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support for ARDUINO_WEACT_WB55CGU6
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‎README.md‎

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

‎boards.txt‎

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@@ -13674,6 +13674,16 @@ GenWB.menu.pnum.GENERIC_WB5MMGHX.build.product_line=STM32WB5Mxx
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GenWB.menu.pnum.GENERIC_WB5MMGHX.build.variant=STM32WBxx/WB5MMGH
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GenWB.menu.pnum.GENERIC_WB5MMGHX.debug.svd_file={runtime.tools.STM32_SVD.path}/svd/STM32WBxx/STM32WB55_CM4.svd
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# WeAct STM32WB55CGU6
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GenWB.menu.pnum.WEACT_WB55CGU6=WeAct STM32WB55CGU6
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GenWB.menu.pnum.WEACT_WB55CGU6.upload.maximum_size=524288
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GenWB.menu.pnum.WEACT_WB55CGU6.upload.maximum_data_size=196608
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GenWB.menu.pnum.WEACT_WB55CGU6.build.board=WEACT_WB55CGU6
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GenWB.menu.pnum.WEACT_WB55CGU6.build.product_line=STM32WB55xx
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GenWB.menu.pnum.WEACT_WB55CGU6.build.variant=STM32WBxx/WB35C(C-E)UxA_WB55C(C-E-G)U
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GenWB.menu.pnum.WEACT_WB55CGU6.build.variant_h=variant_WEACT_WB55CGU6.h
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GenWB.menu.pnum.WEACT_WB55CGU6.debug.svd_file={runtime.tools.STM32_SVD.path}/svd/STM32WBxx/STM32WB55_CM4.svd
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# Upload menu
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GenWB.menu.upload_method.swdMethod=STM32CubeProgrammer (SWD)

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

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@@ -24,6 +24,7 @@ add_library(variant_bin STATIC EXCLUDE_FROM_ALL
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variant_generic.cpp
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variant_MKR_SHARKY.cpp
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variant_P_NUCLEO_WB55_USB_DONGLE.cpp
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variant_WEACT_WB55CGU6.cpp
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)
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target_link_libraries(variant_bin PUBLIC variant_usage)
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‎variants/STM32WBxx/WB35C(C-E)UxA_WB55C(C-E-G)U/variant_WEACT_WB55CGU6.cpp‎

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

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

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/*
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*******************************************************************************
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* Copyright (c) 2026, STMicroelectronics
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* All rights reserved.
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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*******************************************************************************
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*/
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#pragma once
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/*----------------------------------------------------------------------------
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* STM32 pins number
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*----------------------------------------------------------------------------*/
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#define PB2 0
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#define PA9 PIN_A9
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#define PA8 PIN_A8
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#define PA7 PIN_A7
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#define PA6 PIN_A6
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#define PA5 PIN_A5
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#define PA4 PIN_A4
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#define PA3 PIN_A3
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#define PA2 PIN_A2
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#define PA1 PIN_A1
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#define PA0 PIN_A0
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#define PB8 11
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#define PB9 12
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#define PH3 13 // BOOT0 / SW2 button
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#define PB0 14
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#define PB1 15
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#define PE4 16 // Onboard blue LED
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#define PA10 17
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#define PA15 18
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#define PB3 19
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#define PB4 20
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#define PB5 21
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#define PB6 22
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#define PB7 23
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// Alternate pins number
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#define PA7_ALT1 (PA7 | ALT1)
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#define PB8_ALT1 (PB8 | ALT1)
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#define PB9_ALT1 (PB9 | ALT1)
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#define NUM_DIGITAL_PINS 24
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#define NUM_ANALOG_INPUTS 10
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// On-board LED pin number
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#ifndef LED_BUILTIN
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#define LED_BUILTIN PE4
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#endif
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// On-board user button (shared with BOOT0 hardware bootloader select)
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#ifndef USER_BTN
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#define USER_BTN PH3
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#endif
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// SPI definitions
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#ifndef PIN_SPI_SS
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#define PIN_SPI_SS PA4
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#endif
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#ifndef PIN_SPI_SS1
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#define PIN_SPI_SS1 PA15
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#endif
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#ifndef PIN_SPI_SS2
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#define PIN_SPI_SS2 PB2
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#endif
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#ifndef PIN_SPI_SS3
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#define PIN_SPI_SS3 PNUM_NOT_DEFINED
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#endif
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#ifndef PIN_SPI_MOSI
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#define PIN_SPI_MOSI PA7
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#endif
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#ifndef PIN_SPI_MISO
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#define PIN_SPI_MISO PA6
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#endif
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#ifndef PIN_SPI_SCK
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#define PIN_SPI_SCK PA5
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#endif
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// I2C definitions
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#ifndef PIN_WIRE_SDA
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#define PIN_WIRE_SDA PB9
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#endif
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#ifndef PIN_WIRE_SCL
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#define PIN_WIRE_SCL PB8
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#endif
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// Timer Definitions
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// Use TIM6/TIM7 when possible as servo and tone don't need GPIO output pin
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#ifndef TIMER_TONE
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#define TIMER_TONE TIM16
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#endif
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#ifndef TIMER_SERVO
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#define TIMER_SERVO TIM17
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#endif
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// UART Definitions
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#ifndef SERIAL_UART_INSTANCE
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#define SERIAL_UART_INSTANCE 101
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#endif
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// Default pin used for generic 'Serial' instance
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// Mandatory for Firmata
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#ifndef PIN_SERIAL_RX
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#define PIN_SERIAL_RX PA3
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#endif
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#ifndef PIN_SERIAL_TX
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#define PIN_SERIAL_TX PA2
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#endif
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// Extra HAL modules
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#if !defined(HAL_QSPI_MODULE_DISABLED)
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#define HAL_QSPI_MODULE_ENABLED
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#endif
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#ifndef HSE_VALUE
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#define HSE_VALUE 32000000U
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#endif
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/*----------------------------------------------------------------------------
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* Arduino objects - C++ only
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*----------------------------------------------------------------------------*/
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#ifdef __cplusplus
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// These serial port names are intended to allow libraries and architecture-neutral
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// sketches to automatically default to the correct port name for a particular type
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// of use. For example, a GPS module would normally connect to SERIAL_PORT_HARDWARE_OPEN,
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// the first hardware serial port whose RX/TX pins are not dedicated to another use.
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//
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// SERIAL_PORT_MONITOR Port which normally prints to the Arduino Serial Monitor
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//
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// SERIAL_PORT_USBVIRTUAL Port which is USB virtual serial
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//
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// SERIAL_PORT_LINUXBRIDGE Port which connects to a Linux system via Bridge library
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//
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// SERIAL_PORT_HARDWARE Hardware serial port, physical RX & TX pins.
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//
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// SERIAL_PORT_HARDWARE_OPEN Hardware serial ports which are open for use. Their RX & TX
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// pins are NOT connected to anything by default.
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#ifndef SERIAL_PORT_MONITOR
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#define SERIAL_PORT_MONITOR Serial
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#endif
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#ifndef SERIAL_PORT_HARDWARE
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#define SERIAL_PORT_HARDWARE Serial
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#endif
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#endif

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