Some may ask why you’d want to program a Cortex-M microcontroller like the STM32 series using nothing but the ARM toolchain and the ST Microelectronics-provided datasheet and reference manual… ...

Good STM32 IC on the left, clone on the right, with extra dimples. Earlier this year, Keir Fraser posted an informative summary of some fake STM32F103 ICs as found on so-called ‘Blue Pill’ and ...