Add USB Circuit CP2102 to the STM32 #29
Description
The STM32 should be programmable through a USB.
To do so, add USB to UART circuit to interface with the STM32.
Add a button to the boot pin of the STM32.
Use the CP2102 IC or an equivalent.
The USB connection will be used to communicate with the STM32 UART or to program it without the need of SWD.