I am having customized PCB board for particular application. i connected pcb board through ST-LINK/V2 through which i shaving 5 pins . 5V,GND, JTCK,JTNS,NRST. My question is should i connect external power supply to flash the program ?
should i connect external power supply to flash the program.when i connect ST-LINK/V2 to PCB board i get the error called "no cortex-m device found"."no target is connected".Please anyone help me to flash the program to my customised pcb board.