2021-03-24 12:30 AM
2021-03-24 02:21 AM
Take "stm32" out of your google search - the answer will apply to any Cortex-M0 class of microcontroller.
In fact, don't even search on "Cortex-M0" - just try "microcontroller"
You need to give more details; eg,
EDIT
Apart from a normal Google search, try searching GitHub ...
(other internet search engines are available)