✨ BigTreeTech SKR mini E3 V3.0 (STM32G0B1RET6) (#23283)

Marlin/src/HAL/STM32/HAL.h

@@ -130,7 +130,11 @@
 // Types
 // ------------------------
 
-typedef int16_t pin_t;
+#ifdef STM32G0B1xx
+  typedef int32_t pin_t;
+#else
+  typedef int16_t pin_t;
+#endif
 
 #define HAL_SERVO_LIB libServo
 #define PAUSE_SERVO_OUTPUT() libServo::pause_all_servos()

Marlin/src/HAL/STM32/HAL_MinSerial.cpp

@@ -135,7 +135,7 @@ void install_min_serial() {
   HAL_min_serial_out = &TX;
 }
 
-#if DISABLED(DYNAMIC_VECTORTABLE) && DISABLED(STM32F0xx) // Cortex M0 can't jump to a symbol that's too far from the current function, so we work around this in exception_arm.cpp
+#if NONE(DYNAMIC_VECTORTABLE, STM32F0xx, STM32G0xx) // Cortex M0 can't jump to a symbol that's too far from the current function, so we work around this in exception_arm.cpp
 extern "C" {
   __attribute__((naked)) void JumpHandler_ASM() {
     __asm__ __volatile__ (

Marlin/src/HAL/STM32/timers.cpp

@@ -67,7 +67,7 @@
   #endif
 #endif
 
-#ifdef STM32F0xx
+#if defined(STM32F0xx) || defined(STM32G0xx)
   #define MCU_STEP_TIMER 16
   #define MCU_TEMP_TIMER 17
 #elif defined(STM32F1xx)

Marlin/src/HAL/shared/backtrace/unwmemaccess.cpp

@@ -41,7 +41,7 @@
   #define START_FLASH_ADDR  0x00000000
   #define END_FLASH_ADDR    0x00080000
 
-#elif defined(__STM32F1__) || defined(STM32F1xx) || defined(STM32F0xx)
+#elif defined(__STM32F1__) || defined(STM32F1xx) || defined(STM32F0xx) || defined(STM32G0xx)
 
   // For STM32F103ZET6/STM32F103VET6/STM32F0xx
   //  SRAM  (0x20000000 - 0x20010000) (64kb)

Marlin/src/HAL/shared/cpu_exception/exception_arm.cpp

@@ -101,7 +101,7 @@ struct __attribute__((packed)) ContextSavedFrame {
   uint32_t ELR;
 };
 
-#if DISABLED(STM32F0xx)
+#if NONE(STM32F0xx, STM32G0xx)
   extern "C"
   __attribute__((naked)) void CommonHandler_ASM() {
     __asm__ __volatile__ (

Marlin/src/core/boards.h

@@ -324,39 +324,40 @@
 #define BOARD_BTT_SKR_MINI_E3_V1_0    4024  // BigTreeTech SKR Mini E3 (STM32F103RC)
 #define BOARD_BTT_SKR_MINI_E3_V1_2    4025  // BigTreeTech SKR Mini E3 V1.2 (STM32F103RC)
 #define BOARD_BTT_SKR_MINI_E3_V2_0    4026  // BigTreeTech SKR Mini E3 V2.0 (STM32F103RC / STM32F103RE)
-#define BOARD_BTT_SKR_MINI_MZ_V1_0    4027  // BigTreeTech SKR Mini MZ V1.0 (STM32F103RC)
-#define BOARD_BTT_SKR_E3_DIP          4028  // BigTreeTech SKR E3 DIP V1.0 (STM32F103RC / STM32F103RE)
-#define BOARD_BTT_SKR_CR6             4029  // BigTreeTech SKR CR6 v1.0 (STM32F103RE)
-#define BOARD_JGAURORA_A5S_A1         4030  // JGAurora A5S A1 (STM32F103ZET6)
-#define BOARD_FYSETC_AIO_II           4031  // FYSETC AIO_II
-#define BOARD_FYSETC_CHEETAH          4032  // FYSETC Cheetah
-#define BOARD_FYSETC_CHEETAH_V12      4033  // FYSETC Cheetah V1.2
-#define BOARD_LONGER3D_LK             4034  // Alfawise U20/U20+/U30 (Longer3D LK1/2) / STM32F103VET6
-#define BOARD_CCROBOT_MEEB_3DP        4035  // ccrobot-online.com MEEB_3DP (STM32F103RC)
-#define BOARD_CHITU3D_V5              4036  // Chitu3D TronXY X5SA V5 Board
-#define BOARD_CHITU3D_V6              4037  // Chitu3D TronXY X5SA V6 Board
-#define BOARD_CHITU3D_V9              4038  // Chitu3D TronXY X5SA V9 Board
-#define BOARD_CREALITY_V4             4039  // Creality v4.x (STM32F103RE)
-#define BOARD_CREALITY_V427           4040  // Creality v4.2.7 (STM32F103RE)
-#define BOARD_CREALITY_V4210          4041  // Creality v4.2.10 (STM32F103RE) as found in the CR-30
-#define BOARD_CREALITY_V431           4042  // Creality v4.3.1 (STM32F103RE)
-#define BOARD_CREALITY_V431_A         4043  // Creality v4.3.1a (STM32F103RE)
-#define BOARD_CREALITY_V431_B         4044  // Creality v4.3.1b (STM32F103RE)
-#define BOARD_CREALITY_V431_C         4045  // Creality v4.3.1c (STM32F103RE)
-#define BOARD_CREALITY_V431_D         4046  // Creality v4.3.1d (STM32F103RE)
-#define BOARD_CREALITY_V452           4047  // Creality v4.5.2 (STM32F103RE)
-#define BOARD_CREALITY_V453           4048  // Creality v4.5.3 (STM32F103RE)
-#define BOARD_CREALITY_V24S1          4049  // Creality v2.4.S1 (STM32F103RE) v101 as found in the Ender 7
-#define BOARD_TRIGORILLA_PRO          4050  // Trigorilla Pro (STM32F103ZET6)
-#define BOARD_FLY_MINI                4051  // FLYmaker FLY MINI (STM32F103RCT6)
-#define BOARD_FLSUN_HISPEED           4052  // FLSUN HiSpeedV1 (STM32F103VET6)
-#define BOARD_BEAST                   4053  // STM32F103RET6 Libmaple-based controller
-#define BOARD_MINGDA_MPX_ARM_MINI     4054  // STM32F103ZET6 Mingda MD-16
-#define BOARD_GTM32_PRO_VD            4055  // STM32F103VET6 controller
-#define BOARD_ZONESTAR_ZM3E2          4056  // Zonestar ZM3E2    (STM32F103RCT6)
-#define BOARD_ZONESTAR_ZM3E4          4057  // Zonestar ZM3E4 V1 (STM32F103VCT6)
-#define BOARD_ZONESTAR_ZM3E4V2        4058  // Zonestar ZM3E4 V2 (STM32F103VCT6)
-#define BOARD_ERYONE_ERY32_MINI       4059  // Eryone Ery32 mini (STM32F103VET6)
+#define BOARD_BTT_SKR_MINI_E3_V3_0    4027  // BigTreeTech SKR Mini E3 V3.0 (STM32G0B1RE)
+#define BOARD_BTT_SKR_MINI_MZ_V1_0    4028  // BigTreeTech SKR Mini MZ V1.0 (STM32F103RC)
+#define BOARD_BTT_SKR_E3_DIP          4029  // BigTreeTech SKR E3 DIP V1.0 (STM32F103RC / STM32F103RE)
+#define BOARD_BTT_SKR_CR6             4030  // BigTreeTech SKR CR6 v1.0 (STM32F103RE)
+#define BOARD_JGAURORA_A5S_A1         4031  // JGAurora A5S A1 (STM32F103ZET6)
+#define BOARD_FYSETC_AIO_II           4032  // FYSETC AIO_II
+#define BOARD_FYSETC_CHEETAH          4033  // FYSETC Cheetah
+#define BOARD_FYSETC_CHEETAH_V12      4034  // FYSETC Cheetah V1.2
+#define BOARD_LONGER3D_LK             4035  // Alfawise U20/U20+/U30 (Longer3D LK1/2) / STM32F103VET6
+#define BOARD_CCROBOT_MEEB_3DP        4036  // ccrobot-online.com MEEB_3DP (STM32F103RC)
+#define BOARD_CHITU3D_V5              4037  // Chitu3D TronXY X5SA V5 Board
+#define BOARD_CHITU3D_V6              4038  // Chitu3D TronXY X5SA V6 Board
+#define BOARD_CHITU3D_V9              4039  // Chitu3D TronXY X5SA V9 Board
+#define BOARD_CREALITY_V4             4040  // Creality v4.x (STM32F103RE)
+#define BOARD_CREALITY_V427           4041  // Creality v4.2.7 (STM32F103RE)
+#define BOARD_CREALITY_V4210          4042  // Creality v4.2.10 (STM32F103RE) as found in the CR-30
+#define BOARD_CREALITY_V431           4043  // Creality v4.3.1 (STM32F103RE)
+#define BOARD_CREALITY_V431_A         4044  // Creality v4.3.1a (STM32F103RE)
+#define BOARD_CREALITY_V431_B         4045  // Creality v4.3.1b (STM32F103RE)
+#define BOARD_CREALITY_V431_C         4046  // Creality v4.3.1c (STM32F103RE)
+#define BOARD_CREALITY_V431_D         4047  // Creality v4.3.1d (STM32F103RE)
+#define BOARD_CREALITY_V452           4048  // Creality v4.5.2 (STM32F103RE)
+#define BOARD_CREALITY_V453           4049  // Creality v4.5.3 (STM32F103RE)
+#define BOARD_CREALITY_V24S1          4050  // Creality v2.4.S1 (STM32F103RE) v101 as found in the Ender 7
+#define BOARD_TRIGORILLA_PRO          4051  // Trigorilla Pro (STM32F103ZET6)
+#define BOARD_FLY_MINI                4052  // FLYmaker FLY MINI (STM32F103RCT6)
+#define BOARD_FLSUN_HISPEED           4053  // FLSUN HiSpeedV1 (STM32F103VET6)
+#define BOARD_BEAST                   4054  // STM32F103RET6 Libmaple-based controller
+#define BOARD_MINGDA_MPX_ARM_MINI     4055  // STM32F103ZET6 Mingda MD-16
+#define BOARD_GTM32_PRO_VD            4056  // STM32F103VET6 controller
+#define BOARD_ZONESTAR_ZM3E2          4057  // Zonestar ZM3E2    (STM32F103RCT6)
+#define BOARD_ZONESTAR_ZM3E4          4058  // Zonestar ZM3E4 V1 (STM32F103VCT6)
+#define BOARD_ZONESTAR_ZM3E4V2        4059  // Zonestar ZM3E4 V2 (STM32F103VCT6)
+#define BOARD_ERYONE_ERY32_MINI       4060  // Eryone Ery32 mini (STM32F103VET6)
 
 //
 // ARM Cortex-M4F

Marlin/src/module/stepper.cpp

@@ -1380,7 +1380,7 @@ void Stepper::set_directions() {
     }
 
     FORCE_INLINE int32_t Stepper::_eval_bezier_curve(const uint32_t curr_step) {
-      #if defined(__arm__) || defined(__thumb__)
+      #if (defined(__arm__) || defined(__thumb__)) && !defined(STM32G0B1xx) // TODO: Test define STM32G0xx versus STM32G0B1xx
 
         // For ARM Cortex M3/M4 CPUs, we have the optimized assembler version, that takes 43 cycles to execute
         uint32_t flo = 0;

Marlin/src/pins/pins.h

@@ -527,6 +527,8 @@
   #include "stm32f1/pins_BTT_SKR_MINI_E3_V1_2.h"  // STM32F1                              env:STM32F103RC_btt env:STM32F103RC_btt_USB env:STM32F103RC_btt_maple env:STM32F103RC_btt_USB_maple
 #elif MB(BTT_SKR_MINI_E3_V2_0)
   #include "stm32f1/pins_BTT_SKR_MINI_E3_V2_0.h"  // STM32F1                              env:STM32F103RC_btt env:STM32F103RC_btt_USB env:STM32F103RE_btt env:STM32F103RE_btt_USB env:STM32F103RC_btt_maple env:STM32F103RC_btt_USB_maple env:STM32F103RE_btt_maple env:STM32F103RE_btt_USB_maple
+#elif MB(BTT_SKR_MINI_E3_V3_0)
+  #include "stm32g0/pins_BTT_SKR_MINI_E3_V3_0.h"  // STM32G0                              env:STM32G0B1RE_btt
 #elif MB(BTT_SKR_MINI_MZ_V1_0)
   #include "stm32f1/pins_BTT_SKR_MINI_MZ_V1_0.h"  // STM32F1                              env:STM32F103RC_btt env:STM32F103RC_btt_USB env:STM32F103RC_btt_maple env:STM32F103RC_btt_USB_maple
 #elif MB(BTT_SKR_E3_DIP)

Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3_common.h

@@ -206,7 +206,7 @@
       /**
        * TFTGLCD_PANEL_SPI display pinout
        *
-       *               Board                                      Display
+       *               Board                                        Display
        *               ------                                       ------
        *           5V | 1  2 | GND                (SPI1-MISO) MISO | 1  2 | SCK   (SPI1-SCK)
        * (FREE)   PB7 | 3  4 | PB8  (LCD_CS)      (PA9)     LCD_CS | 3  4 | SD_CS (PA10)
@@ -249,7 +249,7 @@
   /**
    * FYSETC TFT TFT81050 display pinout
    *
-   *               Board                                      Display
+   *               Board                                        Display
    *               ------                                       ------
    *           5V | 1  2 | GND                (SPI1-MISO) MISO | 1  2 | SCK   (SPI1-SCK)
    * (FREE)   PB7 | 3  4 | PB8  (LCD_CS)      (PA9)  MOD_RESET | 3  4 | SD_CS (PA10)

Marlin/src/pins/stm32g0/pins_BTT_SKR_MINI_E3_V3_0.h

@@ -0,0 +1,332 @@
+/**
+ * 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
+
+//#define BOARD_CUSTOM_BUILD_FLAGS -DTONE_CHANNEL=4 -DTONE_TIMER=4 -DTIMER_TONE=4
+
+#ifndef BOARD_INFO_NAME
+  #define BOARD_INFO_NAME "BTT SKR Mini E3 V3.0"
+#endif
+
+#define USES_DIAG_JUMPERS
+
+// Ignore temp readings during development.
+//#define BOGUS_TEMPERATURE_GRACE_PERIOD    2000
+
+#define LED_PIN                             PD8
+
+// Onboard I2C EEPROM
+#if EITHER(NO_EEPROM_SELECTED, I2C_EEPROM)
+  #undef NO_EEPROM_SELECTED
+  #define I2C_EEPROM
+  #define SOFT_I2C_EEPROM                         // Force the use of Software I2C
+  #define I2C_SCL_PIN                       PB6
+  #define I2C_SDA_PIN                       PB7
+  #define MARLIN_EEPROM_SIZE              0x1000  // 4KB
+#endif
+
+//
+// Servos
+//
+#define SERVO0_PIN                          PA1   // SERVOS
+
+//
+// Limit Switches
+//
+#define X_STOP_PIN                          PC0   // X-STOP
+#define Y_STOP_PIN                          PC1   // Y-STOP
+#define Z_STOP_PIN                          PC2   // Z-STOP
+
+//
+// Z Probe must be this pin
+//
+#define Z_MIN_PROBE_PIN                     PC14  // PROBE
+
+//
+// Filament Runout Sensor
+//
+#ifndef FIL_RUNOUT_PIN
+  #define FIL_RUNOUT_PIN                    PC15  // E0-STOP
+#endif
+
+//
+// Power-loss Detection
+//
+#ifndef POWER_LOSS_PIN
+  #define POWER_LOSS_PIN                    PC12  // Power Loss Detection: PWR-DET
+#endif
+
+#ifndef NEOPIXEL_PIN
+  #define NEOPIXEL_PIN                      PA8   // LED driving pin
+#endif
+
+#ifndef PS_ON_PIN
+  #define PS_ON_PIN                         PC13  // Power Supply Control
+#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                       PD1
+#define E0_STEP_PIN                         PB3
+#define E0_DIR_PIN                          PB4
+
+#if HAS_TMC_UART
+  /**
+   * TMC220x stepper drivers
+   * Hardware serial communication ports
+   */
+  #define X_HARDWARE_SERIAL  MSerial4
+  #define Y_HARDWARE_SERIAL  MSerial4
+  #define Z_HARDWARE_SERIAL  MSerial4
+  #define E0_HARDWARE_SERIAL MSerial4
+
+  // Default TMC slave addresses
+  #ifndef X_SLAVE_ADDRESS
+    #define X_SLAVE_ADDRESS  0
+  #endif
+  #ifndef Y_SLAVE_ADDRESS
+    #define Y_SLAVE_ADDRESS  2
+  #endif
+  #ifndef Z_SLAVE_ADDRESS
+    #define Z_SLAVE_ADDRESS  1
+  #endif
+  #ifndef E0_SLAVE_ADDRESS
+    #define E0_SLAVE_ADDRESS 3
+  #endif
+#endif
+
+//
+// Temperature Sensors
+//
+#define TEMP_0_PIN                          PA0   // Analog Input "TH0"
+#define TEMP_BED_PIN                        PC4   // Analog Input "TB0"
+
+//
+// Heaters / Fans
+//
+#define HEATER_0_PIN                        PC8   // "HE"
+#define HEATER_BED_PIN                      PC9   // "HB"
+#define FAN_PIN                             PC6   // "FAN0"
+#define FAN1_PIN                            PC7   // "FAN1"
+#define FAN2_PIN                            PB15  // "FAN2"
+
+/**
+ *              SKR Mini E3 V3.0
+ *                 ------
+ *             5V | 1  2 | GND
+ *  (LCD_EN) PD6  | 3  4 | PB8  (LCD_RS)
+ *  (LCD_D4) PB9  | 5  6   PA10 (BTN_EN2)
+ *          RESET | 7  8 | PA9  (BTN_EN1)
+ * (BTN_ENC) PA15 | 9 10 | PB5  (BEEPER)
+ *                 ------ 
+ *                  EXP1
+ */
+#define EXP1_09_PIN                         PA15
+#define EXP1_03_PIN                         PD6
+
+#if EITHER(DWIN_CREALITY_LCD, IS_DWIN_MARLINUI)
+  /**
+   *        ------              ------              ------
+   *   VCC | 1  2 | GND    VCC | 1  2 | GND    GND |  2 1 | VCC
+   *     A | 3  4 | B        A | 3  4 | B        B |  4 3 | A
+   *       | 5  6   TX    BEEP | 5  6   ENT    ENT |  6 5 | BEEP
+   *       | 7  8 | RX      TX | 7  8 | RX      RX |  8 7 | TX
+   *  BEEP | 9 10 | ENT        | 9 10 |            | 10 9 |
+   *        ------              ------              ------
+   *         EXP1                DWIN             DWIN (plug)
+   *
+   * All pins are labeled as printed on DWIN PCB. Connect TX-TX, A-A and so on.
+   */
+
+  #error "DWIN_CREALITY_LCD requires a custom cable, see diagram above this line. Comment out this line to continue."
+
+  #define BEEPER_PIN                 EXP1_09_PIN
+  #define BTN_EN1                    EXP1_03_PIN
+  #define BTN_EN2                           PB8
+  #define BTN_ENC                           PB5
+
+#elif HAS_WIRED_LCD
+
+  #if ENABLED(CR10_STOCKDISPLAY)
+
+    #define BEEPER_PIN                      PB5
+    #define BTN_ENC                  EXP1_09_PIN
+
+    #define BTN_EN1                         PA9
+    #define BTN_EN2                         PA10
+
+    #define LCD_PINS_RS                     PB8
+    #define LCD_PINS_ENABLE          EXP1_03_PIN
+    #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!
+
+    #error "CAUTION! ZONESTAR_LCD requires wiring modifications. See 'pins_BTT_SKR_MINI_E3_common.h' for details. Comment out this line to continue."
+
+    #define LCD_PINS_RS                     PB9
+    #define LCD_PINS_ENABLE          EXP1_09_PIN
+    #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 EITHER(MKS_MINI_12864, ENDER2_STOCKDISPLAY)
+
+    #define BTN_ENC                  EXP1_09_PIN
+    #define BTN_EN1                         PA9
+    #define BTN_EN2                         PA10
+
+    #define DOGLCD_CS                       PB8
+    #define DOGLCD_A0                       PB9
+    #define DOGLCD_SCK                      PB5
+    #define DOGLCD_MOSI              EXP1_03_PIN
+
+    #define FORCE_SOFT_SPI
+    #define LCD_BACKLIGHT_PIN               -1
+
+  #elif IS_TFTGLCD_PANEL
+
+    #if ENABLED(TFTGLCD_PANEL_SPI)
+
+      #error "CAUTION! TFTGLCD_PANEL_SPI requires wiring modifications. See 'pins_BTT_SKR_MINI_E3_common.h' for details. Comment out this line to continue."
+
+      /**
+       * TFTGLCD_PANEL_SPI display pinout
+       *
+       *               Board                                        Display
+       *               ------                                       ------
+       *           5V | 1  2 | GND                (SPI1-MISO) MISO | 1  2 | SCK   (SPI1-SCK)
+       * (FREE)   PB7 | 3  4 | PB8  (LCD_CS)      (PA9)     LCD_CS | 3  4 | SD_CS (PA10)
+       * (FREE)   PB9 | 5  6 | PA10 (SD_CS)                 (FREE) | 5  6 | MOSI  (SPI1-MOSI)
+       *        RESET | 7  8 | PA9  (MOD_RESET)   (PB5)     SD_DET | 7  8 | (FREE)
+       * (BEEPER) PB6 | 9 10 | PB5  (SD_DET)                   GND | 9 10 | 5V
+       *               ------                                       ------
+       *                EXP1                                         EXP1
+       *
+       * Needs custom cable:
+       *
+       *    Board             Display
+       *
+       *   EXP1-1 ----------- EXP1-10
+       *   EXP1-2 ----------- EXP1-9
+       *   SPI1-4 ----------- EXP1-6
+       *   EXP1-4 ----------- FREE
+       *   SPI1-3 ----------- EXP1-2
+       *   EXP1-6 ----------- EXP1-4
+       *   EXP1-7 ----------- FREE
+       *   EXP1-8 ----------- EXP1-3
+       *   SPI1-1 ----------- EXP1-1
+       *  EXP1-10 ----------- EXP1-7
+       */
+
+      #define TFTGLCD_CS                    PA9
+
+    #endif
+
+  #else
+    #error "Only CR10_STOCKDISPLAY, ZONESTAR_LCD, ENDER2_STOCKDISPLAY, MKS_MINI_12864, and TFTGLCD_PANEL_(SPI|I2C) are currently supported on the BIGTREE_SKR_MINI_E3."
+  #endif
+
+#endif // HAS_WIRED_LCD
+
+#if BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050)
+
+  #error "CAUTION! LCD_FYSETC_TFT81050 requires wiring modifications. See 'pins_BTT_SKR_MINI_E3_common.h' for details. Comment out this line to continue."
+
+  /**
+   * FYSETC TFT TFT81050 display pinout
+   *
+   *               Board                                        Display
+   *               ------                                       ------
+   *           5V | 1  2 | GND                (SPI1-MISO) MISO | 1  2 | SCK   (SPI1-SCK)
+   * (FREE)   PB7 | 3  4 | PB8  (LCD_CS)      (PA9)  MOD_RESET | 3  4 | SD_CS (PA10)
+   * (FREE)   PB9 | 5  6 | PA10 (SD_CS)       (PB8)     LCD_CS | 5  6 | MOSI  (SPI1-MOSI)
+   *        RESET | 7  8 | PA9  (MOD_RESET)   (PB5)     SD_DET | 7  8 | RESET
+   * (BEEPER) PB6 | 9 10 | PB5  (SD_DET)                   GND | 9 10 | 5V
+   *               ------                                       ------
+   *                EXP1                                         EXP1
+   *
+   * Needs custom cable:
+   *
+   *    Board   Adapter   Display
+   *           _________
+   *   EXP1-1 ----------- EXP1-10
+   *   EXP1-2 ----------- EXP1-9
+   *   SPI1-4 ----------- EXP1-6
+   *   EXP1-4 ----------- EXP1-5
+   *   SPI1-3 ----------- EXP1-2
+   *   EXP1-6 ----------- EXP1-4
+   *   EXP1-7 ----------- EXP1-8
+   *   EXP1-8 ----------- EXP1-3
+   *   SPI1-1 ----------- EXP1-1
+   *  EXP1-10 ----------- EXP1-7
+   */
+
+  #define CLCD_SPI_BUS                         1  // SPI1 connector
+
+  #define BEEPER_PIN                 EXP1_09_PIN
+
+  #define CLCD_MOD_RESET                    PA9
+  #define CLCD_SPI_CS                       PB8
+
+#endif // TOUCH_UI_FTDI_EVE && LCD_FYSETC_TFT81050
+
+//
+// SD Support
+//
+
+#ifndef SDCARD_CONNECTION
+  #define SDCARD_CONNECTION              ONBOARD
+#endif
+
+#if SD_CONNECTION_IS(ONBOARD)
+  #define SD_DETECT_PIN                     PC3
+#elif SD_CONNECTION_IS(LCD) && (BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050) || IS_TFTGLCD_PANEL)
+  #define SD_DETECT_PIN                     PB5
+  #define SD_SS_PIN                         PA10
+#elif SD_CONNECTION_IS(CUSTOM_CABLE)
+  #error "SD CUSTOM_CABLE is not compatible with SKR Mini E3."
+#endif
+
+#define ONBOARD_SPI_DEVICE                     1  // SPI1 -> used only by HAL/STM32F1...
+#define ONBOARD_SD_CS_PIN                   PA4   // Chip select for "System" SD card
+
+#define ENABLE_SPI1
+#define SDSS                   ONBOARD_SD_CS_PIN
+#define SD_SS_PIN              ONBOARD_SD_CS_PIN
+#define SD_SCK_PIN                          PA5
+#define SD_MISO_PIN                         PA6
+#define SD_MOSI_PIN                         PA7

buildroot/share/PlatformIO/boards/marlin_STM32G0B1RE.json

@@ -0,0 +1,47 @@
+{
+  "build": {
+    "core": "stm32",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-DSTM32G0xx -DSTM32G0B1xx",
+    "f_cpu": "64000000L",
+    "framework_extra_flags": {
+      "arduino": "-D__CORTEX_SC=0"
+    },
+    "mcu": "stm32g0b1ret6",
+    "product_line": "STM32G0B1xx",
+    "variant": "STM32G0xx/MARLIN_G0B1RE"
+  },
+  "debug": {
+    "default_tools": [
+      "stlink"
+    ],
+    "jlink_device": "STM32G0B1RE",
+    "onboard_tools": [
+      "stlink"
+    ],
+    "openocd_target": "stm32g0x",
+    "svd_path": "STM32G0B1.svd"
+  },
+  "frameworks": [
+    "arduino",
+    "cmsis",
+    "libopencm3",
+    "stm32cube",
+    "zephyr"
+  ],
+  "name": "STM32G0B1RE",
+  "upload": {
+    "maximum_ram_size": 147456,
+    "maximum_size": 524288,
+    "protocol": "stlink",
+    "protocols": [
+      "stlink",
+      "jlink",
+      "cmsis-dap",
+      "blackmagic",
+      "mbed"
+    ]
+  },
+  "url": "https://www.st.com/content/st_com/en/products/microcontrollers-microprocessors/stm32-32-bit-arm-cortex-mcus/stm32-mainstream-mcus/stm32g0-series/stm32g0x1.html",
+  "vendor": "ST"
+}

buildroot/share/PlatformIO/scripts/generic_create_variant.py

@@ -30,7 +30,7 @@ if pioutil.is_pio_build():
 	else:
 		platform_name = PackageSpec(platform_packages[0]).name
 
-	if platform_name in [ "usb-host-msc", "usb-host-msc-cdc-msc", "usb-host-msc-cdc-msc-2", "usb-host-msc-cdc-msc-3", "tool-stm32duino", "biqu-bx-workaround" ]:
+	if platform_name in [ "usb-host-msc", "usb-host-msc-cdc-msc", "usb-host-msc-cdc-msc-2", "usb-host-msc-cdc-msc-3", "tool-stm32duino", "biqu-bx-workaround", "main" ]:
 		platform_name = "framework-arduinoststm32"
 
 	FRAMEWORK_DIR = platform.get_package_dir(platform_name)

buildroot/share/PlatformIO/variants/STM32G0xx/MARLIN_G0B1RE/PeripheralPins.c

@@ -0,0 +1,428 @@
+/*
+ *******************************************************************************
+ * Copyright (c) 2020-2021, STMicroelectronics
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ *                        opensource.org/licenses/BSD-3-Clause
+ *
+ *******************************************************************************
+ */
+/*
+ * Automatically generated from STM32G0B1R(B-C-E)IxN.xml, STM32G0B1R(B-C-E)TxN.xml
+ * STM32G0C1R(C-E)IxN.xml, STM32G0C1R(C-E)TxN.xml
+ * CubeMX DB release 6.0.30
+ */
+#if !defined(CUSTOM_PERIPHERAL_PINS)
+#include "Arduino.h"
+#include "PeripheralPins.h"
+
+/* =====
+ * Notes:
+ * - The pins mentioned Px_y_ALTz are alternative possibilities which use other
+ *   HW peripheral instances. You can use them the same way as any other "normal"
+ *   pin (i.e. analogWrite(PA7_ALT1, 128);).
+ *
+ * - Commented lines are alternative possibilities which are not used per default.
+ *   If you change them, you will have to know what you do
+ * =====
+ */
+
+//*** ADC ***
+
+#ifdef HAL_ADC_MODULE_ENABLED
+WEAK const PinMap PinMap_ADC[] = {
+  {PA_0,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
+  {PA_1,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
+  {PA_2,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2
+  {PA_3,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 3, 0)}, // ADC1_IN3
+  {PA_4,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 4, 0)}, // ADC1_IN4
+  {PA_5,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC1_IN5
+  {PA_6,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC1_IN6
+  {PA_7,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 7, 0)}, // ADC1_IN7
+  {PB_0,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 8, 0)}, // ADC1_IN8
+  {PB_1,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 9, 0)}, // ADC1_IN9
+  {PB_2,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 10, 0)}, // ADC1_IN10
+  {PB_10, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 11, 0)}, // ADC1_IN11
+  {PB_11, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 15, 0)}, // ADC1_IN15
+  {PB_12, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 16, 0)}, // ADC1_IN16
+  {PC_4,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)}, // ADC1_IN17
+  {PC_5,  ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)}, // ADC1_IN18
+  {NC,    NP,   0}
+};
+#endif
+
+//*** DAC ***
+
+#ifdef HAL_DAC_MODULE_ENABLED
+WEAK const PinMap PinMap_DAC[] = {
+  {PA_4, DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1
+  {PA_5, DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC1_OUT2
+  {NC,   NP,   0}
+};
+#endif
+
+//*** I2C ***
+
+#ifdef HAL_I2C_MODULE_ENABLED
+WEAK const PinMap PinMap_I2C_SDA[] = {
+  {PA_6,         I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C2)},
+  {PA_6_ALT1,    I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF9_I2C3)},
+  {PA_10,        I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
+  {PA_10_ALT1,   I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C2)},
+  {PA_10_R,      I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
+  {PA_10_R_ALT1, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C2)},
+  {PA_12,        I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C2)},
+  {PB_4,         I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C2)},
+  {PB_4_ALT1,    I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C3)},
+  {PB_7,         I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
+  {PB_9,         I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
+  {PB_11,        I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C2)},
+  {PB_14,        I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C2)},
+  {PC_1,         I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C3)},
+  {NC,           NP,   0}
+};
+#endif
+
+#ifdef HAL_I2C_MODULE_ENABLED
+WEAK const PinMap PinMap_I2C_SCL[] = {
+  {PA_7,        I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C2)},
+  {PA_7_ALT1,   I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF9_I2C3)},
+  {PA_9,        I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
+  {PA_9_ALT1,   I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C2)},
+  {PA_9_R,      I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
+  {PA_9_R_ALT1, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C2)},
+  {PA_11,       I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C2)},
+  {PB_3,        I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C2)},
+  {PB_3_ALT1,   I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C3)},
+  {PB_6,        I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
+  {PB_8,        I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
+  {PB_10,       I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C2)},
+  {PB_13,       I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C2)},
+  {PC_0,        I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C3)},
+  {NC,          NP,   0}
+};
+#endif
+
+//*** TIM ***
+
+#ifdef HAL_TIM_MODULE_ENABLED
+WEAK const PinMap PinMap_TIM[] = {
+  {PA_0,       TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1
+  {PA_1,       TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 2, 0)}, // TIM2_CH2
+  {PA_1_ALT1,  TIM15, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15, 1, 1)}, // TIM15_CH1N
+  {PA_2,       TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 3, 0)}, // TIM2_CH3
+  {PA_2_ALT1,  TIM15, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15, 1, 0)}, // TIM15_CH1
+  {PA_3,       TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 4, 0)}, // TIM2_CH4
+  {PA_3_ALT1,  TIM15, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15, 2, 0)}, // TIM15_CH2
+  {PA_4,       TIM14, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM14, 1, 0)}, // TIM14_CH1
+  {PA_5,       TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1
+  {PA_6,       TIM3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 1, 0)}, // TIM3_CH1
+  {PA_6_ALT1,  TIM16, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM16, 1, 0)}, // TIM16_CH1
+  {PA_7,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 1, 1)}, // TIM1_CH1N
+  {PA_7_ALT1,  TIM3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 2, 0)}, // TIM3_CH2
+  {PA_7_ALT2,  TIM14, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM14, 1, 0)}, // TIM14_CH1
+  {PA_7_ALT3,  TIM17, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM17, 1, 0)}, // TIM17_CH1
+  {PA_8,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 1, 0)}, // TIM1_CH1
+  {PA_9,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 2, 0)}, // TIM1_CH2
+  {PA_9_R,     TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 2, 0)}, // TIM1_CH2
+  {PA_10,      TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 3, 0)}, // TIM1_CH3
+  {PA_10_R,    TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 3, 0)}, // TIM1_CH3
+  {PA_11,      TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 4, 0)}, // TIM1_CH4
+  {PA_15,      TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1
+  {PB_0,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 2, 1)}, // TIM1_CH2N
+  {PB_0_ALT1,  TIM3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 3, 0)}, // TIM3_CH3
+  {PB_1,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 3, 1)}, // TIM1_CH3N
+  {PB_1_ALT1,  TIM3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 4, 0)}, // TIM3_CH4
+  {PB_1_ALT2,  TIM14, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM14, 1, 0)}, // TIM14_CH1
+  {PB_3,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 2, 0)}, // TIM1_CH2
+  {PB_3_ALT1,  TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 2, 0)}, // TIM2_CH2
+  {PB_4,       TIM3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 1, 0)}, // TIM3_CH1
+  {PB_5,       TIM3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 2, 0)}, // TIM3_CH2
+  {PB_6,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 3, 0)}, // TIM1_CH3
+  {PB_6_ALT1,  TIM4,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM4, 1, 0)}, // TIM4_CH1
+  {PB_6_ALT2,  TIM16, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM16, 1, 1)}, // TIM16_CH1N
+  {PB_7,       TIM4,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM4, 2, 0)}, // TIM4_CH2
+  {PB_7_ALT1,  TIM17, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM17, 1, 1)}, // TIM17_CH1N
+  {PB_8,       TIM4,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM4, 3, 0)}, // TIM4_CH3
+  {PB_8_ALT1,  TIM16, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM16, 1, 0)}, // TIM16_CH1
+  {PB_9,       TIM4,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM4, 4, 0)}, // TIM4_CH4
+  {PB_9_ALT1,  TIM17, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM17, 1, 0)}, // TIM17_CH1
+  {PB_10,      TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 3, 0)}, // TIM2_CH3
+  {PB_11,      TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 4, 0)}, // TIM2_CH4
+  {PB_13,      TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 1, 1)}, // TIM1_CH1N
+  {PB_13_ALT1, TIM15, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15, 1, 1)}, // TIM15_CH1N
+  {PB_14,      TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 2, 1)}, // TIM1_CH2N
+  {PB_14_ALT1, TIM15, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15, 1, 0)}, // TIM15_CH1
+  {PB_15,      TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 3, 1)}, // TIM1_CH3N
+  {PB_15_ALT1, TIM15, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM15, 1, 1)}, // TIM15_CH1N
+  {PB_15_ALT2, TIM15, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15, 2, 0)}, // TIM15_CH2
+  {PC_1,       TIM15, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM15, 1, 0)}, // TIM15_CH1
+  {PC_2,       TIM15, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM15, 2, 0)}, // TIM15_CH2
+  {PC_4,       TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1
+  {PC_5,       TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 2, 0)}, // TIM2_CH2
+  {PC_6,       TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 3, 0)}, // TIM2_CH3
+  {PC_6_ALT1,  TIM3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 1, 0)}, // TIM3_CH1
+  {PC_7,       TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 4, 0)}, // TIM2_CH4
+  {PC_7_ALT1,  TIM3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 2, 0)}, // TIM3_CH2
+  {PC_8,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 1, 0)}, // TIM1_CH1
+  {PC_8_ALT1,  TIM3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 3, 0)}, // TIM3_CH3
+  {PC_9,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 2, 0)}, // TIM1_CH2
+  {PC_9_ALT1,  TIM3,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 4, 0)}, // TIM3_CH4
+  {PC_10,      TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 3, 0)}, // TIM1_CH3
+  {PC_11,      TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 4, 0)}, // TIM1_CH4
+  {PC_12,      TIM14, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM14, 1, 0)}, // TIM14_CH1
+  {PD_0,       TIM16, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM16, 1, 0)}, // TIM16_CH1
+  {PD_1,       TIM17, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM17, 1, 0)}, // TIM17_CH1
+  {PD_2,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 1, 1)}, // TIM1_CH1N
+  {PD_3,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 2, 1)}, // TIM1_CH2N
+  {PD_4,       TIM1,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM1, 3, 1)}, // TIM1_CH3N
+  {PF_0,       TIM14, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM14, 1, 0)}, // TIM14_CH1
+  {PF_1,       TIM15, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM15, 1, 1)}, // TIM15_CH1N
+  {NC,         NP,    0}
+};
+#endif
+
+//*** UART ***
+
+#ifdef HAL_UART_MODULE_ENABLED
+WEAK const PinMap PinMap_UART_TX[] = {
+  {PA_0,       USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
+  {PA_2,       LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
+  {PA_2_ALT1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
+  {PA_4,       USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART6)},
+  {PA_5,       USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PA_9,       USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
+  {PA_9_R,     USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
+  {PA_14,      LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_LPUART2)},
+  {PA_14_ALT1, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
+  {PB_0,       USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART5)},
+  {PB_2,       USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PB_3,       USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART5)},
+  {PB_6,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_LPUART2)},
+  {PB_6_ALT1,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART1)},
+  {PB_8,       USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PB_8_ALT1,  USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
+  {PB_10,      USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PB_11,      LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_LPUART1)},
+  {PC_0,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_LPUART2)},
+  {PC_0_ALT1,  USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART6)},
+  {PC_1,       LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_LPUART1)},
+  {PC_4,       USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
+  {PC_4_ALT1,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART3)},
+  {PC_6,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_LPUART2)},
+  {PC_10,      USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART3)},
+  {PC_10_ALT1, USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART4)},
+  {PC_12,      USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART5)},
+  {PD_3,       USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART5)},
+  {PD_5,       USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART2)},
+  {PF_2,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_LPUART2)},
+  {NC,         NP,      0}
+};
+#endif
+
+#ifdef HAL_UART_MODULE_ENABLED
+WEAK const PinMap PinMap_UART_RX[] = {
+  {PA_1,       USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
+  {PA_3,       LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
+  {PA_3_ALT1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
+  {PA_5,       USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART6)},
+  {PA_10,      USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
+  {PA_10_R,    USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
+  {PA_13,      LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_LPUART2)},
+  {PA_15,      USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
+  {PB_0,       USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PB_1,       USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART5)},
+  {PB_4,       USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART5)},
+  {PB_7,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_LPUART2)},
+  {PB_7_ALT1,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART1)},
+  {PB_9,       USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PB_9_ALT1,  USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
+  {PB_10,      LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_LPUART1)},
+  {PB_11,      USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PC_0,       LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_LPUART1)},
+  {PC_1,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_LPUART2)},
+  {PC_1_ALT1,  USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART6)},
+  {PC_5,       USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
+  {PC_5_ALT1,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART3)},
+  {PC_7,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_LPUART2)},
+  {PC_11,      USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART3)},
+  {PC_11_ALT1, USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART4)},
+  {PD_2,       USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART5)},
+  {PD_6,       USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART2)},
+  {NC,         NP,      0}
+};
+#endif
+
+#ifdef HAL_UART_MODULE_ENABLED
+WEAK const PinMap PinMap_UART_RTS[] = {
+  {PA_1,       USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
+  {PA_7,       USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART6)},
+  {PA_12,      USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
+  {PA_15,      USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_USART3)},
+  {PA_15_ALT1, USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
+  {PB_1,       LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
+  {PB_1_ALT1,  LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_LPUART2)},
+  {PB_1_ALT2,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PB_3,       USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
+  {PB_5,       USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART5)},
+  {PB_12,      LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_LPUART1)},
+  {PB_14,      USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PB_14_ALT1, USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
+  {PC_9,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_LPUART2)},
+  {PD_2,       USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART3)},
+  {PD_4,       USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART2)},
+  {PD_4_ALT1,  USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART5)},
+  {PF_2,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_LPUART2)},
+  {NC,         NP,      0}
+};
+#endif
+
+#ifdef HAL_UART_MODULE_ENABLED
+WEAK const PinMap PinMap_UART_CTS[] = {
+  {PA_0,       USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
+  {PA_6,       LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
+  {PA_6_ALT1,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PA_6_ALT2,  USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART6)},
+  {PA_11,      USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
+  {PB_0,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_LPUART2)},
+  {PB_4,       USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
+  {PB_6,       USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART5)},
+  {PB_7,       USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
+  {PB_13,      LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_LPUART1)},
+  {PB_13_ALT1, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
+  {PB_15,      USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
+  {PC_8,       LPUART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_LPUART2)},
+  {PD_3,       USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART2)},
+  {PD_5,       USART5,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_USART5)},
+  {NC,         NP,      0}
+};
+#endif
+
+//*** SPI ***
+
+#ifdef HAL_SPI_MODULE_ENABLED
+WEAK const PinMap PinMap_SPI_MOSI[] = {
+  {PA_2,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PA_4,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {PA_7,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PA_10,     SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+  {PA_10_R,   SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+  {PA_12,     SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PB_5,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PB_5_ALT1, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_SPI3)},
+  {PB_7,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {PB_11,     SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+  {PB_15,     SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+  {PC_3,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {PC_12,     SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_SPI3)},
+  {PD_4,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {PD_6,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI1)},
+  {NC,        NP,   0}
+};
+#endif
+
+#ifdef HAL_SPI_MODULE_ENABLED
+WEAK const PinMap PinMap_SPI_MISO[] = {
+  {PA_3,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+  {PA_6,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PA_9,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_SPI2)},
+  {PA_9_R,    SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_SPI2)},
+  {PA_11,     SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PB_2,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {PB_4,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PB_4_ALT1, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_SPI3)},
+  {PB_6,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_SPI2)},
+  {PB_14,     SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+  {PC_2,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {PC_11,     SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_SPI3)},
+  {PD_3,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {PD_5,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI1)},
+  {NC,        NP,   0}
+};
+#endif
+
+#ifdef HAL_SPI_MODULE_ENABLED
+WEAK const PinMap PinMap_SPI_SCLK[] = {
+  {PA_0,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+  {PA_1,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PA_5,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PB_3,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PB_3_ALT1, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_SPI3)},
+  {PB_8,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {PB_10,     SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+  {PB_13,     SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+  {PC_10,     SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_SPI3)},
+  {PD_1,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {NC,        NP,   0}
+};
+#endif
+
+#ifdef HAL_SPI_MODULE_ENABLED
+WEAK const PinMap PinMap_SPI_SSEL[] = {
+  {PA_4,       SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PA_4_ALT1,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_SPI3)},
+  {PA_8,       SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {PA_15,      SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PA_15_ALT1, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_SPI3)},
+  {PB_0,       SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
+  {PB_9,       SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+  {PB_12,      SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
+  {PD_0,       SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
+  {NC,         NP,   0}
+};
+#endif
+
+//*** FDCAN ***
+
+#ifdef HAL_FDCAN_MODULE_ENABLED
+WEAK const PinMap PinMap_CAN_RD[] = {
+  {PA_11, FDCAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN1)},
+  {PB_0,  FDCAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN2)},
+  {PB_5,  FDCAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN2)},
+  {PB_8,  FDCAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN1)},
+  {PB_12, FDCAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN2)},
+  {PC_2,  FDCAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN2)},
+  {PC_4,  FDCAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN1)},
+  {PD_0,  FDCAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN1)},
+  {NC,    NP,     0}
+};
+#endif
+
+#ifdef HAL_FDCAN_MODULE_ENABLED
+WEAK const PinMap PinMap_CAN_TD[] = {
+  {PA_12, FDCAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN1)},
+  {PB_1,  FDCAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN2)},
+  {PB_6,  FDCAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN2)},
+  {PB_9,  FDCAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN1)},
+  {PB_13, FDCAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN2)},
+  {PC_3,  FDCAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN2)},
+  {PC_5,  FDCAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN1)},
+  {PD_1,  FDCAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_FDCAN1)},
+  {NC,    NP,     0}
+};
+#endif
+
+//*** No ETHERNET ***
+
+//*** No QUADSPI ***
+
+//*** USB ***
+
+#if defined(HAL_PCD_MODULE_ENABLED) || defined(HAL_HCD_MODULE_ENABLED)
+WEAK const PinMap PinMap_USB_DRD_FS[] = {
+  // {PA_4,  USB_DRD_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_USB)}, // USB_NOE
+  {PA_11, USB_DRD_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DM
+  {PA_12, USB_DRD_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DP
+  // {PA_13, USB_DRD_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_USB)}, // USB_NOE
+  // {PA_15, USB_DRD_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_USB)}, // USB_NOE
+  // {PC_9,  USB_DRD_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_USB)}, // USB_NOE
+  {NC,    NP,         0}
+};
+#endif
+
+//*** No SD ***
+
+#endif /* !CUSTOM_PERIPHERAL_PINS */

buildroot/share/PlatformIO/variants/STM32G0xx/MARLIN_G0B1RE/PinNamesVar.h

@@ -0,0 +1,90 @@
+/* Remap pin name */
+PA_9_R       = PA_9    | PREMAP,
+PA_10_R      = PA_10   | PREMAP,
+
+/* Alternate pin name */
+PA_1_ALT1    = PA_1    | ALT1,
+PA_2_ALT1    = PA_2    | ALT1,
+PA_3_ALT1    = PA_3    | ALT1,
+PA_4_ALT1    = PA_4    | ALT1,
+PA_6_ALT1    = PA_6    | ALT1,
+PA_6_ALT2    = PA_6    | ALT2,
+PA_7_ALT1    = PA_7    | ALT1,
+PA_7_ALT2    = PA_7    | ALT2,
+PA_7_ALT3    = PA_7    | ALT3,
+PA_9_ALT1    = PA_9    | ALT1,
+PA_9_R_ALT1  = PA_9_R  | ALT1,
+PA_10_ALT1   = PA_10   | ALT1,
+PA_10_R_ALT1 = PA_10_R | ALT1,
+PA_14_ALT1   = PA_14   | ALT1,
+PA_15_ALT1   = PA_15   | ALT1,
+PB_0_ALT1    = PB_0    | ALT1,
+PB_1_ALT1    = PB_1    | ALT1,
+PB_1_ALT2    = PB_1    | ALT2,
+PB_3_ALT1    = PB_3    | ALT1,
+PB_4_ALT1    = PB_4    | ALT1,
+PB_5_ALT1    = PB_5    | ALT1,
+PB_6_ALT1    = PB_6    | ALT1,
+PB_6_ALT2    = PB_6    | ALT2,
+PB_7_ALT1    = PB_7    | ALT1,
+PB_8_ALT1    = PB_8    | ALT1,
+PB_9_ALT1    = PB_9    | ALT1,
+PB_13_ALT1   = PB_13   | ALT1,
+PB_14_ALT1   = PB_14   | ALT1,
+PB_15_ALT1   = PB_15   | ALT1,
+PB_15_ALT2   = PB_15   | ALT2,
+PC_0_ALT1    = PC_0    | ALT1,
+PC_1_ALT1    = PC_1    | ALT1,
+PC_4_ALT1    = PC_4    | ALT1,
+PC_5_ALT1    = PC_5    | ALT1,
+PC_6_ALT1    = PC_6    | ALT1,
+PC_7_ALT1    = PC_7    | ALT1,
+PC_8_ALT1    = PC_8    | ALT1,
+PC_9_ALT1    = PC_9    | ALT1,
+PC_10_ALT1   = PC_10   | ALT1,
+PC_11_ALT1   = PC_11   | ALT1,
+PD_4_ALT1    = PD_4    | ALT1,
+
+/* SYS_WKUP */
+#ifdef PWR_WAKEUP_PIN1
+  SYS_WKUP1 = PA_0,
+#endif
+#ifdef PWR_WAKEUP_PIN2
+  SYS_WKUP2 = PC_13,
+#endif
+#ifdef PWR_WAKEUP_PIN3
+  SYS_WKUP3 = NC,
+#endif
+#ifdef PWR_WAKEUP_PIN4
+  SYS_WKUP4 = PA_2,
+#endif
+#ifdef PWR_WAKEUP_PIN5
+  SYS_WKUP5 = PC_5,
+#endif
+#ifdef PWR_WAKEUP_PIN6
+  SYS_WKUP6 = PB_5,
+#endif
+#ifdef PWR_WAKEUP_PIN7
+  SYS_WKUP7 = NC,
+#endif
+#ifdef PWR_WAKEUP_PIN8
+  SYS_WKUP8 = NC,
+#endif
+
+/* USB */
+#ifdef USBCON
+  USB_DM  = PA_11,
+  USB_DP  = PA_12,
+  #ifdef USB_NOE_PA_4
+    USB_NOE = PA_4,
+  #endif
+  #ifdef USB_NOE_PA_13
+    USB_NOE = PA_13,
+  #endif
+  #ifdef USB_NOE_PA_15
+    USB_NOE = PA_15,
+  #endif
+  #ifdef USB_NOE_PC_9
+    USB_NOE = PC_9,
+  #endif
+#endif

buildroot/share/PlatformIO/variants/STM32G0xx/MARLIN_G0B1RE/ldscript.ld

@@ -0,0 +1,177 @@
+/**
+ ******************************************************************************
+ * @file      LinkerScript.ld
+ * @author    Auto-generated by STM32CubeIDE
+ * @brief     Linker script for STM32G0B1RETx Device from STM32G0 series
+ *                      512Kbytes FLASH
+ *                      144Kbytes RAM
+ *
+ *            Set heap size, stack size and stack location according
+ *            to application requirements.
+ *
+ *            Set memory bank area and size if external memory is used
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ *                        opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200;	/* required amount of heap  */
+_Min_Stack_Size = 0x400;	/* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = LD_MAX_DATA_SIZE
+  FLASH    (rx)    : ORIGIN = 0x8000000 + LD_FLASH_OFFSET, LENGTH = LD_MAX_SIZE - LD_FLASH_OFFSET
+}
+
+/* Sections */
+SECTIONS
+{
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : {
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+    *(.RamFunc)        /* .RamFunc sections */
+    *(.RamFunc*)       /* .RamFunc* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}

buildroot/share/PlatformIO/variants/STM32G0xx/MARLIN_G0B1RE/variant_MARLIN_STM32G0B1RE.cpp

@@ -0,0 +1,177 @@
+/*
+ *******************************************************************************
+ * Copyright (c) 2020-2021, STMicroelectronics
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ *                        opensource.org/licenses/BSD-3-Clause
+ *
+ *******************************************************************************
+ */
+
+#if defined(STM32G0B1xx)
+#include "pins_arduino.h"
+
+// Digital PinName array
+const PinName digitalPin[] = {
+  PA_0,   // D0/A0
+  PA_1,   // D1/A1
+  PA_2,   // D2/A2
+  PA_3,   // D3/A3
+  PA_4,   // D4/A4
+  PA_5,   // D5/A5
+  PA_6,   // D6/A6
+  PA_7,   // D7/A7
+  PA_8,   // D8
+  PA_9,   // D9
+  PA_10,  // D10
+  PA_11,  // D11
+  PA_12,  // D12
+  PA_13,  // D13
+  PA_14,  // D14
+  PA_15,  // D15
+  PB_0,   // D16/A8
+  PB_1,   // D17/A9
+  PB_2,   // D18/A10
+  PB_3,   // D19
+  PB_4,   // D20
+  PB_5,   // D21
+  PB_6,   // D22
+  PB_7,   // D23
+  PB_8,   // D24
+  PB_9,   // D25
+  PB_10,  // D26/A11
+  PB_11,  // D27/A12
+  PB_12,  // D28/A13
+  PB_13,  // D29
+  PB_14,  // D30
+  PB_15,  // D31
+  PC_0,   // D32
+  PC_1,   // D33
+  PC_2,   // D34
+  PC_3,   // D35
+  PC_4,   // D36/A14
+  PC_5,   // D37/A15
+  PC_6,   // D38
+  PC_7,   // D39
+  PC_8,   // D40
+  PC_9,   // D41
+  PC_10,  // D42
+  PC_11,  // D43
+  PC_12,  // D44
+  PC_13,  // D45
+  PC_14,  // D46
+  PC_15,  // D47
+  PD_0,   // D48
+  PD_1,   // D49
+  PD_2,   // D50
+  PD_3,   // D51
+  PD_4,   // D52
+  PD_5,   // D53
+  PD_6,   // D54
+  PD_8,   // D55
+  PD_9,   // D56
+  PF_0,   // D57
+  PF_1,   // D58
+  PF_2,   // D59
+  PA_9_R, // D60
+  PA_10_R // D61
+};
+
+// Analog (Ax) pin number array
+const uint32_t analogInputPin[] = {
+  0,  // A0,  PA0
+  1,  // A1,  PA1
+  2,  // A2,  PA2
+  3,  // A3,  PA3
+  4,  // A4,  PA4
+  5,  // A5,  PA5
+  6,  // A6,  PA6
+  7,  // A7,  PA7
+  16, // A8,  PB0
+  17, // A9,  PB1
+  18, // A10, PB2
+  26, // A11, PB10
+  27, // A12, PB11
+  28, // A13, PB12
+  36, // A14, PC4
+  37  // A15, PC5
+};
+
+// ----------------------------------------------------------------------------
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  * @brief  System Clock Configuration
+  *         The system Clock is configured as follows :
+  *            System Clock source            = PLL (HSE)
+  *            SYSCLK(Hz)                     = 64000000
+  *            HCLK(Hz)                       = 64000000
+  *            AHB Prescaler                  = 1
+  *            APB1 Prescaler                 = 1
+  *            PLL_M                          = 1
+  *            PLL_N                          = 16
+  *            PLL_R                          = 2
+  *            PLL_P                          = 2
+  *            PLL_Q                          = 2
+  *            USB(Hz)                        = 48000000 (HSI48M)
+  * @param  None
+  * @retval None
+  */
+WEAK void SystemClock_Config(void)
+{
+  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
+  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
+
+  /** Configure the main internal regulator output voltage
+  */
+  HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
+  /** Initializes the RCC Oscillators according to the specified parameters
+  * in the RCC_OscInitTypeDef structure.
+  */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE|RCC_OSCILLATORTYPE_HSI48;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1;
+  RCC_OscInitStruct.PLL.PLLN = 16;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
+  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
+  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
+  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /** Initializes the CPU, AHB and APB buses clocks
+  */
+  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
+                              |RCC_CLOCKTYPE_PCLK1;
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
+
+  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /** Initializes the peripherals clocks
+  */
+  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
+  PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
+  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
+  {
+    Error_Handler();
+  }
+}
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* STM32G0B1xx */

buildroot/share/PlatformIO/variants/STM32G0xx/MARLIN_G0B1RE/variant_MARLIN_STM32G0B1RE.h

@@ -0,0 +1,199 @@
+/*
+ *******************************************************************************
+ * Copyright (c) 2020-2021, STMicroelectronics
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ *                        opensource.org/licenses/BSD-3-Clause
+ *
+ *******************************************************************************
+ */
+#pragma once
+
+/*----------------------------------------------------------------------------
+ *        STM32 pins number
+ *----------------------------------------------------------------------------*/
+#define PA0                     PIN_A0
+#define PA1                     PIN_A1
+#define PA2                     PIN_A2
+#define PA3                     PIN_A3
+#define PA4                     PIN_A4
+#define PA5                     PIN_A5
+#define PA6                     PIN_A6
+#define PA7                     PIN_A7
+#define PA8                     8
+#define PA9                     9
+#define PA10                    10
+#define PA11                    11
+#define PA12                    12
+#define PA13                    13
+#define PA14                    14
+#define PA15                    15
+#define PB0                     PIN_A8
+#define PB1                     PIN_A9
+#define PB2                     PIN_A10
+#define PB3                     19
+#define PB4                     20
+#define PB5                     21
+#define PB6                     22
+#define PB7                     23
+#define PB8                     24
+#define PB9                     25
+#define PB10                    PIN_A11
+#define PB11                    PIN_A12
+#define PB12                    PIN_A13
+#define PB13                    29
+#define PB14                    30
+#define PB15                    31
+#define PC0                     32
+#define PC1                     33
+#define PC2                     34
+#define PC3                     35
+#define PC4                     PIN_A14
+#define PC5                     PIN_A15
+#define PC6                     38
+#define PC7                     39
+#define PC8                     40
+#define PC9                     41
+#define PC10                    42
+#define PC11                    43
+#define PC12                    44
+#define PC13                    45
+#define PC14                    46
+#define PC15                    47
+#define PD0                     48
+#define PD1                     49
+#define PD2                     50
+#define PD3                     51
+#define PD4                     52
+#define PD5                     53
+#define PD6                     54
+#define PD8                     55
+#define PD9                     56
+#define PF0                     57
+#define PF1                     58
+#define PF2                     59
+#define PA9_R                   60
+#define PA10_R                  61
+
+// Alternate pins number
+#define PA1_ALT1                (PA1    | ALT1)
+#define PA2_ALT1                (PA2    | ALT1)
+#define PA3_ALT1                (PA3    | ALT1)
+#define PA4_ALT1                (PA4    | ALT1)
+#define PA6_ALT1                (PA6    | ALT1)
+#define PA6_ALT2                (PA6    | ALT2)
+#define PA7_ALT1                (PA7    | ALT1)
+#define PA7_ALT2                (PA7    | ALT2)
+#define PA7_ALT3                (PA7    | ALT3)
+#define PA9_ALT1                (PA9    | ALT1)
+#define PA9_R_ALT1              (PA9_R  | ALT1)
+#define PA10_ALT1               (PA10   | ALT1)
+#define PA10_R_ALT1             (PA10_R | ALT1)
+#define PA14_ALT1               (PA14   | ALT1)
+#define PA15_ALT1               (PA15   | ALT1)
+#define PB0_ALT1                (PB0    | ALT1)
+#define PB1_ALT1                (PB1    | ALT1)
+#define PB1_ALT2                (PB1    | ALT2)
+#define PB3_ALT1                (PB3    | ALT1)
+#define PB4_ALT1                (PB4    | ALT1)
+#define PB5_ALT1                (PB5    | ALT1)
+#define PB6_ALT1                (PB6    | ALT1)
+#define PB6_ALT2                (PB6    | ALT2)
+#define PB7_ALT1                (PB7    | ALT1)
+#define PB8_ALT1                (PB8    | ALT1)
+#define PB9_ALT1                (PB9    | ALT1)
+#define PB13_ALT1               (PB13   | ALT1)
+#define PB14_ALT1               (PB14   | ALT1)
+#define PB15_ALT1               (PB15   | ALT1)
+#define PB15_ALT2               (PB15   | ALT2)
+#define PC0_ALT1                (PC0    | ALT1)
+#define PC1_ALT1                (PC1    | ALT1)
+#define PC4_ALT1                (PC4    | ALT1)
+#define PC5_ALT1                (PC5    | ALT1)
+#define PC6_ALT1                (PC6    | ALT1)
+#define PC7_ALT1                (PC7    | ALT1)
+#define PC8_ALT1                (PC8    | ALT1)
+#define PC9_ALT1                (PC9    | ALT1)
+#define PC10_ALT1               (PC10   | ALT1)
+#define PC11_ALT1               (PC11   | ALT1)
+#define PD4_ALT1                (PD4    | ALT1)
+
+#define NUM_DIGITAL_PINS        62
+#define NUM_REMAP_PINS          2
+#define NUM_ANALOG_INPUTS       16
+
+// SPI definitions
+#ifndef PIN_SPI_SS
+  #define PIN_SPI_SS            PA4
+#endif
+#ifndef PIN_SPI_MOSI
+  #define PIN_SPI_MOSI          PA7
+#endif
+#ifndef PIN_SPI_MISO
+  #define PIN_SPI_MISO          PA6
+#endif
+#ifndef PIN_SPI_SCK
+  #define PIN_SPI_SCK           PA5
+#endif
+
+// I2C definitions
+#ifndef PIN_WIRE_SDA
+  #define PIN_WIRE_SDA          PB6
+#endif
+#ifndef PIN_WIRE_SCL
+  #define PIN_WIRE_SCL          PB7
+#endif
+
+// Timer Definitions
+// Use TIM6/TIM7 when possible as servo and tone don't need GPIO output pin
+#ifndef TIMER_TONE
+  #define TIMER_TONE            TIM6
+#endif
+#ifndef TIMER_SERVO
+  #define TIMER_SERVO           TIM7
+#endif
+
+// UART Definitions
+#ifndef SERIAL_UART_INSTANCE
+  #define SERIAL_UART_INSTANCE  2
+#endif
+
+// Default pin used for generic 'Serial' instance
+// Mandatory for Firmata
+#ifndef PIN_SERIAL_RX
+  #define PIN_SERIAL_RX         PA3
+#endif
+#ifndef PIN_SERIAL_TX
+  #define PIN_SERIAL_TX         PA2
+#endif
+
+/*----------------------------------------------------------------------------
+ *        Arduino objects - C++ only
+ *----------------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+  // These serial port names are intended to allow libraries and architecture-neutral
+  // sketches to automatically default to the correct port name for a particular type
+  // of use.  For example, a GPS module would normally connect to SERIAL_PORT_HARDWARE_OPEN,
+  // the first hardware serial port whose RX/TX pins are not dedicated to another use.
+  //
+  // SERIAL_PORT_MONITOR        Port which normally prints to the Arduino Serial Monitor
+  //
+  // SERIAL_PORT_USBVIRTUAL     Port which is USB virtual serial
+  //
+  // SERIAL_PORT_LINUXBRIDGE    Port which connects to a Linux system via Bridge library
+  //
+  // SERIAL_PORT_HARDWARE       Hardware serial port, physical RX & TX pins.
+  //
+  // SERIAL_PORT_HARDWARE_OPEN  Hardware serial ports which are open for use.  Their RX & TX
+  //                            pins are NOT connected to anything by default.
+  #ifndef SERIAL_PORT_MONITOR
+    #define SERIAL_PORT_MONITOR   Serial
+  #endif
+  #ifndef SERIAL_PORT_HARDWARE
+    #define SERIAL_PORT_HARDWARE  Serial2
+  #endif
+#endif

ini/stm32g0.ini

@@ -0,0 +1,39 @@
+#
+# Marlin Firmware
+# PlatformIO Configuration File
+#
+
+#################################
+#
+# STM32G0 Architecture
+#
+# Naming Example: STM32G0B1RET6
+#
+#   G : Foundation
+#   0 : Cortex M0+ core (0:M0, 1-2:M3, 3-4:M4, 7:M7)
+#  B1 : Line/Features
+#   R : 64 pins  (R:64 or 66, F:20)
+#   E : 512KB Flash-memory  (C:256KB, D:384KB, E:512KB, G:1024KB)
+#   T : LQFP package
+#   6 : -40...85°C   (7: ...105°C)
+#
+#################################
+
+#
+# BigTree SKR mini E3 V3.0 (STM32G0B1RET6 ARM Cortex-M0+)
+#
+[env:STM32G0B1RE_btt]
+platform          = ststm32@~14.1.0
+platform_packages = framework-arduinoststm32@https://github.com/stm32duino/Arduino_Core_STM32/archive/main.zip
+extends            = stm32_variant
+board              = marlin_STM32G0B1RE
+board_build.offset          = 0x2000
+board_upload.offset_address = 0x08002000
+build_flags        = ${stm32_variant.build_flags}
+                   -DADC_RESOLUTION=12
+                   -DPIN_SERIAL4_RX=PC_11 -DPIN_SERIAL4_TX=PC_10
+                   -DSERIAL_RX_BUFFER_SIZE=1024 -DSERIAL_TX_BUFFER_SIZE=1024
+                   -DTIMER_SERVO=TIM3 -DTIMER_TONE=TIM4
+                   -DSTEP_TIMER_IRQ_PRIO=0
+upload_protocol   = stlink
+debug_tool        = stlink

platformio.ini

@@ -30,6 +30,7 @@ extra_configs =
     ini/stm32f4.ini
     ini/stm32f7.ini
     ini/stm32h7.ini
+    ini/stm32g0.ini
     ini/teensy.ini
 
 #