Zoltan Hudak
BLACKPILL custom target.
BLACKPILL custom target
Board pinout
When equipped with STM32F401CCU6:
When equipped with STM32F411CEU6:
Advantages of the BLACKPILL custom target over the NUCLEO_F401RE/ NUCLEO_F411RE
- The onboard external 25 MHz crystal is used as system clock source rather than the less precise internal 16 MHz RC oscillator.
- The onboard LED works as LED1 in programs.
- The onboard KEY on STM32F411CEU6 boards works as USER_BUTTON pin in programs.
- You can use the USB peripheral in your programs and connect the board to the PC over the onboard USB connector. An example of using the USB peripheral as USBSerial (12 Mbit/s) is available here.
Building programs for the BLACKPILL custom target in Mbed Studio
- Connect an STM32 ST-Link programmer to your BLACKPILL board and PC (see below for more details).
- Create a new program in the Mbed Studio IDE.
- Right-click on the program's root folder and in the popup window select
Add library...
- Copy&paste the text https://os.mbed.com/users/hudakz/code/BLACKPILL_Custom_Target into the
Git or os.mbed.com URLedit box and click on theNextbutton.
- Open the drop-list and select
defaultasBranch or tagand click on theFinishbutton.
- Open the
BLACKPILL_Custom_Targetfolder and according to you board drag&drop theTARGET_BLACKPILL_F401CCor theTARGET_BLACKPILL_F411CEfolder and thecustom_targets.jsonfile one by one to the root folder of your program.
- Delete the
BLACKPILL_Custom_Targetfolder from your project. (Right-click and select delete).
- Open the
Targetdrop-list and click on the button with a "chip" icon on it (Manage custom targets) .
- Open the
USB devicedrop-list and select your STM32 ST-Link programmer.
- Open the
Build targetdrop-list and according to your board selectBLACKPILL_F401CCorBLACKPILL_F411CE.
- Click on the
Save Allbutton.
- Build your program (click on hammer button).
For more info visit
Import programBlackpill_Hello
Using low cost Blackpill (STM32F411CEU6) boards with mbed.
Last commit 23 Sep 2020 by 
Zoltan Hudak
Diff: TARGET_BLACKPILL_F401CC/TOOLCHAIN_ARM/startup_stm32f401xc.S
- Revision:
- 7:3a74f7149fa4
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_BLACKPILL_F401CC/TOOLCHAIN_ARM/startup_stm32f401xc.S Sat Mar 19 10:08:40 2022 +0000 @@ -0,0 +1,335 @@ +;******************************************************************************* +;* File Name : startup_stm32f411xe.s +;* Author : MCD Application Team +;* Description : STM32F411xExx devices vector table for MDK-ARM toolchain. +;* This module performs: +;* - Set the initial SP +;* - Set the initial PC == Reset_Handler +;* - Set the vector table entries with the exceptions ISR address +;* - Branches to __main in the C library (which eventually +;* calls main()). +;* After Reset the CortexM4 processor is in Thread mode, +;* priority is Privileged, and the Stack is set to Main. +;******************************************************************************** +;* @attention +;* +;* <h2><center>© Copyright (c) 2017 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 +;* +;******************************************************************************* +;* <<< Use Configuration Wizard in Context Menu >>> +; + PRESERVE8 + THUMB + + +; Vector Table Mapped to Address 0 at Reset + AREA RESET, DATA, READONLY + EXPORT __Vectors + EXPORT __Vectors_End + EXPORT __Vectors_Size + + IMPORT |Image$$ARM_LIB_STACK$$ZI$$Limit| +__Vectors DCD |Image$$ARM_LIB_STACK$$ZI$$Limit| ; Top of Stack + DCD Reset_Handler ; Reset Handler + DCD NMI_Handler ; NMI Handler + DCD HardFault_Handler ; Hard Fault Handler + DCD MemManage_Handler ; MPU Fault Handler + DCD BusFault_Handler ; Bus Fault Handler + DCD UsageFault_Handler ; Usage Fault Handler + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD SVC_Handler ; SVCall Handler + DCD DebugMon_Handler ; Debug Monitor Handler + DCD 0 ; Reserved + DCD PendSV_Handler ; PendSV Handler + DCD SysTick_Handler ; SysTick Handler + + ; External Interrupts + DCD WWDG_IRQHandler ; Window WatchDog + DCD PVD_IRQHandler ; PVD through EXTI Line detection + DCD TAMP_STAMP_IRQHandler ; Tamper and TimeStamps through the EXTI line + DCD RTC_WKUP_IRQHandler ; RTC Wakeup through the EXTI line + DCD FLASH_IRQHandler ; FLASH + DCD RCC_IRQHandler ; RCC + DCD EXTI0_IRQHandler ; EXTI Line0 + DCD EXTI1_IRQHandler ; EXTI Line1 + DCD EXTI2_IRQHandler ; EXTI Line2 + DCD EXTI3_IRQHandler ; EXTI Line3 + DCD EXTI4_IRQHandler ; EXTI Line4 + DCD DMA1_Stream0_IRQHandler ; DMA1 Stream 0 + DCD DMA1_Stream1_IRQHandler ; DMA1 Stream 1 + DCD DMA1_Stream2_IRQHandler ; DMA1 Stream 2 + DCD DMA1_Stream3_IRQHandler ; DMA1 Stream 3 + DCD DMA1_Stream4_IRQHandler ; DMA1 Stream 4 + DCD DMA1_Stream5_IRQHandler ; DMA1 Stream 5 + DCD DMA1_Stream6_IRQHandler ; DMA1 Stream 6 + DCD ADC_IRQHandler ; ADC1, ADC2 and ADC3s + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD EXTI9_5_IRQHandler ; External Line[9:5]s + DCD TIM1_BRK_TIM9_IRQHandler ; TIM1 Break and TIM9 + DCD TIM1_UP_TIM10_IRQHandler ; TIM1 Update and TIM10 + DCD TIM1_TRG_COM_TIM11_IRQHandler ; TIM1 Trigger and Commutation and TIM11 + DCD TIM1_CC_IRQHandler ; TIM1 Capture Compare + DCD TIM2_IRQHandler ; TIM2 + DCD TIM3_IRQHandler ; TIM3 + DCD TIM4_IRQHandler ; TIM4 + DCD I2C1_EV_IRQHandler ; I2C1 Event + DCD I2C1_ER_IRQHandler ; I2C1 Error + DCD I2C2_EV_IRQHandler ; I2C2 Event + DCD I2C2_ER_IRQHandler ; I2C2 Error + DCD SPI1_IRQHandler ; SPI1 + DCD SPI2_IRQHandler ; SPI2 + DCD USART1_IRQHandler ; USART1 + DCD USART2_IRQHandler ; USART2 + DCD 0 ; Reserved + DCD EXTI15_10_IRQHandler ; External Line[15:10]s + DCD RTC_Alarm_IRQHandler ; RTC Alarm (A and B) through EXTI Line + DCD OTG_FS_WKUP_IRQHandler ; USB OTG FS Wakeup through EXTI line + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD DMA1_Stream7_IRQHandler ; DMA1 Stream7 + DCD 0 ; Reserved + DCD SDIO_IRQHandler ; SDIO + DCD TIM5_IRQHandler ; TIM5 + DCD SPI3_IRQHandler ; SPI3 + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD DMA2_Stream0_IRQHandler ; DMA2 Stream 0 + DCD DMA2_Stream1_IRQHandler ; DMA2 Stream 1 + DCD DMA2_Stream2_IRQHandler ; DMA2 Stream 2 + DCD DMA2_Stream3_IRQHandler ; DMA2 Stream 3 + DCD DMA2_Stream4_IRQHandler ; DMA2 Stream 4 + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD OTG_FS_IRQHandler ; USB OTG FS + DCD DMA2_Stream5_IRQHandler ; DMA2 Stream 5 + DCD DMA2_Stream6_IRQHandler ; DMA2 Stream 6 + DCD DMA2_Stream7_IRQHandler ; DMA2 Stream 7 + DCD USART6_IRQHandler ; USART6 + DCD I2C3_EV_IRQHandler ; I2C3 event + DCD I2C3_ER_IRQHandler ; I2C3 error + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD FPU_IRQHandler ; FPU + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD SPI4_IRQHandler ; SPI4 + DCD SPI5_IRQHandler ; SPI5 + +__Vectors_End + +__Vectors_Size EQU __Vectors_End - __Vectors + + AREA |.text|, CODE, READONLY + +; Reset handler +Reset_Handler PROC + EXPORT Reset_Handler [WEAK] + IMPORT SystemInit + IMPORT __main + + LDR R0, =SystemInit + BLX R0 + LDR R0, =__main + BX R0 + ENDP + +; Dummy Exception Handlers (infinite loops which can be modified) + +NMI_Handler PROC + EXPORT NMI_Handler [WEAK] + B . + ENDP +HardFault_Handler\ + PROC + EXPORT HardFault_Handler [WEAK] + B . + ENDP +MemManage_Handler\ + PROC + EXPORT MemManage_Handler [WEAK] + B . + ENDP +BusFault_Handler\ + PROC + EXPORT BusFault_Handler [WEAK] + B . + ENDP +UsageFault_Handler\ + PROC + EXPORT UsageFault_Handler [WEAK] + B . + ENDP +SVC_Handler PROC + EXPORT SVC_Handler [WEAK] + B . + ENDP +DebugMon_Handler\ + PROC + EXPORT DebugMon_Handler [WEAK] + B . + ENDP +PendSV_Handler PROC + EXPORT PendSV_Handler [WEAK] + B . + ENDP +SysTick_Handler PROC + EXPORT SysTick_Handler [WEAK] + B . + ENDP + +Default_Handler PROC + + EXPORT WWDG_IRQHandler [WEAK] + EXPORT PVD_IRQHandler [WEAK] + EXPORT TAMP_STAMP_IRQHandler [WEAK] + EXPORT RTC_WKUP_IRQHandler [WEAK] + EXPORT FLASH_IRQHandler [WEAK] + EXPORT RCC_IRQHandler [WEAK] + EXPORT EXTI0_IRQHandler [WEAK] + EXPORT EXTI1_IRQHandler [WEAK] + EXPORT EXTI2_IRQHandler [WEAK] + EXPORT EXTI3_IRQHandler [WEAK] + EXPORT EXTI4_IRQHandler [WEAK] + EXPORT DMA1_Stream0_IRQHandler [WEAK] + EXPORT DMA1_Stream1_IRQHandler [WEAK] + EXPORT DMA1_Stream2_IRQHandler [WEAK] + EXPORT DMA1_Stream3_IRQHandler [WEAK] + EXPORT DMA1_Stream4_IRQHandler [WEAK] + EXPORT DMA1_Stream5_IRQHandler [WEAK] + EXPORT DMA1_Stream6_IRQHandler [WEAK] + EXPORT ADC_IRQHandler [WEAK] + EXPORT EXTI9_5_IRQHandler [WEAK] + EXPORT TIM1_BRK_TIM9_IRQHandler [WEAK] + EXPORT TIM1_UP_TIM10_IRQHandler [WEAK] + EXPORT TIM1_TRG_COM_TIM11_IRQHandler [WEAK] + EXPORT TIM1_CC_IRQHandler [WEAK] + EXPORT TIM2_IRQHandler [WEAK] + EXPORT TIM3_IRQHandler [WEAK] + EXPORT TIM4_IRQHandler [WEAK] + EXPORT I2C1_EV_IRQHandler [WEAK] + EXPORT I2C1_ER_IRQHandler [WEAK] + EXPORT I2C2_EV_IRQHandler [WEAK] + EXPORT I2C2_ER_IRQHandler [WEAK] + EXPORT SPI1_IRQHandler [WEAK] + EXPORT SPI2_IRQHandler [WEAK] + EXPORT USART1_IRQHandler [WEAK] + EXPORT USART2_IRQHandler [WEAK] + EXPORT EXTI15_10_IRQHandler [WEAK] + EXPORT RTC_Alarm_IRQHandler [WEAK] + EXPORT OTG_FS_WKUP_IRQHandler [WEAK] + EXPORT DMA1_Stream7_IRQHandler [WEAK] + EXPORT SDIO_IRQHandler [WEAK] + EXPORT TIM5_IRQHandler [WEAK] + EXPORT SPI3_IRQHandler [WEAK] + EXPORT DMA2_Stream0_IRQHandler [WEAK] + EXPORT DMA2_Stream1_IRQHandler [WEAK] + EXPORT DMA2_Stream2_IRQHandler [WEAK] + EXPORT DMA2_Stream3_IRQHandler [WEAK] + EXPORT DMA2_Stream4_IRQHandler [WEAK] + EXPORT OTG_FS_IRQHandler [WEAK] + EXPORT DMA2_Stream5_IRQHandler [WEAK] + EXPORT DMA2_Stream6_IRQHandler [WEAK] + EXPORT DMA2_Stream7_IRQHandler [WEAK] + EXPORT USART6_IRQHandler [WEAK] + EXPORT I2C3_EV_IRQHandler [WEAK] + EXPORT I2C3_ER_IRQHandler [WEAK] + EXPORT FPU_IRQHandler [WEAK] + EXPORT SPI4_IRQHandler [WEAK] + EXPORT SPI5_IRQHandler [WEAK] + +WWDG_IRQHandler +PVD_IRQHandler +TAMP_STAMP_IRQHandler +RTC_WKUP_IRQHandler +FLASH_IRQHandler +RCC_IRQHandler +EXTI0_IRQHandler +EXTI1_IRQHandler +EXTI2_IRQHandler +EXTI3_IRQHandler +EXTI4_IRQHandler +DMA1_Stream0_IRQHandler +DMA1_Stream1_IRQHandler +DMA1_Stream2_IRQHandler +DMA1_Stream3_IRQHandler +DMA1_Stream4_IRQHandler +DMA1_Stream5_IRQHandler +DMA1_Stream6_IRQHandler +ADC_IRQHandler +EXTI9_5_IRQHandler +TIM1_BRK_TIM9_IRQHandler +TIM1_UP_TIM10_IRQHandler +TIM1_TRG_COM_TIM11_IRQHandler +TIM1_CC_IRQHandler +TIM2_IRQHandler +TIM3_IRQHandler +TIM4_IRQHandler +I2C1_EV_IRQHandler +I2C1_ER_IRQHandler +I2C2_EV_IRQHandler +I2C2_ER_IRQHandler +SPI1_IRQHandler +SPI2_IRQHandler +USART1_IRQHandler +USART2_IRQHandler +EXTI15_10_IRQHandler +RTC_Alarm_IRQHandler +OTG_FS_WKUP_IRQHandler +DMA1_Stream7_IRQHandler +SDIO_IRQHandler +TIM5_IRQHandler +SPI3_IRQHandler +DMA2_Stream0_IRQHandler +DMA2_Stream1_IRQHandler +DMA2_Stream2_IRQHandler +DMA2_Stream3_IRQHandler +DMA2_Stream4_IRQHandler +OTG_FS_IRQHandler +DMA2_Stream5_IRQHandler +DMA2_Stream6_IRQHandler +DMA2_Stream7_IRQHandler +USART6_IRQHandler +I2C3_EV_IRQHandler +I2C3_ER_IRQHandler +FPU_IRQHandler +SPI4_IRQHandler +SPI5_IRQHandler + + B . + + ENDP + + ALIGN + +;******************************************************************************* +; User Stack and Heap initialization +;******************************************************************************* + + END + +;************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE*****