please check the image below. actually i was working on stm32f030c8 for more than a month, but today while debugging i stuck to an unknown problem, my device is not detecting on target. i checked all connections wirings everything multiple times but still couldn't find any solution. but other stm boards with same MCU are working fine. only my board is not getting detected, i also tried with copy of that same Pcb but same problem ocuurs.
any help from you will be admired!
