My computer can connected to debugger , but when I key the command it like this
==================command start=====================
cd /d C:\Program Files (x86)\Nordic Semiconductor\nrf5x\bin
nrfjprog --program burn.hex --sectorerase
nrfjprog -r
==================command stop======================
It will show
ERROR: There is no debugger connected to the PC with the given serial number.
How can I fix it ?