RE: nrf52840 not recognized after flashing using nrfutil

jdamian — Wed, 15 Jul 2020 16:31:19 GMT

Hi Edvin, thanks for clarifying. It seems like resetting the dongle again did the trick, not sure why it wasn't working when I first tried it. Thanks!

RE: nrf52840 not recognized after flashing using nrfutil

Edvin — Wed, 15 Jul 2020 16:21:13 GMT

Hello,

Does the red LED start flashing (breathing) when you press the reset button on the dongle while it is powered? Note that the reset button is the button next to the big white button.

[quote user=""]and my device is neither recognized by the nrfconnect software or nrfjprog (nothing is shown when I run nrfjprog -i).[/quote]

That will always be the case with the dongle, because it doesn't have a debugger.

[quote user=""]recovering using nrfjprog[/quote]

That will not work either. In fact, nrfjprog doesn't work on the dongle, as it doesn't have a debugger.

[quote user=""]pressing the reset button multiple times and re-flashing using nrfutil with no success[/quote]

Does this mean that it starts blinking red when you press the button?

Note: After you program your custom application to the nRF52840 dongle, it will only be recognized by a computer if that application uses the USB peripheral. If not, the USB pins on the dongle are not connected to anything.

Best regards,

Edvin