CMake-based STM32F401 Template (Black Pill)

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Based on https://github.com/ahessling/STM32F4Template

As an addition;

• style fixer tool (astyle) can be use with ./code-format.sh
• make monitor will open picocom serial terminal

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Toolchain

• Install arm toolchain from https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads
• Install cmake and make build tools
• Install openocd to upload binaries to the Flash. https://github.com/xpack-dev-tools/openocd-xpack/releases

Build

./build.sh
cd build
make  

Download binary

make flash  # this will run openocd if it is found during cmake process

or using openocd commands directly

$OOCD_DIR/src/openocd -s $OOCD_DIR/tcl -f interface/stm32f4x-jlink.cfg -c "init; reset halt; stm32f2x unlock 0" -c "flash erase_sector 0 0 last" -c "flash write_bank 0 build/src/blackpill.bin 0" -c "reset; exit"

$OOCD_DIR/src/openocd -s $OOCD_DIR/tcl -f interface/stm32f4x-jlink.cfg -c "program build/src/blackpill.elf reset; exit"

Serial terminal

make monitor # this will run picocom with 115200 8N1 

Of course you can run all commands in one shot

make flash monitor

Debug

OpenOCD tcl scripts can be copied from the tools directory to the openocd shared tcl directory

For the Stlink debugger you can find the config file inside tools/stm32f4discovery.cfg

For the Segger Jlink debugger you can find the config file inside tools/stm32f4x-jlink.cfg

To start debugging, run openocd with the compatible board config file. e.g.

$OOCD_DIR/src/openocd -s $OOCD_DIR/tcl -f board/stm32f4x-jlink.cfg

Then, run gdb

arm-none-eabi-gdb -x tools/gdbinit --se build/src/blackpill.elf

For the FreeRTOS thread awareness you need to add -rtos parameter to the target create script inside tcl/target/stm32f4x.cfg

target create $_TARGETNAME cortex_m -endian $_ENDIAN -dap $_CHIPNAME.dap -rtos FreeRTOS