nRF52 preview DK

[pltv]

I have an external board based on nRF51822 QFAC. I have a nRF52 preview DK. Will it be possible to detect my external board if connected via the preview DK. I tried and the external board did not show up. Just wondering if anyone has tried this before.

[endnode]

By "detect" you mean JTAG/SWD interface when you are using "shiled"/"debug out" ports P19 or P20 on the DK? What SW are you suing (pyOCD, nRFgo Studio, nrfjprog, SEGGER J-Flash, ST-Link...)?

[pltv]

Yes via the SWD interface.

[MartinBL]

Hi. Yes this is exactly what the Debug Out pin headers (P19 and P20) are meant for and should be possible. Have you remembered to power your external board? The Debug Out headers will not provide power to your external board.

[pltv]

Yes. I have an nRF51 DK board and my external board is detected via the SWD interface from the nRF51 board. I am trying to accomplish the same via the nRF52 board but does not detect my external board. Everything else is the same. The SWD pins, are the interface the same in NRF52 board compared to the nRF51 board? The pin order etc do they remain the same?

[MartinBL]

That is strange. Looking at the reference layout files for nRF51 DK and nRF52 DK the pinout should be identical. Maybe it is a driver issue? What J-Link drivers are you using?