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".

[Li]

Hi Matt,

This sounds a bit more confusing. How do you know you've flashed the softdevice to the external board i n the first instance? Do you mean you can see two region infor under the development board menu in NRF studio? .

We can only see one region (the development board region).

Thanks

L.