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  1. Qt
  2. QTBUG-73791

QBluetoothDeviceDiscoveryAgent - only discovery "active" LE devices, should not discover

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Details

    • Suggestion
    • Resolution: Invalid
    • Not Evaluated
    • None
    • 5.11.3
    • Connectivity: Bluetooth
    • None
    • Linux/Other display system

    Description

      Hi,

      Once I have paired devices, the QBluetoothDeviceDiscoveryAgent always discovers these paired devices, although they are not powered and thus not sending advertisements.

      So far I didn't find a method to find out if a BLE device discovered by the QBluetoothDeviceDiscoveryAgent is really present or not. I thought I could use the rSSi property but this seems to be cached. Using the connectToDevice function via the QLowEnergyController seems to be resource consuming/blocking   and not very effective, also after a number of tryouts the Unkown error occurs and things start to go really wrong. 

      BTW is there a way to not cache data from remote devices? So far I didn't find anything useful on the internet....

      Thanks for any help in advance!

      Best regards,

      Frank 

       

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-69747 Reading RSSI value of connected Bluetooth Low Energy device

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; Flaky tests; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
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              ablasche Alex Blasche
              frv Frank Vieren
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                Resolved:

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