stm32f103-blink

Inspired from Arduino's Blink, this time for an ARM Cortex-M3 MCU (STM32F103)!

Installing ARM GNU Toolchain on Mac

If you don't already have the ARM GNU Toolchain, then you can install it via brew.

$ brew tap osx-cross/arm
$ brew install arm-gcc-bin

Cloning and compiling libopencm3

$ cd !$
$ git submodule update --init # (Only needed once)
$ pushd libopencm3 && make && popd

Compiling the software

$ make -C src

To run with GDB (ARM GNU GDB)

For st-util:

$ arm-none-eabi-gdb src/stm32f103-blink.elf
$ > target extended-remote :4242
$ > load
$ > run

For Black Magic Probe

$ arm-none-eabi-gdb src/stm32f103-blink.elf
$ > target extended-remote /dev/tty.usbmodemXXXXX
$ > monitor tpwr enable !if not powered by another source
$ > monitor swdp_scan
$ > attach X
$ > load
$ > run

To open the serial communication (using tio)

$ tio --baudrate 115200 --databits 8 --flow none --stopbits 1 --parity none /dev/tty.usbmodemXXXXX

Sources

• libopencm3-template
• rhye.org - STM32 programming with libopencm3