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Unable to connect to Thingy:91 with at_client using Link Monitor

mdjarv

I have flashed my Thingy:91 via the nRF9160 DK using the Programmer with the pre-built at_client software, but I am unable to get any AT response when I connect using the Link Monitor.

The Thingy:91 is connected with both the programming cable as well as the USB cable, and I connect directly to it via its COM ports (doesn't make a difference if I have "Auto device/port filter" selected or not). Nothing comes out in the black log window, and if I try to send AT it just times out.

The switch on the device is set to nRF91, and I have tried this on both Windows and Linux with the same result.

I have also tried to install my own built software that I have previously tested on the DK but I can not get any debug logging in the Link Monitor for that software either on the Thingy:91

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    Hi.

    Is the Link Monitor able to connect to the Thingy, but you do not get any output, or is the Link Monitor unable to connect to Thingy at all?

    Have you gotten output from the Thingy before?

    Do you get any output if you use a different terminal emulator?

    Can you send me the log from the Link Monitor (at the bottom of the screen)?

    Can you try to program the default firmware back to both the nRF9160 and the nRF52840?

    I have attached the default firmware for both the nRF9160 and the nRF52840.

    thingy_firmware.zip

    Best regards,

    Didrik

  • 0 in reply to Didrik Rokhaug

    The Link Monitor can connect, but I get no output. The Link Monitor works well with my DK but not the Thingy:91

    I have on two occations seen actual UART output printed from the thingy, one of those times was with the at_client firmware and the other was probably with the default firmware, it still did not respond to AT commands either of those times though.

    I've connected both with and without the device port/filter option but it does not make a difference.

    Same problem with other terminal emulators.

    I'll flash the firmware you provided and generate some logs when I get back to the office on monday, thanks for taking the time to help.

    Regards,
    Mathias

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  • 0 in reply to Didrik Rokhaug

    The Link Monitor can connect, but I get no output. The Link Monitor works well with my DK but not the Thingy:91

    I have on two occations seen actual UART output printed from the thingy, one of those times was with the at_client firmware and the other was probably with the default firmware, it still did not respond to AT commands either of those times though.

    I've connected both with and without the device port/filter option but it does not make a difference.

    Same problem with other terminal emulators.

    I'll flash the firmware you provided and generate some logs when I get back to the office on monday, thanks for taking the time to help.

    Regards,
    Mathias

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