How to disable nRF52 on the board when using nRF52840DK as a debugger

I am attaching an adapter board to the nRF52840DK to debug a custom board.

However, if there is any contact failure on the adapter board, the nRF52 on the DK will be the debug target, not the custom board.

This is correct behavior, but it often causes great confusion when debugging.

I have multiple nRF52840DKs, and I don't have a need for the nRF52 that I use as a debugger.

Is there a way to prevent the debug target from becoming the onboard nRF52?

Of course, this can be achieved by destroying the on-board nRF52, but I would like to solve it with jumper settings if possible.

Parents Reply Children
  • Thank you.
    I tried it right away and it worked fine.

    However, with the old model of nRF52833DK (ver 1.1.0, Atmel SAM series J-Link), it doesn't seem to work well even if I close J47.
    There seem to be some differences, so the jumper specifications may be different.
    However, I could not read from the documentation that the jumpers behave differently depending on the DK version.

    Do you know anything?

Related