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Nordic Case Info
  • Case ID: 319068
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The modem fails to write via J-link，But the application core is working

Weeknd

J-Link does not recognize the chip, but can write and debug normally：

The modem fails to write：

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  • 0

    Hi,

    Which board do you use? 

    Where did you get modem file from?

    Could you provide more information about your screenshots?

    Best regards,
    Dejan

  • 0 in reply to dejans

    Hi，

    I used the nRF9161-DK development board and a board of my own design. When using the development board, I can burn programs written into the modem, but I can't burn successfully using the board we designed. Our board is using jlink as the emulator, perhaps because the emulator is different when burning?


    modem file: mfw_nrf91x1_2.0.0 is downloaded from the official website.

    The first screenshot shows that VsCode cannot detect the chip when connecting the board we designed using jlink, but can burn and debug it
    The second screenshot shows the programmer's state when burning modem firmware using jlink, unable to select the write option

  • 0 in reply to Weeknd

    Hi,

    Regarding the issue with Programmer application, have you pressed first "Erase all" button before you tried to press on "Write"?

    Best regards,
    Dejan


  • 0 in reply to dejans

    Hi，

    I pressed first "Erase all" button before I pressed on "Write"，The operation process is shown in the screenshot：

    Here is the log of the software

  • 0 in reply to Weeknd

    Hi, Dejan is currently on vacation, so I have taken over this ticket.

    I have asked our developers to look at this, and will get back to you when I have more information.

    Best regards,

    Didrik

Reply
  • 0 in reply to Weeknd

    Hi, Dejan is currently on vacation, so I have taken over this ticket.

    I have asked our developers to look at this, and will get back to you when I have more information.

    Best regards,

    Didrik

Children
  • 0 in reply to Didrik Rokhaug

    Can you enable verbose logging, and send us the log?

    Verbose logging can be enabled in the "About" panel:

  • 0 in reply to Didrik Rokhaug

    Hi，

    Here is the verbose log：

  • 0 in reply to Weeknd

    Thanks.

    The problem is probably that the underlying library only uses the serial number of the debugger to determine if the device supports writing modem FW or not.

    As a temporary workaround until we can fix the issue, can you try to use the Debug Out port on your nRF9161DK instead of a stand-alone debugger?

  • 0 in reply to Didrik Rokhaug

    Thanks.

    May I have an approximate time for the problem? If possible, could you tell me the progress on devzone？

    So how to connect the development board hardware can use the debug port on the 9160DK?

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