private void SubscribeCharacteristic(BluetoothGattCharacteristic characteristic)
{
_gatt.SetCharacteristicNotification(characteristic, true);
var descriptor = characteristic.GetDescriptor(UUID.FromString("00002902-0000-1000-8000-00805f9b34fb"));
descriptor.SetValue(BluetoothGattDescriptor.EnableNotificationValue.ToArray());
_gatt.WriteDescriptor(descriptor);
}
Task <GattDescriptor> PlatformGetDescriptor(BluetoothUuid descriptor)
{
var gattDescriptor = _characteristic.GetDescriptor(descriptor);
if (gattDescriptor is null)
{
return(Task.FromResult <GattDescriptor>(null));
}
return(Task.FromResult(new GattDescriptor(this, gattDescriptor)));
}
/**
* Enables or disables notification on a give characteristic.
*
* @param characteristic Characteristic to act on.
* @param enabled If true, enable notification. False otherwise.
*/
public void SetCharacteristicNotification (BluetoothGattCharacteristic characteristic, bool enabled)
{
if (mBluetoothAdapter == null || mBluetoothGatt == null) {
Log.Warn (TAG, "BluetoothAdapter not initialized");
return;
}
mBluetoothGatt.SetCharacteristicNotification (characteristic, enabled);
// This is specific to Heart Rate Measurement.
if (UUID_HEART_RATE_MEASUREMENT == characteristic.Uuid) {
BluetoothGattDescriptor descriptor = characteristic.GetDescriptor (
UUID.FromString (SampleGattAttributes.CLIENT_CHARACTERISTIC_CONFIG));
descriptor.SetValue (BluetoothGattDescriptor.EnableNotificationValue.ToArray ());
mBluetoothGatt.WriteDescriptor (descriptor);
}
}
