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28 April '21 /
Often the nRF52 micros get stuck or misbehave and reach a weird state with the pairings. Often the solution is just to clear them so here’s adafruit’s code to do that and a platform.io ini to make it easy.
[env:clearbonds] platform = nordicnrf52 board = particle_xenon framework = arduino The board can be any nrf52 board, it can be any generic board that uses the same chip that you actually have.
22 April '20 /
First of all, lets flash Adafruit’s NRF52 bootloader for easier future flashing
My J-Link was “Broken. No longer used” - or so the JLink tools said (AKA bought from e-bay). So I had to go to openocd).
Connect the J-Link (or any SWD capable debugger supported by openocd - even an FT232 breakout will do) to the target - I have a Bluefruit by Adafruit.
pip3 install --user intelhex cd Adafruit_nRF52_Bootloader git clone https://github.