This is the minimum LED code for STM32
===== HARDWARE =====
[MAC/PC] <-(usb)-> [STLINK/V2] <-(swd)-> [Bluepill/STM32F103C8] <-(PC13)-> LED
===== SOFTWARE (see Makefile) =====
arm-none-eabi-{gcc,ldf,as} ST-Flash utility (https://github.com/texane/stlink)
===== Operation Procedure =====
- Type "make" to make $(TARGET).{elf,bin}
- Type "make flash" to load into STM32/Bluepill via [STLINK V2]
- Now, you shall see the LED is blinking.
===== THE END =====