Resolved! I connected the +5v pin to the ground pin by mistake
Posted on July 21, 2017 at 12:02i have stm32l152c- discovery board. i connected the +5v pin to the ground pin and now it seems work on very low power mode and ld1 not lit up and ld2 , ld3 and ld4 lit up very weak. pc not recognize the board. what ca...