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Failing to Pair with "Bluetooth Low Energy" Desktop (V3.0.0)

user4223

Good Morning and a Happy New Year,

I try to test an application, using the nRF Connect for Desktop (on a Mac). While trying to pair with an application that supports LESC with "Display Yes/No" IO capabilities, I see that my application and nRF Connect exchange Pairing Request and Pairing Response, but that nRF Connect does not start the public key exchange. Instead I see some error messages in the logs of nRF Connect:

    `Error when calling replySecParams: Error: Error occured when replying sec params. Errorcode: Unknown value (0x8005)`

As pairing works with other clients (but is not as comfortable as nRF Connect), I consider this to be a bug in nRF Connect. In case, you are interested in investigating this, I will try to provide everything to reproduce this issue (see attached files).

best regards,

Torsten

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  • 0 in reply to user77782

    Hi Amanda,

    please see the already attached `2022-01-07T07_02_32.114Z-log.txt`I guess that's what you name a device log. The sniffer log is in the already attached `ble_pair.pcapng` (can be opened, using Wireshark).

    I'm using a third party BLE library for nRF52. But, as I wrote, I suspect the issue to be in the nRF Connect Desktop application, not in the firmware. (Because of the missing Public Key Exchange [which has to be initiated by the Controller, not the Peripheral] and because the provided binary [gpio.hex] works against other generic GATT clients)

    If you provide me a binary, I would be happy to test your binary against nRF Connect Desktop.

    best regards,

    Torsten

  • 0 in reply to user4223

    Hi, 

    Are you using DK or custom board? Do you have DK to test with for nRF52832DK;   for nRF52840DK?

    I cannot reproduce with those image on DKs pairing with the nRF Connect for Desktop/BLE app. Is it possible to test on your side? 

    Is it possible to capture sniffer log before the application connect to the nRF Connect for Desktop/BLE app? I need the sniffer log starting before the device connects to app. Thanks.  

    -Amanda

  • 0 in reply to user77782

    Hello Amanda,

    I'm so sorry. It turned out, that I've (again) stumbled over the Mac / Segger MSD problem (https://wiki.segger.com/J-Link_OB#Problem_description). After disabling MSD on the eval board connected to the nRF Connect for Desktop, everything works as expected.

    Thank you very much for your Time.

    Best regards,

    Torsten

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