nrfgo studio doesn't see my custom board

[Jorge]

Hello all,

I am trying to program my custom board using the debug out from the nrf51-DK. I connect all the needed pins and on the nrfgo select the Segger but when I do this my nrf51-DK resets and it doesn't show me nothing.

I already reinstalled the nrfgo studio 1.21.2, also the JLink controlers. I am using a windows 10 64 bit, and already tried to check the registry which I saw in this thread and the path is correct.

Also tried to use the software for the command window the nrfjprog and it says that he cannot detect the board.

Also tried to power on the DK on bootloader mode and flash the JLink to it, but it also didn't help.

If I disconnect my custom board I can detect the nrf51422 inside.

Do I need to connect more than the VTG, SWDIO, SWDCLK and GNDs?

EDIT: I have tested using the P19 and P20 for the debug out and had the same results.

I think my problem is the same as found on this question.

[butch]

I would start with making nrfjprog able to recognize and flash the board. Have you tried "nrfjprog --recover --family NRF51"? (That clears all flash and unlocks the lock on the flash.) Also, have you tried powering your board separately? (That is what I do with the NRF52DK.) There are many more posts in the forum about the proper way to connect and power your custom board. You say "GNDs" plural : I recall a post saying that only GND_DETECT is needed (but it has worked for me with GND and GND_DETECT together.)