Pro Micro nRF52840 - how to use with nRF Connect SDK?

[glowdev]

Hi Nordic DevZone,

We recently acquired some Pro Micro nRF52840 Dev Boards (link) and were looking to use them with the nRF Connect SDK. The boards use a UF2 bootloader (Adafruit), and so we used the board in nRF Connect promicro_nrf52840. 

We have not even been able to get the board’s LED to blink with an example code or get the board to show up as USB serial to print logs, let alone get BLE or Zigbee to work. The board works with CircuitPython, however BLE does not work through this. We have confirmed that BLE works on the board by flashing a ZMK Bluetooth Keyboard UF2 firmware, through which it showed up in the BLE advertisment scanner.

Details about the board can be found at https://github.com/joric/nrfmicro/wiki/Alternatives - it is the first one.

If anyone has any ideas or tips, please let us know.

Thank you!

[glowdev]

Haven’t tested but I got this as a reply:

www.reddit.com/.../

[Hoppach]

I face the same issue with the Promicro nRF52840 board. Yes, it works well when programmed with an UF2 file. But this is not an integration to the nRF Connect SDK exploiting the full potential of the IDE. Is there a way to flash it with an alternative bootloader allowing for loading and debugging out of the nRF Connect SDK?

Thanks

[sasith_ind]

Did you get it working with a uf2 you made? How did you make the uf2 file?. I couldn't get it to work with the uf2 from the nrfconnect