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  • Case ID: 286429
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Cannot connect J-Link with the Programmer in nRF Connect

Nikosant03

Hi everyone,

I am not able to connect my J-Link plus compact with the programmer in nRF Connect.

It returns the error Unsupported device. The detected device could not be recognized as neither JLink device nor Nordic USB device.

Versions:

nRF Connect: 3.10.0

Programmer: v2.3.3

I confirm that I can flash the target using either nrfjprog or SES 

This is the entire log file:

2022-03-24T10:04:43.799Z INFO Application data folder: C:\Users\n.antoniou\AppData\Roaming\nrfconnect\pc-nrfconnect-programmer
2022-03-24T10:04:43.899Z DEBUG App pc-nrfconnect-programmer v2.3.3 official
2022-03-24T10:04:43.899Z DEBUG App path: C:\Users\n.antoniou\.nrfconnect-apps\node_modules\pc-nrfconnect-programmer
2022-03-24T10:04:43.899Z DEBUG nRFConnect 3.10.0, required by the app is (^3.10.0)
2022-03-24T10:04:43.899Z DEBUG nRFConnect path: C:\Users\n.antoniou\AppData\Local\Programs\nrfconnect\resources\app.asar
2022-03-24T10:04:43.899Z DEBUG HomeDir: C:\Users\n.antoniou
2022-03-24T10:04:43.900Z DEBUG TmpDir: C:\Users\NDD0A~1.ANT\AppData\Local\Temp
2022-03-24T10:04:44.938Z DEBUG iface: Ethernet
2022-03-24T10:04:44.938Z DEBUG IP4: 
2022-03-24T10:04:44.938Z DEBUG IP6: 
2022-03-24T10:04:44.938Z DEBUG MAC: f8:75:a4:49:7a:90
2022-03-24T10:04:44.939Z DEBUG Client Id: 15aecafb96116e69da25e11736d511db9f6fa932
2022-03-24T10:04:44.940Z DEBUG Google Analytics for category pc-nrfconnect-programmer has initialized
2022-03-24T10:04:48.120Z ERROR Unsupported device.
            The detected device could not be recognized as
            neither JLink device nor Nordic USB device.

Any suggestion?

  • 0

    Hi,

    What device do you have connected to your J-Link plus compact? 

    Please upload a log showing this with verbose logging enabled. Enable verbose logging and restart the application with verbose logging from the 'About' tab in the Programmer app.

    Best regards,

    Marte

  • 0 in reply to Marte Myrvold

    Thank you Marte,

    Unfortunately, this error is not repeatable, sometimes the programmer works and recognizes the target and sometimes it won't. Also, I have noticed that as soon as enable the verbose logging and restart the programmer it works fine. In the midtime, I experience an issue with the J-Link probe and I am not sure if this is behind the issue. I am in contact with Segger about that.

    I will close the ticket for now and reopen it if the issue persists.

    Thank you for your time!!

  • +1 in reply to Nikosant03

    Hi,

    Since it works sometimes but not others it is possible that the issue is due to a bad connection somewhere. JLink debuggers will not show up in the Programmer if they are not connected to anything, so you need to have it connected to a supported device and the device must be turned on in order for it to show up.

    Best regards,

    Marte

  • 0 in reply to Marte Myrvold

    Hi Marte and thank you for your support. Indeed the problem was due to a bad connection that was causing the J-Link to read wrong reference voltage. It is fixed now.

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