support for ARDUINO_WEACT_WB55CGU6

README.md

@@ -819,6 +819,7 @@ User can add a STM32 based board following this [wiki](https://github.com/stm32d
 | :----: | :-------: | ---- | :-----: | :---- |
 | :green_heart: | STM32WB15CCU | Generic Board | *2.5.0* |  |
 | :green_heart: | STM32WB55CC<br>STM32WB55CE<br>STM32WB55CG | Generic Board | *2.0.0* |  |
+| :yellow_heart: | STM32WB55CGU | [WeAct STM32WB55CGU6](https://github.com/WeActStudio/WeActStudio.STM32WB55CoreBoard) | **3.0.0** |  |
 | :green_heart: | STM32WB5MMG | Generic Board | *2.1.0* |  |
 | :green_heart: | STM32WB55RC<br>STM32WB55RE<br>STM32WB55RG | Generic Board | *2.0.0* |  |
 | :green_heart: | STM32WB55VC<br>STM32WB55VE<br>STM32WB55VG | Generic Board | *2.10.0* |  |

boards.txt

@@ -13539,6 +13539,16 @@ GenWB.openocd.target=stm32wbx
 GenWB.vid.0=0x0483
 GenWB.pid.0=0x5740
 
+# WeAct STM32WB55CGU6
+GenWB.menu.pnum.WEACT_WB55CGU6=WeAct STM32WB55CGU6
+GenWB.menu.pnum.WEACT_WB55CGU6.upload.maximum_size=524288
+GenWB.menu.pnum.WEACT_WB55CGU6.upload.maximum_data_size=196608
+GenWB.menu.pnum.WEACT_WB55CGU6.build.board=WEACT_WB55CGU6
+GenWB.menu.pnum.WEACT_WB55CGU6.build.product_line=STM32WB55xx
+GenWB.menu.pnum.WEACT_WB55CGU6.build.variant=STM32WBxx/WB35C(C-E)UxA_WB55C(C-E-G)U
+GenWB.menu.pnum.WEACT_WB55CGU6.build.variant_h=variant_WEACT_WB55CGU6.h
+GenWB.menu.pnum.WEACT_WB55CGU6.debug.svd_file={runtime.tools.STM32_SVD.path}/svd/STM32WBxx/STM32WB55_CM4.svd
+
 # Generic WB15CCUx
 GenWB.menu.pnum.GENERIC_WB15CCUX=Generic WB15CCUx
 GenWB.menu.pnum.GENERIC_WB15CCUX.upload.maximum_size=131072

variants/STM32WBxx/WB35C(C-E)UxA_WB55C(C-E-G)U/CMakeLists.txt

@@ -24,6 +24,7 @@ add_library(variant_bin STATIC EXCLUDE_FROM_ALL
   variant_generic.cpp
   variant_MKR_SHARKY.cpp
   variant_P_NUCLEO_WB55_USB_DONGLE.cpp
+  variant_WEACT_WB55CGU6.cpp
 )
 target_link_libraries(variant_bin PUBLIC variant_usage)
 

variants/STM32WBxx/WB35C(C-E)UxA_WB55C(C-E-G)U/variant_WEACT_WB55CGU6.cpp

@@ -0,0 +1,150 @@
+/*
+ *******************************************************************************
+ * Copyright (c) 2026, 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(ARDUINO_WEACT_WB55CGU6)
+#include "pins_arduino.h"
+#include "lock_resource.h"
+
+// Digital PinName array
+const PinName digitalPin[] = {
+  PB_2,   // D0
+  PA_9,   // D1
+  PA_8,   // D2
+  PA_7,   // D3
+  PA_6,   // D4
+  PA_5,   // D5
+  PA_4,   // D6
+  PA_3,   // D7
+  PA_2,   // D8
+  PA_1,   // D9
+  PA_0,   // D10
+  PB_8,   // D11
+  PB_9,   // D12
+  PH_3,   // D13 - BOOT0 / SW2 button
+  PB_0,   // D14
+  PB_1,   // D15
+  PE_4,   // D16 - onboard blue LED
+  PA_10,  // D17
+  PA_15,  // D18
+  PB_3,   // D19
+  PB_4,   // D20
+  PB_5,   // D21
+  PB_6,   // D22
+  PB_7    // D23
+};
+
+// Analog (Ax) pin number array
+const pin_size_t analogInputPin[] = {
+  10, // A0,  PA0
+  9,  // A1,  PA1
+  8,  // A2,  PA2
+  7,  // A3,  PA3
+  6,  // A4,  PA4
+  5,  // A5,  PA5
+  4,  // A6,  PA6
+  3,  // A7,  PA7
+  2,  // A8,  PA8
+  1   // A9,  PA9
+};
+
+// ----------------------------------------------------------------------------
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  * @brief  System Clock Configuration
+  * @param  None
+  * @retval None
+  *
+  * Board is fitted with a 32MHz HSE crystal (X2) and a 32.768kHz LSE
+  * crystal (X1). SYSCLK is driven directly by HSE (no PLL needed) and
+  * USB/RNG are clocked from the dedicated HSI48 oscillator, otherwise
+  * the USB peripheral is left unclocked and never enumerates.
+  */
+WEAK void SystemClock_Config(void)
+{
+  RCC_OscInitTypeDef RCC_OscInitStruct = {};
+  RCC_ClkInitTypeDef RCC_ClkInitStruct = {};
+  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {};
+
+  /* This prevents concurrent access to RCC registers by CPU2 (M0+) */
+  hsem_lock(CFG_HW_RCC_SEMID, HSEM_LOCK_DEFAULT_RETRY);
+
+  /* Macro to configure the PLL multiplication factor */
+  __HAL_RCC_PLL_PLLM_CONFIG(RCC_PLLM_DIV2);
+
+  /* Macro to configure the PLL clock source */
+  __HAL_RCC_PLL_PLLSOURCE_CONFIG(RCC_PLLSOURCE_HSE);
+
+  __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_MEDIUMHIGH);
+  /* Configure the main internal regulator output voltage */
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+
+  /* This prevents the CPU2 (M0+) to disable the HSI48 oscillator */
+  hsem_lock(CFG_HW_CLK48_CONFIG_SEMID, HSEM_LOCK_DEFAULT_RETRY);
+
+  /* Initializes the CPU, AHB and APB busses clocks */
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48 | RCC_OSCILLATORTYPE_HSI
+                                     | RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_LSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.LSEState = RCC_LSE_ON;
+  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+  RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
+  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
+  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
+    Error_Handler();
+  }
+
+  /* Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers */
+  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK4 | RCC_CLOCKTYPE_HCLK2
+                                | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
+                                | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSE;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+  RCC_ClkInitStruct.AHBCLK2Divider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.AHBCLK4Divider = RCC_SYSCLK_DIV1;
+  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) {
+    Error_Handler();
+  }
+
+  /* Initializes the peripherals clocks */
+  /* RNG needs to be configured like in M0 core, i.e. with HSI48 */
+  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SMPS | RCC_PERIPHCLK_RFWAKEUP
+                                             | RCC_PERIPHCLK_RNG | RCC_PERIPHCLK_USB;
+  PeriphClkInitStruct.RFWakeUpClockSelection = RCC_RFWKPCLKSOURCE_LSE;
+  PeriphClkInitStruct.RngClockSelection = RCC_RNGCLKSOURCE_HSI48;
+  PeriphClkInitStruct.SmpsClockSelection = RCC_SMPSCLKSOURCE_HSE;
+  PeriphClkInitStruct.SmpsDivSelection = RCC_SMPSCLKDIV_RANGE0;
+  PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
+
+  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
+    Error_Handler();
+  }
+
+  LL_PWR_SMPS_SetStartupCurrent(LL_PWR_SMPS_STARTUP_CURRENT_80MA);
+  LL_PWR_SMPS_SetOutputVoltageLevel(LL_PWR_SMPS_OUTPUT_VOLTAGE_1V40);
+  LL_PWR_SMPS_Enable();
+
+  /* Select HSI as system clock source after Wake Up from Stop mode */
+  LL_RCC_SetClkAfterWakeFromStop(LL_RCC_STOP_WAKEUPCLOCK_HSI);
+
+  hsem_unlock(CFG_HW_RCC_SEMID);
+}
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* ARDUINO_WEACT_WB55CGU6 */

variants/STM32WBxx/WB35C(C-E)UxA_WB55C(C-E-G)U/variant_WEACT_WB55CGU6.h

@@ -0,0 +1,150 @@
+/*
+ *******************************************************************************
+ * Copyright (c) 2026, 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 PB2                     0
+#define PA9                     PIN_A9
+#define PA8                     PIN_A8
+#define PA7                     PIN_A7
+#define PA6                     PIN_A6
+#define PA5                     PIN_A5
+#define PA4                     PIN_A4
+#define PA3                     PIN_A3
+#define PA2                     PIN_A2
+#define PA1                     PIN_A1
+#define PA0                     PIN_A0
+#define PB8                     11
+#define PB9                     12
+#define PH3                     13 // BOOT0 / SW2 button
+#define PB0                     14
+#define PB1                     15
+#define PE4                     16 // Onboard blue LED
+#define PA10                    17
+#define PA15                    18
+#define PB3                     19
+#define PB4                     20
+#define PB5                     21
+#define PB6                     22
+#define PB7                     23
+
+// Alternate pins number
+#define PA7_ALT1                (PA7 | ALT1)
+#define PB8_ALT1                (PB8 | ALT1)
+#define PB9_ALT1                (PB9 | ALT1)
+
+#define NUM_DIGITAL_PINS        24
+#define NUM_ANALOG_INPUTS       10
+
+// On-board LED pin number
+#ifndef LED_BUILTIN
+  #define LED_BUILTIN           PE4
+#endif
+
+// On-board user button (shared with BOOT0 hardware bootloader select)
+#ifndef USER_BTN
+  #define USER_BTN              PH3
+#endif
+
+// SPI definitions
+#ifndef PIN_SPI_SS
+  #define PIN_SPI_SS            PA4
+#endif
+#ifndef PIN_SPI_SS1
+  #define PIN_SPI_SS1           PA15
+#endif
+#ifndef PIN_SPI_SS2
+  #define PIN_SPI_SS2           PB2
+#endif
+#ifndef PIN_SPI_SS3
+  #define PIN_SPI_SS3           PNUM_NOT_DEFINED
+#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          PB9
+#endif
+#ifndef PIN_WIRE_SCL
+  #define PIN_WIRE_SCL          PB8
+#endif
+
+// Timer Definitions
+// Use TIM6/TIM7 when possible as servo and tone don't need GPIO output pin
+#ifndef TIMER_TONE
+  #define TIMER_TONE            TIM16
+#endif
+#ifndef TIMER_SERVO
+  #define TIMER_SERVO           TIM17
+#endif
+
+// UART Definitions
+#ifndef SERIAL_UART_INSTANCE
+  #define SERIAL_UART_INSTANCE  101
+#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
+
+// Extra HAL modules
+#if !defined(HAL_QSPI_MODULE_DISABLED)
+  #define HAL_QSPI_MODULE_ENABLED
+#endif
+
+#ifndef HSE_VALUE
+  #define HSE_VALUE 32000000U
+#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  Serial
+  #endif
+#endif