public override IObservable <GattCharacteristicResult> Read() => Observable.Create <GattCharacteristicResult>(ob =>
{
this.AssertRead();
var handler = new EventHandler <CBCharacteristicEventArgs>((sender, args) =>
{
if (!this.Equals(args.Characteristic))
{
return;
}
if (args.Error != null)
{
ob.OnError(new BleException(args.Error.Description));
}
else
{
var value = this.NativeCharacteristic.Value?.ToArray();
var result = new GattCharacteristicResult(this, value, GattCharacteristicResultType.Read);
ob.Respond(result);
}
});
this.Peripheral.UpdatedCharacterteristicValue += handler;
this.Peripheral.ReadValue(this.NativeCharacteristic);
return(() => this.Peripheral.UpdatedCharacterteristicValue -= handler);
});
public override IObservable <GattCharacteristicResult> Read() => this.context.Invoke(Observable.Create <GattCharacteristicResult>((Func <IObserver <GattCharacteristicResult>, IDisposable>)(ob =>
{
this.AssertRead();
var sub = this.context
.Callbacks
.CharacteristicRead
.Where(this.NativeEquals)
.Subscribe(args =>
{
if (!args.IsSuccessful)
{
ob.OnError(new BleException($"Failed to read characteristic - {args.Status}"));
}
else
{
var value = args.Characteristic.GetValue();
var result = new GattCharacteristicResult(this, value, GattCharacteristicResultType.Read);
ob.Respond(result);
}
});
this.context.InvokeOnMainThread(() =>
{
try
{
if (!this.context.Gatt?.ReadCharacteristic(this.native) ?? false)
{
throw new BleException("Failed to read characteristic");
}
}
catch (Exception ex)
{
ob.OnError(ex);
}
});
return(sub);
})));
public override IObservable <GattCharacteristicResult> WhenNotificationReceived() => Observable.Create <GattCharacteristicResult>(async ob =>
{
var handler = new TypedEventHandler <Native, GattValueChangedEventArgs>((sender, args) =>
{
if (sender.Equals(this.Native))
{
var bytes = args.CharacteristicValue.ToArray();
var result = new GattCharacteristicResult(this, bytes, GattCharacteristicResultType.Notification);
ob.OnNext(result);
}
});
this.Native.ValueChanged += handler;
this.handlers.Add(handler);
this.context.SetNotifyCharacteristic(this);
this.IsNotifying = true;
return(() =>
{
this.Native.ValueChanged -= handler;
this.handlers.Remove(handler);
});
});
