Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-91426

Reading all BTLE characteristics in discovery leads to errors

    XMLWordPrintable

Details

    • 13
    • b948d2b489904cd7ac8cbb963c54da9a13406f08
    • Qt6_Foundation_Sprint 29, Qt6_Foundation_Sprint 33

    Description

      From the Interest mailing list, by Roberto Viola: http://robertoviola.cloud/

      Hi, i'm developing a central app on android and ios that connects with several types of devices (most of them are fitness machinery).

      I'm facing a simple issue and I would like to ask you why Qt has this behaviour.

      The issue is that some bluetooth peripherals don't allow to read some characteristics or same descriptors even if they are marked as readable.

      I know that it sounds like a peripheral bug, but there are a lot of firmware written in this way and we can't change them.

      Infact, nrfconnect app (that i guess has more bluetooth experience that Qt had ), doesn't read all the chars and descriptors during the discovery process, so i guess Qt should do the same.

      Looking at the code on Android, i guess the responsible of this behavior is this function: scheduleServiceDetailDiscovery.

      So the question is: could i safely remove this one? I mean, the side effect of removing it should be that I will not have the values of the charts and the descriptors in the very beginning phase, but of course I could always read them after the init phase.

      If you want I could provide a hci snoof of a buggy peripheral.

      Thanks in advance.

      Roberto Viola
      Software engineer and open source enthusiast
      http://robertoviola.cloud

      _______________________________________________
      Interest mailing list
      Interest@qt-project.org
      https://lists.qt-project.org/listinfo/interest

      Attachments

        No reviews matched the request. Check your Options in the drop-down menu of this sections header.

        Activity

          People

            andreasbuhr Andreas Buhr
            andreasbuhr Andreas Buhr
            Maurice Kalinowski Maurice Kalinowski
            Alex Blasche Alex Blasche
            Votes:
            2 Vote for this issue
            Watchers:
            5 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved:

              Gerrit Reviews

                There are no open Gerrit changes