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  1. Qt
  2. QTBUG-59917

QLowEnergyService HID Details (BluetoothGatt: Unhandled exception in callback)

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 5.9.0 Beta 3
    • 5.8.0
    • None
    • Qt 5.8
      Android 6.0.1

    Description

      I'm developing new BT LE Examples using QtQuickControls 2 and all the new BT LE stuff from 5.7/5.8
      Will provide soon at Github Example with Scanner and Heartrate

      While developing the BT LE Scanner I had a problem with a BTLE Waiter Lock (Magnetic Key put in sends ID, pull out sends message)
      This Device also contains a HID Service. Trying to get the details I run into a Stacktrace calling QLowEnergyService.discoverDetails()

      W QtBluetoothGatt: Performing queued job, handle: 22 Read (false) ValueKnown: false Skipping: false Characteristic
      W QtBluetoothGatt: Performing queued job, handle: 23 Read (false) ValueKnown: false Skipping: true CharacteristicValue
      W QtBluetoothGatt: Performing queued job, handle: 24 Read (false) ValueKnown: false Skipping: false Descriptor
      W BluetoothGatt: Unhandled exception in callback
      W BluetoothGatt: java.lang.SecurityException: Need BLUETOOTH_PRIVILEGED permission: Neither user 10135 nor current process has android.permission.BLUETOOTH_PRIVILEGED.
      W BluetoothGatt: 	at android.os.Parcel.readException(Parcel.java:1620)
      W BluetoothGatt: 	at android.os.Parcel.readException(Parcel.java:1573)
      W BluetoothGatt: 	at android.bluetooth.IBluetoothGatt$Stub$Proxy.readCharacteristic(IBluetoothGatt.java:992)
      W BluetoothGatt: 	at android.bluetooth.BluetoothGatt.readCharacteristic(BluetoothGatt.java:900)
      W BluetoothGatt: 	at org.qtproject.qt5.android.bluetooth.QtBluetoothLE.executeReadJob(QtBluetoothLE.java:1221)
      W BluetoothGatt: 	at org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO(QtBluetoothLE.java:1066)
      W BluetoothGatt: 	at org.qtproject.qt5.android.bluetooth.QtBluetoothLE.access$800(QtBluetoothLE.java:63)
      W BluetoothGatt: 	at org.qtproject.qt5.android.bluetooth.QtBluetoothLE$2.onDescriptorRead(QtBluetoothLE.java:410)
      W BluetoothGatt: 	at android.bluetooth.BluetoothGatt$1.onDescriptorRead(BluetoothGatt.java:494)
      W BluetoothGatt: 	at android.bluetooth.IBluetoothGattCallback$Stub.onTransact(IBluetoothGattCallback.java:330)
      W BluetoothGatt: 	at android.os.Binder.execTransact(Binder.java:453)
      

      state is hanging on:

      QLowEnergyService::ServiceState(DiscoveringServices)
      

      my workaround: trying to get details for serviceUuid "0x1812" user gets message that HID Service isn't supported yet by my App

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            ablasche Alex Blasche
            ekkescorner Ekkehard
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              Created:
              Updated:
              Resolved: