public override void OnCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic)
{
base.OnCharacteristicChanged(gatt, characteristic);
if (characteristic.Uuid.Equals(GattMapper.UuidForType <GlucoseMeasurement>()))
{
try
{
Consumer.Consume(characteristic);
Bluetooth_CMD.poll_queue();
}
catch (Exception)
{
throw;
}
}
}
internal static void process_queue_entry(Bluetooth_CMD btc)
{
if (GlucoseGattCallback.mBluetoothGatt == null)
{
Debug.WriteLine("Bluetooth Gatt not initialized");
return;
}
BluetoothGattService service = null;
BluetoothGattCharacteristic characteristic;
if (btc.service != null)
{
service = GlucoseGattCallback.mBluetoothGatt.GetService(btc.service);
}
if ((service != null) || (btc.service == null))
{
if ((service != null) && (btc.characteristic != null))
{
characteristic = service.GetCharacteristic(btc.characteristic);
}
else
{
characteristic = null;
}
if (characteristic != null)
{
switch (btc.cmd)
{
case "W":
characteristic.SetValue(btc.data);
if ((characteristic.GetValue().Length > 1))
{
GlucoseGattCallback.AwaitingAck = true;
GlucoseGattCallback.AwaitingData = true;
if (GlucoseGattCallback.Debug)
{
Debug.WriteLine("Setting await ack blocker 1");
}
}
Task.Run(() =>
{
try
{
if (!GlucoseGattCallback.mBluetoothGatt.WriteCharacteristic(characteristic))
{
Debug.WriteLine("Failed in write characteristic");
System.Threading.Thread.Sleep(150);
if (!GlucoseGattCallback.mBluetoothGatt.WriteCharacteristic(characteristic))
{
Debug.WriteLine("Failed second time in write charactersitic");
}
}
}
catch (NullPointerException e)
{
Debug.WriteLine(
"Got null pointer exception writing characteristic - probably temporary failure");
}
});
break;
case "R":
GlucoseGattCallback.mBluetoothGatt.ReadCharacteristic(characteristic);
break;
case "N":
GlucoseGattCallback.mBluetoothGatt.SetCharacteristicNotification(characteristic, true);
System.Threading.Thread.Sleep(100);
poll_queue(); // we don't get an event from this
break;
case "U":
GlucoseGattCallback.mBluetoothGatt.SetCharacteristicNotification(characteristic, false);
break;
case "D":
BluetoothGattDescriptor descriptor = characteristic.GetDescriptor(
GattMapper.UuidForType <ClientCharacteristicConfiguration>());
descriptor.SetValue(btc.data);
GlucoseGattCallback.mBluetoothGatt.WriteDescriptor(descriptor);
break;
default:
Debug.WriteLine("Unknown queue cmd: " + btc.cmd);
break;
} // end switch
}
else
{
Debug.WriteLine("Characteristic was null!!!!");
}
}
else
{
Debug.WriteLine("Got null service error on: " + btc.service);
}
}