debug port off/fuse in nrf52840 custom board

[ys parmar]

how can we  debug port off/fuse  in my custom nrf52840 board  for secure no one is program again only program using dfu.

[Marjeris Romero]

Hi,

You can program and debug external boards using the 'Debug out' on a nRF52 DK or a Jlink debugger:

https://infocenter.nordicsemi.com/topic/ug_nrf52840_dk/UG/dk/hw_debug_out.html

Best regards,

Marjeris