nRF52840-DK not detected

RE: nRF52840-DK not detected

mksth — Thu, 02 May 2024 14:09:02 GMT

Hi, I have simmilar issue. I have USB connected my nRF52840 with my Windows 10 computer. The "Led 5" blinks quite fast. The board can't be discovered by my machine. I see that device manager doesn't reload after plugging / unplagging the board. I have tried with 5 cables, so I think I can exclude cable issue. I have installed:

- nrfjprog version: 10.24.2 external
- JLinkARM.dll version: 7.96f

My board:

- PCA10056
- version number 3.0.0 2022.36

Any thoughts?

Update: I just bought 6th cable. The board started work!

RE: nRF52840-DK not detected

tesc — Thu, 07 Jul 2022 09:26:30 GMT

Hi,

I have seen some similar issues the first time connecting an nRF52840 DK version 3.0.0 to the computer, but not after giving it some time (probably for drivers to initialize properly.)

Regarding the --family option, if it is not supplied then nrfjprog should automatically detect the device family. Can you try without the --family option?

Do you get any output from the below command?

nrfjprog -i

Regards,
Terje

RE: nRF52840-DK not detected

xhr0428 — Wed, 29 Jun 2022 15:36:12 GMT

DK version is 3.0.0, 2022.21

nRF command line tool is already 10.16.0, J-Link version is 7.66a

It still doesn't work

RE: nRF52840-DK not detected

tesc — Wed, 29 Jun 2022 14:11:09 GMT

Hi,

What version of the nRF52840 DK is this?

The version should be printed on a sticker on the DK, with the code for the nRF52840 DK (PCA10056) followed by a version number and a date on the format YYYY.WW (where YYYY is year and WW is week number.) Recent DK versions are not necessarily supported by old nRF Command Line Tools versions or older J-Link drivers.

The latest version of nRF Command Line Tools is version 10.16.0. You can check what version you have through the command nrfjprog --version. If you have an older version, please upgrade to the newest version and try again. Remember to accept the J-Link install as well, for the latest J-Link drivers. The latest nRF Command Line Tools and J-Link driver support the latest DK revisions.

Let me know if the above does not work, so we can look further into the issue.

Regards,
Terje