Programming external/custom NRF52832 board using NRF52-DK

[Li]

Hi All,

We are trying to flash our custom NRF52832 board using NRF52-DK+nrf studio. With the same setup that's suggested by devzone.nordicsemi.com/.../

However, from the nrf studio, we can never see the external board (nrf5x programming menu item is greyed out).

We've also tried to using a j-link/jtag but were still unable to see the external board.

We've tested the power supply on the custom board while connecting it to the DK board (2.8v, required 3.3v). Don't know if this could be the problem?

Thanks a lot!

L.

[Matt]

I have the same wiring setup to flash a custom board using the PCA10040. I don't think you will see the "nRF5x programming menu" light up as the programming is still going through the JLink OB in the PCA10040, so I just pick the menu item "nRF52 development boards - Segger xxxxxxxx".

[endnode]

Hi @rahulnrf, firstly always post new question unless yours is equal to the original (which isn't the case here). Secondly this is pretty much for Adafruit forum not here. And finally to your question: SWD pins on the back of this board seems to be connected directly to nRF5x chip on BLE module so yes, they are usable for direct debugging/flashing. However Adafruit warns you that you might end up in state where board won't work with their tools and environment any more. So as always with direct JTAG/SWD access to any chip make sure you know what you are doing.