protected virtual bool EnableNotifications()
{
var descriptor = this.native.GetDescriptor(NotifyDescriptorId);
if (descriptor == null)
{
throw new ArgumentException("Characteristic Client Configuration Descriptor not found");
}
var success = this.context.Gatt.SetCharacteristicNotification(this.native, true);
Thread.Sleep(100);
if (success)
{
AndroidConfig.SyncPost(() =>
{
descriptor.SetValue(BluetoothGattDescriptor.EnableNotificationValue.ToArray());
success = this.context.Gatt.WriteDescriptor(descriptor);
if (success)
{
this.IsNotifying = true;
}
});
}
return(success);
}
public override IObservable <DescriptorResult> Write(byte[] data)
{
return(Observable.Create <DescriptorResult>(ob =>
{
var handler = new EventHandler <GattDescriptorEventArgs>((sender, args) =>
{
if (args.Descriptor.Equals(this.native))
{
if (!args.IsSuccessful)
{
ob.OnError(new ArgumentException($"Failed to write descriptor value - {this.Uuid} - {args.Status}"));
}
else
{
this.Value = data;
var result = new DescriptorResult(this, DescriptorEvent.Write, data);
ob.Respond(result);
this.WriteSubject.OnNext(result);
}
}
});
this.context.Callbacks.DescriptorWrite += handler;
AndroidConfig.SyncPost(() =>
{
this.native.SetValue(data);
this.context.Gatt.WriteDescriptor(this.native);
});
return () => this.context.Callbacks.DescriptorWrite -= handler;
}));
}
void RawWriteWithResponse(byte[] bytes)
{
AndroidConfig.SyncPost(() =>
{
this.native.SetValue(bytes);
this.native.WriteType = GattWriteType.Default;
this.context.Gatt.WriteCharacteristic(this.native);
});
}
void RawWriteNoResponse(IObserver <CharacteristicResult> ob, byte[] bytes)
{
var result = new CharacteristicResult(this, CharacteristicEvent.Write, bytes);
AndroidConfig.SyncPost(() =>
{
this.native.SetValue(bytes);
this.native.WriteType = GattWriteType.NoResponse;
this.context.Gatt.WriteCharacteristic(this.native);
this.Value = bytes;
});
this.WriteSubject.OnNext(result);
ob?.Respond(result);
}
protected virtual void DisableNotifications()
{
var descriptor = this.native.GetDescriptor(NotifyDescriptorId);
if (descriptor == null)
{
throw new ArgumentException("Characteristic Client Configuration Descriptor not found");
}
AndroidConfig.SyncPost(() =>
{
descriptor.SetValue(BluetoothGattDescriptor.DisableNotificationValue.ToArray());
this.context.Gatt.WriteDescriptor(descriptor);
this.context.Gatt.SetCharacteristicNotification(this.native, false);
this.IsNotifying = false;
});
}