Flash problem

RE: Flash problem

nordicxup — Wed, 24 Jun 2020 09:41:28 GMT

Thanks a lot. Yes, it works after pulling the reset pin directly to VDD on the nRF52840 before running the recover command.

RE: Flash problem

Jørgen Holmefjord — Wed, 24 Jun 2020 09:32:47 GMT

It could be related. How is the Raytac DK powered? Did you manage to flash it before? You have not added something in your code that will pull the reset pin low? If you did, you can try pulling the reset pin directly to VDD on the nRF52840 before running the recover command.

Another alternative to try is to run recover command in a loop, it may succeed on one of the calls.

RE: Flash problem

nordicxup — Wed, 24 Jun 2020 05:36:48 GMT

Hi Jordan,

Thanks for your reply. The command did not work. I also tried the other commands such as "nrfjprog -e" not work, too.

Actually I use 52833DK to flash Raytac nrf52840DK by jLink not Nordic official DK. Is it the matter?

Here is the result.

C:\Users\User>nrfjprog --recover --log
Recovering device. This operation might take 30s.
ERROR: Recover failed. Please make sure that the correct device family is given
ERROR: and try again.

Attached is the log file.

devzone.nordicsemi.com/.../8284.log.log

RE: Flash problem

Jørgen Holmefjord — Tue, 23 Jun 2020 09:24:24 GMT

Hi,

Try using nrfjprog with the --recover option.

Best regards,
Jørgen