I would like to write some code for the STM32 Blue Pill to use the USB as a serial link. Because I use an ST-Link debugger to program the board, I will need to connect the following:
- Programming: laptop - ST-Link - STM32
- Testing: laptop - USB - STM32
I can connect them one at a time, but it would really hamper the test process, going back and forward repeatedly. It would be nice if I could have them connected at the same time.
I read the following at https://stm32-base.org/boards/STM32F103C8T6-Blue-Pill.html:
Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.
I'm not sure what this means. Will I damage anything by having both of the above mentioned connections at the same time?