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.

[Steven Grunza]

Under the <Jlink-v6.xx> selection from the Start menu (or whatever the Windows 10 equivalent is) there should be an option to run SEGGER's J-Link Commander. Once the Commander connects to the J-Link pod you should be able to get some more diagnostic info from the Commander about what it is seeing on the pod. One possibility is that it has defaulted to using a JTAG connection instead of SWD.

Which J-Link pod do you have? The J-Link lite only works at 3.3V - we got burned with that one on a low Voltage custom board.

[Jorge]

I am using the nrf51-DK as a J-tag between the computer and the custom board. I will test the commander and see if it shows up some more information.