nRF52840 Dongle

[JamesBellville]

I have a new nRF52840 Dongle which seems to have either had a hardware failure while updating its bootloader or the updating was unsuccessful and now the device does not flash the red led, what can I do to update the bootloader or test the hardware?

[Dra6on]

Hi,

I got the same issue, but it gets to blinking mode arfter pressing reset button.
Check the manual here.

[JamesBellville]

Thankyou, that sorted it out

[awneil]

awneil said:

at least one per day on this public forum

a mere 4 hours later:

https://devzone.nordicsemi.com/f/nordic-q-a/40116/to-form-a-mesh-network-by-using-ipv6-over-ble-with-contiki-os/155953#155953

[Bjørn Kvaale]

Thanks for that awneil, I will mention this internally.

[Bjørn Kvaale]

Are you referring to the Thingy:52 or the 52840 dongle when you write 52840 Thingy? If you want to program the 52832 Thingy:52, you can either use DFU via the Thingy app (iOS or Android) or via the debug out port on the DK & a SWD cable. The documentation here could also be helpful.

[JamesBellville]

I was hoping to program via the USB port on the Thingy 52, but I see from the documentation that it is only for charging the battery

[Bjørn Kvaale]

Yes, the USB is only for charging. You will need to do what I explained in my last comment to program or upgrade the FW. The reason is because the Thingy:52 does not have an integrated Segger J-Link chip (unlike the DK, which does).