DK no longer recognised

RE: DK no longer recognised

dejans — Tue, 15 Aug 2023 08:44:21 GMT

Hi,

I am glad that your issue has been resolved.

Best regards,
Dejan

RE: DK no longer recognised

watarata — Mon, 14 Aug 2023 01:43:56 GMT

SOLVED:

Well - problem sorted.

When I went to grab the DK to hook up to different computer, I found that Microsoft had decided to update/reboot my main computer behind my back(as they are want to do).
After reboot, as a matter of interest, before moving the DK - I fired up VSCode - and lo and behold - the DK Turned up as expected.

I've been able to upload code & debug just fine since. (Including the Beacon Example which I thought might have been the issue)
So my CMD terminal windows and VSCode etc were all shutdown (don't know if just closing all of them would have been sufficient ??)

Something certainly had things locked up, probably best advice for anyone finding something similar is "Try rebooting windows"
Not at all intuitive - but always the final goto since Win3.11 😜

Thanks to all who suggested another machine etc - even when that seemed not likely as it 'was working perfectly and nothing had changed'.

RE: DK no longer recognised

leox — Thu, 10 Aug 2023 23:44:57 GMT

Hi Richard,

In case PC driver related, any chance to try nrfjprog --recover on a different PC?

what is the nrfjprog version 'nrfjprog --version'.

also could try the J-Link Configurator app and see if able to detect the j-link and see if able to replace the J-Link firmware.

RE: DK no longer recognised

watarata — Thu, 10 Aug 2023 16:01:13 GMT

Yes, anything which 'talks to the target' seems to hang.

C:\Users\Owner>nrfjprog --com
1050266490    COM5    VCOM0
1050266490    COM4    VCOM1

C:\Users\Owner>nrfjprog --recover
^C                                 //(allowed >1minute to complete then ^C to terminate)
C:\Users\Owner>nrfjprog --reset
^C                                 //(allowed >1minute to complete then ^C to terminate)
C:\Users\Owner>nrfjprog --eraseall
^C                                 //(allowed >1minute to complete then ^C to terminate)
C:\Users\Owner>

RE: DK no longer recognised

dejans — Thu, 10 Aug 2023 14:35:39 GMT

Hi,

Have you tried recovering the board using "nrfjprog --recover" from command line?

Best regards,
Dejan

RE: DK no longer recognised

watarata — Thu, 10 Aug 2023 07:35:21 GMT

Further info based on previous replies to similar problems.

The board does not turn up as "BOOTLOADER" , but as JLINK?

The Green LED flashes a couple of times rapidly on power on, then goes solid green for about 10 seconds, then begin a 'very quick off' flash at about 1Hz . Same if RST button is held or not. 🤔