BlueZ: Implements characteristicChanged() notifications

This feature depends on ClientCharacteristicConfiguration descriptor
types which determine whether changed signals are sent or not.

The patch also ensures that cached char values are not
updated/cached when the char is not readable.

Task-number: QTBUG-46819
Change-Id: I841bcaaca60c588eae7d4067b6ead6af28f957e3
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/bluetooth/qlowenergycontroller_bluezdbus_p.h b/src/bluetooth/qlowenergycontroller_bluezdbus_p.h
index 7195bfbf..7ac1808f 100644
--- a/src/bluetooth/qlowenergycontroller_bluezdbus_p.h
+++ b/src/bluetooth/qlowenergycontroller_bluezdbus_p.h
@@ -126,6 +126,9 @@ private:
 private slots:
     void devicePropertiesChanged(const QString &interface, const QVariantMap &changedProperties,
                            const QStringList &/*invalidatedProperties*/);
+    void characteristicPropertiesChanged(QLowEnergyHandle charHandle, const QString &interface,
+                                    const QVariantMap &changedProperties,
+                                    const QStringList &invalidatedProperties);
     void interfacesRemoved(const QDBusObjectPath &objectPath, const QStringList &interfaces);
 
     void onCharReadFinished(QDBusPendingCallWatcher *call);
@@ -145,6 +148,7 @@ private:
     struct GattCharacteristic
     {
         QSharedPointer<OrgBluezGattCharacteristic1Interface> characteristic;
+        QSharedPointer<OrgFreedesktopDBusPropertiesInterface> charMonitor;
         QVector<QSharedPointer<OrgBluezGattDescriptor1Interface>> descriptors;
     };