Some of my stuff I've done for my BluePill board uwu
I decided to not use CubeIDE and went for open-source alternatives.
https://github.com/stlink-org/stlink
https://github.com/libopencm3/libopencm3
https://vivonomicon.com/2018/04/02/bare-metal-stm32-programming-part-1-hello-arm/
https://www.youtube.com/watch?v=YEGKD6JQJyM
https://github.com/EZdenki/STM32F103-CMSIS-Libraries-and-Projects?tab=readme-ov-file