protected override bool UpdateConnectionIntervalNative(ConnectionInterval interval)
{
if (_gatt == null || _gattCallback == null)
{
Trace.Message("You can't update a connection interval for disconnected devices. Device is {0}", State);
return(false);
}
if (Build.VERSION.SdkInt < BuildVersionCodes.Lollipop)
{
Trace.Message($"Update connection interval paramter in this Android API level");
return(false);
}
try
{
// map to android gattConnectionPriorities
// https://developer.android.com/reference/android/bluetooth/BluetoothGatt.html#CONNECTION_PRIORITY_BALANCED
return(_gatt.RequestConnectionPriority((GattConnectionPriority)(int)interval));
}
catch (Exception ex)
{
throw new Exception($"Update Connection Interval fails with error. {ex.Message}");
}
}
public override void OnConnectionStateChange(BluetoothGatt gatt, GattStatus status, ProfileState newState)
{
Console.WriteLine("OnConnectionStateChange: ");
base.OnConnectionStateChange(gatt, status, newState);
//TODO: need to pull the cached RSSI in here, or read it (requires the callback)
Device device = new Device(gatt.Device, gatt, this, 0);
switch (newState)
{
// disconnected
case ProfileState.Disconnected:
Console.WriteLine("disconnected");
if (Build.VERSION.SdkInt >= BuildVersionCodes.Lollipop)
{
Console.WriteLine("Changing connection priority to balanced");
gatt.RequestConnectionPriority(BluetoothGatt.ConnectionPriorityBalanced);
}
this.DeviceDisconnected(this, new DeviceConnectionEventArgs()
{
Device = device
});
break;
// connecting
case ProfileState.Connecting:
Console.WriteLine("Connecting");
break;
// connected
case ProfileState.Connected:
Console.WriteLine("Connected");
if (Build.VERSION.SdkInt >= BuildVersionCodes.Lollipop)
{
Console.WriteLine("Changing connection priority to high");
gatt.RequestConnectionPriority(BluetoothGatt.ConnectionPriorityHigh);
}
this.DeviceConnected(this, new DeviceConnectionEventArgs()
{
Device = device
});
break;
// disconnecting
case ProfileState.Disconnecting:
Console.WriteLine("Disconnecting");
break;
}
}
public void ConnectGatt(BluetoothDevice device)
{
if (device == null)
{
if (Gatt != null)
{
Gatt.Close();
Gatt = null;
}
return;
}
Gatt = device.ConnectGatt(this, false, new DT1WatchDogGattCallback(this));
Gatt.RequestConnectionPriority(GattConnectionPriority.High);
}
public void SetConnectionPriority(ConnectionPriority connectionPriority)
{
_gatt?.RequestConnectionPriority(connectionPriority.ToGattConnectionPriority());
}