI_E3_V1_0    4011  // BigTreeTech SKR Mini E3 (STM32F103RC)
-#define BOARD_BIGTREE_SKR_E3_DIP      4012  // BigTreeTech SKR E3 DIP V1.0 (STM32F103RC)
+#define BOARD_BTT_SKR_MINI_E3_V1_2    4012  // BigTreeTech SKR Mini E3 V1.2 (STM32F103RC)
-#define BOARD_BTT_SKR_MINI_E3_V1_2    4013  // BigTreeTech SKR Mini E3 V1.2 (STM32F103RC)
+#define BOARD_BIGTREE_SKR_E3_DIP      4013  // BigTreeTech SKR E3 DIP V1.0 (STM32F103RC)
 #define BOARD_JGAURORA_A5S_A1         4014  // JGAurora A5S A1 (STM32F103ZET6)
 #define BOARD_FYSETC_AIO_II           4015  // FYSETC AIO_II
 #define BOARD_FYSETC_CHEETAH          4016  // FYSETC Cheetah

Marlin/src/inc/SanityCheck.h

 #define BOARD_STM32F1R      -1005
 #define BOARD_STM32F103R    -1006
 #define BOARD_ESP32         -1007
+#define BOARD_BIGTREE_SKR_MINI_E3 -1008
 #if MB(MKS_13)
   #error "BOARD_MKS_13 has been renamed BOARD_MKS_GEN_13. Please update your configuration."
 #elif MB(TRIGORILLA)
   #error "BOARD_STM32F103R has been renamed BOARD_STM32F103RE. Please update your configuration."
 #elif MOTHERBOARD == BOARD_ESP32
   #error "BOARD_ESP32 has been renamed BOARD_ESPRESSIF_ESP32. Please update your configuration."
+#elif MOTHERBOARD == BOARD_BIGTREE_SKR_MINI_E3
+  #error "BOARD_BIGTREE_SKR_MINI_E3 has been renamed BOARD_BTT_SKR_MINI_E3_V1_0. Please update your configuration."
 #endif
 #undef BOARD_MKS_13
 #undef BOARD_TRIGORILLA
 #undef BOARD_STM32F1R
 #undef BOARD_STM32F103R
 #undef BOARD_ESP32
+#undef BOARD_BIGTREE_SKR_MINI_E3
 
 /**
  * Marlin release, version and default string

Marlin/src/pins/lpc1768/pins_BTT_SKR.h

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2019 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/>.
+ *
+ */
+#pragma once
+
+#ifndef MCU_LPC1768
+  #error "Oops! Make sure you have the LPC1768 environment selected in your IDE."
+#endif
+
+// Ignore temp readings during development.
+//#define BOGUS_TEMPERATURE_GRACE_PERIOD 2000
+
+//
+// Limit Switches
+//
+#define X_MIN_PIN          P1_29
+#define X_MAX_PIN          P1_28
+#define Y_MIN_PIN          P1_27
+#define Y_MAX_PIN          P1_26
+#define Z_MIN_PIN          P1_25
+#define Z_MAX_PIN          P1_24
+
+//
+// Steppers
+//
+
+#define E1_STEP_PIN        P0_01
+#define E1_DIR_PIN         P0_00
+#define E1_ENABLE_PIN      P0_10
+
+//
+// Temperature Sensors
+//  3.3V max when defined as an analog input
+//
+#define TEMP_BED_PIN       P0_23_A0   // A0 (T0) - (67) - TEMP_BED_PIN
+#define TEMP_0_PIN         P0_24_A1   // A1 (T1) - (68) - TEMP_0_PIN
+#define TEMP_1_PIN         P0_25_A2   // A2 (T2) - (69) - TEMP_1_PIN
+
+//
+// Heaters / Fans
+//
+#ifndef HEATER_0_PIN
+  #define HEATER_0_PIN     P2_07
+#endif
+#if HOTENDS == 1
+  #ifndef FAN1_PIN
+    #define FAN1_PIN       P2_04
+  #endif
+#else
+  #ifndef HEATER_1_PIN
+    #define HEATER_1_PIN   P2_04
+  #endif
+#endif
+#ifndef FAN_PIN
+  #define FAN_PIN          P2_03
+#endif
+#ifndef HEATER_BED_PIN
+  #define HEATER_BED_PIN   P2_05
+#endif
+
+//
+// LCD / Controller
+//
+#if HAS_SPI_LCD
+  #define BEEPER_PIN       P1_30   // (37) not 5V tolerant
+#endif
+
+//
+// SD Support
+//
+#define ONBOARD_SD_CS_PIN  P0_06   // Chip select for "System" SD card
+
+#if SD_CONNECTION_IS(LCD)
+  #define SCK_PIN          P0_15
+  #define MISO_PIN         P0_17
+  #define MOSI_PIN         P0_18
+#elif SD_CONNECTION_IS(ONBOARD)
+  #undef SD_DETECT_PIN
+  #define SD_DETECT_PIN    P0_27
+  #define SCK_PIN          P0_07
+  #define MISO_PIN         P0_08
+  #define MOSI_PIN         P0_09
+  #define SS_PIN           ONBOARD_SD_CS_PIN
+#elif SD_CONNECTION_IS(CUSTOM_CABLE)
+  #error "No custom SD drive cable defined for this board."
+#endif

Marlin/src/pins/lpc1768/pins_BIGTREE_SKR_V1.1.h → Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_1.h

  */
 #pragma once
 
-#ifndef MCU_LPC1768
-  #error "Oops! Make sure you have the LPC1768 environment selected in your IDE."
-#endif
-
 #define BOARD_INFO_NAME "BIGTREE SKR 1.1"
 
 //
-// Limit Switches
-//
-#define X_MIN_PIN          P1_29
-#define X_MAX_PIN          P1_28
-#define Y_MIN_PIN          P1_27
-#define Y_MAX_PIN          P1_26
-#define Z_MIN_PIN          P1_25
-#define Z_MAX_PIN          P1_24
-
-//
 // Steppers
 //
 #define X_STEP_PIN         P0_04
 #define E0_DIR_PIN         P2_13
 #define E0_ENABLE_PIN      P2_12
 
-#define E1_STEP_PIN        P0_01
-#define E1_DIR_PIN         P0_00
-#define E1_ENABLE_PIN      P0_10
-
-//
-// Temperature Sensors
-//  3.3V max when defined as an analog input
-//
-#define TEMP_BED_PIN       P0_23_A0   // Analog Input
-#define TEMP_0_PIN         P0_24_A1   // Analog Input
-#define TEMP_1_PIN         P0_25_A2   // Analog Input
-
-//
-// Heaters / Fans
-//
-#define HEATER_0_PIN       P2_07
-#if HOTENDS == 1
-  #define FAN1_PIN         P2_04
-#else
-  #define HEATER_1_PIN     P2_04
-#endif
-#define FAN_PIN            P2_03
-#define HEATER_BED_PIN     P2_05
-
 /**
  * LCD / Controller
  *
  */
 
 #if HAS_SPI_LCD
-  #define BEEPER_PIN       P1_30
   #define BTN_EN1          P3_26
   #define BTN_EN2          P3_25
   #define BTN_ENC          P2_11
   #endif
 #endif
 
-#define ONBOARD_SD_CS_PIN  P0_06   // Chip select for "System" SD card
-
 #if SD_CONNECTION_IS(LCD)
-  #define SCK_PIN          P0_15
-  #define MISO_PIN         P0_17
-  #define MOSI_PIN         P0_18
   #define SS_PIN           P1_23
-#elif SD_CONNECTION_IS(ONBOARD)
-  #undef SD_DETECT_PIN
-  #define SD_DETECT_PIN    P0_27
-  #define SCK_PIN          P0_07
-  #define MISO_PIN         P0_08
-  #define MOSI_PIN         P0_09
-  #define SS_PIN           ONBOARD_SD_CS_PIN
-#elif SD_CONNECTION_IS(CUSTOM_CABLE)
-  #error "No custom SD drive cable defined for this board."
 #endif
 
 // Trinamic driver support
   #endif // SOFTWARE_DRIVER_ENABLE
 
 #endif
+
+// Include common SKR pins
+#include "pins_BTT_SKR.h"

Marlin/src/pins/lpc1768/pins_BIGTREE_SKR_V1.3.h → Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_3.h

  */
 #pragma once
 
-#ifndef MCU_LPC1768
-  #error "Oops! Make sure you have the LPC1768 environment selected in your IDE."
-#endif
-
 #define BOARD_INFO_NAME "BIGTREE SKR 1.3"
 
-// Ignore temp readings during development.
-//#define BOGUS_TEMPERATURE_GRACE_PERIOD 2000
-
 //
 // Servos
 //
 #endif
 
 //
-// Limit Switches
-//
-#define X_MIN_PIN          P1_29
-#define X_MAX_PIN          P1_28
-#define Y_MIN_PIN          P1_27
-#define Y_MAX_PIN          P1_26
-#define Z_MIN_PIN          P1_25
-#define Z_MAX_PIN          P1_24
-
-//
 // Z Probe (when not Z_MIN_PIN)
 //
 #ifndef Z_MIN_PROBE_PIN
   #define E0_CS_PIN        P1_08
 #endif
 
-#define E1_STEP_PIN        P0_01
-#define E1_DIR_PIN         P0_00
-#define E1_ENABLE_PIN      P0_10
 #ifndef E1_CS_PIN
   #define E1_CS_PIN        P1_01
 #endif
   #define TMC_BAUD_RATE 19200
 #endif
 
-//
-// Temperature Sensors
-//  3.3V max when defined as an analog input
-//
-#define TEMP_BED_PIN       P0_23_A0   // A0 (T0) - (67) - TEMP_BED_PIN
-#define TEMP_0_PIN         P0_24_A1   // A1 (T1) - (68) - TEMP_0_PIN
-#define TEMP_1_PIN         P0_25_A2   // A2 (T2) - (69) - TEMP_1_PIN
-
-//
-// Heaters / Fans
-//
-#ifndef HEATER_0_PIN
-  #define HEATER_0_PIN     P2_07
-#endif
-#if HOTENDS == 1
-  #ifndef FAN1_PIN
-    #define FAN1_PIN       P2_04
-  #endif
-#else
-  #ifndef HEATER_1_PIN
-    #define HEATER_1_PIN   P2_04
-  #endif
-#endif
-#ifndef FAN_PIN
-  #define FAN_PIN          P2_03
-#endif
-#ifndef HEATER_BED_PIN
-  #define HEATER_BED_PIN   P2_05
-#endif
-
 /**
  *              _____                                             _____
  *          NC | · · | GND                                    5V | · · | GND
  *              EXP2                                              EXP1
  */
 #if HAS_SPI_LCD
-  #define BEEPER_PIN       P1_30   // (37) not 5V tolerant
   #define BTN_ENC          P0_28   // (58) open-drain
 
   #if ENABLED(CR10_STOCKDISPLAY)
   #define SDCARD_CONNECTION LCD
 #endif
 
-#define ONBOARD_SD_CS_PIN  P0_06   // Chip select for "System" SD card
-
 #if SD_CONNECTION_IS(LCD)
-  #define SCK_PIN          P0_15
-  #define MISO_PIN         P0_17
-  #define MOSI_PIN         P0_18
   #define SS_PIN           P0_16
-#elif SD_CONNECTION_IS(ONBOARD)
-  #undef SD_DETECT_PIN
-  #define SD_DETECT_PIN    P0_27
-  #define SCK_PIN          P0_07
-  #define MISO_PIN         P0_08
-  #define MOSI_PIN         P0_09
-  #define SS_PIN           ONBOARD_SD_CS_PIN
-#elif SD_CONNECTION_IS(CUSTOM_CABLE)
-  #error "No custom SD drive cable defined for this board."
 #endif
 
 /**
  *   P0_27  (57) (Open collector)
  *   P0_28  (58) (Open collector)
  */
+
+// Include common SKR pins
+#include "pins_BTT_SKR.h"

Marlin/src/pins/pins.h

 #elif MB(SELENA_COMPACT)
   #include "lpc1768/pins_SELENA_COMPACT.h"      // LPC1768                                env:LPC1768
 #elif MB(BIGTREE_SKR_V1_1)
-  #include "lpc1768/pins_BIGTREE_SKR_V1.1.h"    // LPC1768                                env:LPC1768
+  #include "lpc1768/pins_BTT_SKR_V1_1.h"        // LPC1768                                env:LPC1768
 #elif MB(BIQU_B300_V1_0)
   #include "lpc1768/pins_BIQU_B300_V1.0.h"      // LPC1768                                env:LPC1768
 #elif MB(BIGTREE_SKR_V1_3)
-  #include "lpc1768/pins_BIGTREE_SKR_V1.3.h"    // LPC1768                                env:LPC1768
+  #include "lpc1768/pins_BTT_SKR_V1_3.h"        // LPC1768                                env:LPC1768
 #elif MB(GMARSH_X6_REV1)
   #include "lpc1768/pins_GMARSH_X6_REV1.h"      // LPC1768                                env:LPC1768
 
 #elif MB(MKS_ROBIN_LITE)
   #include "stm32/pins_MKS_ROBIN_LITE.h"        // STM32F1                                env:mks_robin_lite
 #elif MB(BIGTREE_SKR_MINI_V1_1)
-  #include "stm32/pins_BIGTREE_SKR_MINI_V1_1.h" // STM32F1                                env:STM32F103RC_bigtree env:STM32F103RC_bigtree_512K env:STM32F103RC_bigtree_NOUSB env:STM32F103RC_bigtree_512K_NOUSB
+  #include "stm32/pins_BTT_SKR_MINI_V1_1.h"     // STM32F1                                env:STM32F103RC_bigtree env:STM32F103RC_bigtree_512K env:STM32F103RC_bigtree_NOUSB env:STM32F103RC_bigtree_512K_NOUSB
+#elif MB(BTT_SKR_MINI_E3_V1_0)
+  #include "stm32/pins_BTT_SKR_MINI_E3_V1_0.h"  // STM32F1                                env:STM32F103RC_bigtree env:STM32F103RC_bigtree_512K env:STM32F103RC_bigtree_NOUSB env:STM32F103RC_bigtree_512K_NOUSB
 #elif MB(BTT_SKR_MINI_E3_V1_2)
   #include "stm32/pins_BTT_SKR_MINI_E3_V1_2.h"  // STM32F1                                env:STM32F103RC_bigtree env:STM32F103RC_bigtree_512K env:STM32F103RC_bigtree_NOUSB env:STM32F103RC_bigtree_512K_NOUSB
-#elif MB(BIGTREE_SKR_MINI_E3)
-  #include "stm32/pins_BIGTREE_SKR_MINI_E3.h"   // STM32F1                                env:STM32F103RC_bigtree env:STM32F103RC_bigtree_512K env:STM32F103RC_bigtree_NOUSB env:STM32F103RC_bigtree_512K_NOUSB
 #elif MB(BIGTREE_SKR_E3_DIP)
-  #include "stm32/pins_BIGTREE_SKR_E3_DIP.h"    // STM32F1                                env:STM32F103RC_bigtree env:STM32F103RC_bigtree_512K env:STM32F103RC_bigtree_NOUSB env:STM32F103RC_bigtree_512K_NOUSB
+  #include "stm32/pins_BTT_SKR_E3_DIP.h"        // STM32F1                                env:STM32F103RC_bigtree env:STM32F103RC_bigtree_512K env:STM32F103RC_bigtree_NOUSB env:STM32F103RC_bigtree_512K_NOUSB
 #elif MB(JGAURORA_A5S_A1)
   #include "stm32/pins_JGAURORA_A5S_A1.h"       // STM32F1                                env:jgaurora_a5s_a1
 #elif MB(FYSETC_AIO_II)
 #elif MB(STEVAL)
   #include "stm32/pins_STEVAL.h"                // STM32F4                                env:STM32F4
 #elif MB(BIGTREE_SKR_PRO_V1_1)
-  #include "stm32/pins_BIGTREE_SKR_PRO_V1.1.h"  // STM32F4                                env:BIGTREE_SKR_PRO
+  #include "stm32/pins_BTT_SKR_PRO_V1_1.h"      // STM32F4                                env:BIGTREE_SKR_PRO
 #elif MB(BIGTREE_BTT002_V1_0)
-  #include "stm32/pins_BIGTREE_BTT002_V1.0.h"   // STM32F4                                env:BIGTREE_BTT002
+  #include "stm32/pins_BTT_BTT002_V1_0.h"       // STM32F4                                env:BIGTREE_BTT002
 #elif MB(LERDGE_K)
   #include "stm32/pins_LERDGE_K.h"              // STM32F4                                env:STM32F4
 #elif MB(LERDGE_X)

Marlin/src/pins/stm32/pins_BIGTREE_SKR_MINI_E3.h → Marlin/src/pins/stm32/pins_BTT_SKR_MINI_E3.h

   #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
 #endif
 
-#define BOARD_INFO_NAME "BIGTREE SKR Mini E3"
-
 // Release PB3/PB4 (E0 STP/DIR) from JTAG pins
 #define DISABLE_JTAG
 
 // Filament Runout Sensor
 //
 #ifndef FIL_RUNOUT_PIN
-  #define FIL_RUNOUT_PIN   PC15
+  #define FIL_RUNOUT_PIN   PC15   // "E0-STOP"
 #endif
 
 //
 #define E0_STEP_PIN        PB3
 #define E0_DIR_PIN         PB4
 
-#if HAS_DRIVER(TMC2209)
-  /**
-   * TMC2209 stepper drivers
-   * Hardware serial communication ports.
-   */
-  #define X_HARDWARE_SERIAL  Serial4
-  #define Y_HARDWARE_SERIAL  Serial4
-  #define Z_HARDWARE_SERIAL  Serial4
-  #define E0_HARDWARE_SERIAL Serial4
-#endif
-
 //
 // Temperature Sensors
 //
  *                 EXP1
  */
 #if HAS_SPI_LCD
-  #define BEEPER_PIN       PB5
-  #define BTN_ENC          PB6
 
   #if ENABLED(CR10_STOCKDISPLAY)
+
+    #define BEEPER_PIN     PB5
+    #define BTN_ENC        PB6
+
     #define LCD_PINS_RS    PB8
 
     #define BTN_EN1        PA9
     #define LCD_PINS_ENABLE PB7
     #define LCD_PINS_D4    PB9
 
+  #elif ENABLED(ZONESTAR_LCD)     // ANET A8 LCD Controller - Must convert to 3.3V - CONNECTING TO 5V WILL DAMAGE THE BOARD!
+
+    #define LCD_PINS_RS    PB9
+    #define LCD_PINS_ENABLE PB6
+    #define LCD_PINS_D4    PB8
+    #define LCD_PINS_D5    PA10
+    #define LCD_PINS_D6    PA9
+    #define LCD_PINS_D7    PB5
+    #define ADC_KEYPAD_PIN PA1    // Repurpose servo pin for ADC - CONNECTING TO 5V WILL DAMAGE THE BOARD!
+
   #elif ENABLED(MKS_MINI_12864)
 
     /** Creality Ender-2 display pinout
      *                   -----
      *                    EXP1
      */
-
+    #define BTN_EN1        PA9
-    #define BTN_EN1      PA9
+    #define BTN_EN2        PA10
-    #define BTN_EN2      PA10
+    #define DOGLCD_CS      PB8
-    #define DOGLCD_CS    PB8
+    #define DOGLCD_A0      PB9
-    #define DOGLCD_A0    PB9
+    #define DOGLCD_SCK     PA15
-    #define DOGLCD_SCK   PA15
+    #define DOGLCD_MOSI    PB7
-    #define DOGLCD_MOSI  PB7
     #define FORCE_SOFT_SPI
     #define LCD_BACKLIGHT_PIN -1
 
   #else
-    #error "Only CR10_STOCKDISPLAY and MKS_MINI_12864 are currently supported on the BIGTREE_SKR_MINI_E3."
+
+    #error "Only CR10_STOCKDISPLAY, ZONESTAR_LCD, and MKS_MINI_12864 are currently supported on the BIGTREE_SKR_MINI_E3."
+
   #endif
 
 #endif // HAS_SPI_LCD
   #define SDCARD_CONNECTION ONBOARD
 #endif
 
-#define ON_BOARD_SPI_DEVICE 1    //SPI1
+#define ON_BOARD_SPI_DEVICE 1    // SPI1
 #define ONBOARD_SD_CS_PIN  PA4   // Chip select for "System" SD card

Marlin/src/pins/stm32/pins_BTT_SKR_MINI_E3_V1_0.h

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2019 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/>.
+ *
+ */
+#pragma once
+
+#include "pins_BTT_SKR_MINI_E3.h"
+
+#define BOARD_INFO_NAME "BIGTREE SKR Mini E3"
+
+/**
+ * TMC2209 stepper drivers
+ * Hardware serial communication ports.
+ */
+#if HAS_DRIVER(TMC2209)
+  #define X_HARDWARE_SERIAL  Serial4
+  #define Y_HARDWARE_SERIAL  Serial4
+  #define Z_HARDWARE_SERIAL  Serial4
+  #define E0_HARDWARE_SERIAL Serial4
+#endif

Marlin/src/pins/stm32/pins_BTT_SKR_MINI_E3_V1_2.h

  */
 #pragma once
 
-#ifndef TARGET_STM32F1
+#include "pins_BTT_SKR_MINI_E3.h"
-  #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
-#endif
 
 #define BOARD_INFO_NAME "BIGTREE SKR Mini E3 V1.2"
 
-// Release PB3/PB4 (E0 STP/DIR) from JTAG pins
+#define NEOPIXEL_PIN       PC7  // LED driving pin
-#define DISABLE_JTAG
-
-// Ignore temp readings during development.
-//#define BOGUS_TEMPERATURE_GRACE_PERIOD 2000
-
-#define FLASH_EEPROM_EMULATION
-#define EEPROM_PAGE_SIZE     uint16(0x800) // 2KB
-#define EEPROM_START_ADDRESS uint32(0x8000000 + (STM32_FLASH_SIZE) * 1024 - 2 * EEPROM_PAGE_SIZE)
-#undef E2END
-#define E2END                (EEPROM_PAGE_SIZE - 1) // 2KB
-
-//
-// Servos
-//
-#define SERVO0_PIN         PA1
-
-//
-// Limit Switches
-//
-#define X_STOP_PIN         PC0
-#define Y_STOP_PIN         PC1
-#define Z_STOP_PIN         PC2
-
-//
-// Z Probe must be this pins
-//
-#define Z_MIN_PROBE_PIN    PC14
-
-//
-// Filament Runout Sensor
-//
-#ifndef FIL_RUNOUT_PIN
-  #define FIL_RUNOUT_PIN   PC15   // "E0-STOP"
-#endif
-
-//
-// Steppers
-//
-#define X_ENABLE_PIN       PB14
-#define X_STEP_PIN         PB13
-#define X_DIR_PIN          PB12
-
-#define Y_ENABLE_PIN       PB11
-#define Y_STEP_PIN         PB10
-#define Y_DIR_PIN          PB2
-
-#define Z_ENABLE_PIN       PB1
-#define Z_STEP_PIN         PB0
-#define Z_DIR_PIN          PC5
-
-#define E0_ENABLE_PIN      PD2
-#define E0_STEP_PIN        PB3
-#define E0_DIR_PIN         PB4
 
+/**
+ * TMC2208/TMC2209 stepper drivers
+ */
 #if HAS_TMC220x
-  /**
-   * TMC2208/TMC2209 stepper drivers
-   */
   //
   // Software serial
   //
   // Reduce baud rate to improve software serial reliability
   #define TMC_BAUD_RATE 19200
 #endif
-
-//
-// Temperature Sensors
-//
-#define TEMP_0_PIN         PA0   // Analog Input
-#define TEMP_BED_PIN       PC3   // Analog Input
-
-//
-// Heaters / Fans
-//
-#define HEATER_0_PIN       PC8   // EXTRUDER
-#define HEATER_BED_PIN     PC9   // BED
-#define FAN_PIN            PA8
-
-//
-// USB connect control
-//
-#define USB_CONNECT_PIN    PC13
-#define USB_CONNECT_INVERTING false
-
-#define NEOPIXEL_PIN       PC7  // LED driving pin
-
-#define SD_DETECT_PIN      PC4
-
-/**
- *                 _____
- *             5V | · · | GND
- *  (LCD_EN) PB7  | · · | PB8  (LCD_RS)
- *  (LCD_D4) PB9  | · · | PA10 (BTN_EN2)
- *          RESET | · · | PA9  (BTN_EN1)
- * (BTN_ENC) PB6  | · · | PB5  (BEEPER)
- *                 -----
- *                 EXP1
- */
-#if HAS_SPI_LCD
-  #define BEEPER_PIN       PB5
-  #define BTN_ENC          PB6
-
-  #if ENABLED(CR10_STOCKDISPLAY)
-    #define LCD_PINS_RS    PB8
-
-    #define BTN_EN1        PA9
-    #define BTN_EN2        PA10
-
-    #define LCD_PINS_ENABLE PB7
-    #define LCD_PINS_D4    PB9
-
-  #else
-    #error "Only CR10_STOCKDISPLAY is currently supported on the BIGTREE_SKR_MINI_E3 V1.2."
-  #endif
-
-#endif // HAS_SPI_LCD
-
-//
-// SD Support
-//
-#define HAS_ONBOARD_SD
-
-#ifndef SDCARD_CONNECTION
-  #define SDCARD_CONNECTION ONBOARD
-#endif
-
-#define ON_BOARD_SPI_DEVICE 1    //SPI1
-#define ONBOARD_SD_CS_PIN  PA4   // Chip select for "System" SD card

buildroot/share/tests/STM32F103RC_bigtree_NOUSB-tests

 # Build with the default configurations
 #
 restore_configs
-opt_set MOTHERBOARD BOARD_BIGTREE_SKR_MINI_E3
+opt_set MOTHERBOARD BOARD_BTT_SKR_MINI_E3_V1_0
 opt_set SERIAL_PORT 1
 opt_set SERIAL_PORT_2 -1
 exec_test $1 $2 "Bigtreetech SKR Mini E3 - Basic Configuration"