qmk_firmware/keyboards/handwired/onekey/stm32f0_disco
..
chconf.h
config.h
halconf.h
mcuconf.h
readme.md
rules.mk

readme.md

STM32F072 Discovery kit onekey

Supported Hardware: https://www.st.com/en/evaluation-tools/32f072bdiscovery.html

To trigger keypress, short together pins B4 and B5.