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  • Case ID: 323085
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Nordic nrf52840DK board is failing to connect w/ newest NRF Connect Desktop v4.4.0 and w/ Segger Embedded Studio

ant

Hi,

I need help with my Nordic nrf52840DK board. Its is now failing to connect with the latest NRF Connect Desktop v4.4.0

I plug the board into the USB port of my macbook pro (MacOS BigSur v11.7.0) and the RSSI desktop app sees the jlink serial number but there's always an error that says failed to open device. and I tried to match what the NRF Connect version wants (it's looking for 7.88j) but there's only version 7.88n that is downloadable and upgrading to that version doesn't work either and fails the same.

The additional problem now is I cannot use my nrf52840DK board which Segger Embedded Studio (using several versions: 7.12a, 5.68, 5.34) stopped finding.

Any ideas or fixes to this recent observed failures w/ 52840DK boards working w/ NRF Connect Desktop and Segger Embedded Studio ?

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  • 0

    Hi,

    I need help with my Nordic nrf52840DK board. Its is now failing to connect with the latest NRF Connect Desktop v4.4.0
    I plug the board into the USB port of my macbook pro (MacOS BigSur v11.7.0) and the RSSI desktop app sees the jlink serial number but there's always an error that says failed to open device. and I tried to match what the NRF Connect version wants (it's looking for 7.88j) but there's only version 7.88n that is downloadable and upgrading to that version doesn't work either and fails the same.

    Did you use RSSI Viewer application from nRF Connect for Desktop? Have you tried programming the device when prompted to do so?

    Best regards,
    Dejan

  • 0 in reply to dejans

    I tried to use RSSI Viewer but failed to do so and yes I tried to program the device when prompted but that also failed even though the serial number is "seen" but NRF connect fails to open the connectivity to my 52840DK...... I also tried drag and dropping the OB bin file from Segger for the Nordic 52840DK board but after that the same failures still occur

  • 0 in reply to dejans

    Unfortunately as we started our discussion on this track, NRF Connect Desktop cannot program the nrf52840DK board and I get the following under Programmer v4.2.0 when I select the nRF52840DK board

    10:59:52.665
    Getting serialport options from persistent store 000050112046.pc-nrfconnect-programmer
    10:59:57.548
    Error: Failed with exit code 1. Failed to device info one or more devices: * 683994613: [jlink] JLINKARM_DLL_ERROR, code: Nrfjlink. Message: Operation device-info failed, [jlink] JLINKARM_DLL_ERROR.
    10:59:57.553
    Using nrfutil device to communicate with target via JLink
    10:59:58.150
    Reading readback protection status for Application core
    10:59:58.151
    Failed to reading readback protection status for application core core. Error: [object Object], message: Batch task protection-get failed, [jlink] JLINKARM_DLL_ERROR
    10:59:58.154
    Error: Failed with exit code 1. One or more batch tasks failed: - [jlink] JLINKARM_DLL_ERROR, code: Nrfjlink. Message: Batch task protection-get failed, [jlink] JLINKARM_DLL_ERROR.
    10:59:58.155
    Error: Failed with exit code 1. One or more batch tasks failed: - [jlink] JLINKARM_DLL_ERROR, code: Nrfjlink. Message: Batch task protection-get failed, [jlink] JLINKARM_DLL_ERROR.
  • 0 in reply to ant

    Hi,

    You could try to erase/recover your device.

    Best regards,
    Dejan

  • 0 in reply to dejans

    that would not be recommended because if I erase the control chip, i would be bricking the nrf52840

  • 0 in reply to ant

    oh you meant the nrfjprog recovery ... i tried that but it did not work

  • 0 in reply to ant

    Hi,

    Are you able to use "west build" and "west flash" successfully to build and flash your nrf52840-dk board?

    Best regards,
    Dejan

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