STM32F030C8 based Bluepill

Caution

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Tip

When using this board with RIOT, set the BOARD variable to bluepill-stm32f030c8 in your Makefile. If you follow the standard RIOT project structure, your Makefile should look like this:

./Makefile

# name of your application
APPLICATION = hello-world

# Change this to your board if you want to build for a different board
BOARD ?= bluepill-stm32f030c8

# This has to be the absolute path to the RIOT base directory:
RIOTBASE ?= $(CURDIR)/RIOT

include $(RIOTBASE)/Makefile.include

Support for the STM32F030C8 based Bluepill

Overview

The STM32F030C8 based Bluepill is a very cheap breakout board for the STM32F030C8 MCU.

Hardware

MCU

MCU	STM32F030C8T6
Family	ARM Cortex-M0
Vendor	ST Microelectronics
RAM	8 KiB
Flash	64 KiB
Frequency	up to 48MHz
FPU	no
Timers	8 (2x watchdog, 1 SysTick, 5x 16-bit)
ADCs	1x 12-bit
UARTs	2
SPIs	2
I2Cs	2
RTC	1
Vcc	2.0V - 3.6V
Datasheet	Datasheet
Reference Manual	Reference Manual
Programming Manual	Programming Manual

Flashing the device

The STM32F030C8 based Bluepill board does not include a programmer. You have to connect a separate ST-Link programmer to the (SW)DIO, (SW)CLK and GND pins on the board.

If you want a serial terminal, you have to connect a separate USB-Serial adapter to the PA09 (TX) and PA10 (RX) pins on the board.

The easiest way to program the board is to use OpenOCD. Once you have installed OpenOCD (look here for installation instructions), you can flash the board simply by typing

make BOARD=bluepill-stm32f030c8 flash

and debug via GDB by simply typing

make BOARD=bluepill-stm32f030c8 debug

Known Issues

Flashing fails

The board does not expose a pin for the reset signal but wires it only to the reset button. You can work around this by pressing the reset button when OpenOCD wants to connect to the Blue Pill, or keep it pressed until OpenOCD tries to connect. Hit the reset button again after flashing in order to boot the newly flashed image.