use device UUID instead of hardware address for BT devices on iOS and…

… macOS

The hardware address is not exposed on iOS and macOS due to security/privacy considerations

bleuart.cpp

@@ -55,8 +55,18 @@ void BleUart::startConnect(QString addr)
     mUartServiceFound = false;
     mConnectDone = false;
 
+#if defined(Q_OS_MACOS) || defined(Q_OS_IOS)
+    // Create BT Controller from unique device UUID stored as addr. Creating
+    // a controller using a devices address is not supported on macOS or iOS.
+    QBluetoothDeviceInfo deviceInfo = QBluetoothDeviceInfo();
+    deviceInfo.setDeviceUuid(QBluetoothUuid(addr));
+    mControl = new QLowEnergyController(deviceInfo);
+
+#else
     mControl = new QLowEnergyController(QBluetoothAddress(addr));
 
+#endif
+
     mControl->setRemoteAddressType(QLowEnergyController::RandomAddress);
 
     connect(mControl, SIGNAL(serviceDiscovered(QBluetoothUuid)),
@@ -122,8 +132,15 @@ void BleUart::addDevice(const QBluetoothDeviceInfo &dev)
     if (dev.coreConfigurations() & QBluetoothDeviceInfo::LowEnergyCoreConfiguration) {
         qDebug() << "BLE scan found device:" << dev.name();
 
+#if defined(Q_OS_MACOS) || defined(Q_OS_IOS)
+        // macOS and iOS do not expose the hardware address of BLTE devices, must use
+        // the OS generated UUID.
+        mDevs.insert(dev.deviceUuid().toString(), dev.name());
+#else
         mDevs.insert(dev.address().toString(), dev.name());
 
+#endif
+
         emit scanDone(mDevs, false);
     }
 }