/// <summary>
/// Attempts to connect if not already connected
/// </summary>
/// <param name="peripheral"></param>
/// <param name="config"></param>
/// <returns></returns>
public static IObservable <IPeripheral> WithConnectIf(this IPeripheral peripheral, ConnectionConfig?config = null) => Observable.Create <IPeripheral>(ob =>
{
if (peripheral.IsConnected())
{
ob.Respond(peripheral);
return(Disposable.Empty);
}
var sub1 = peripheral
.WhenConnected()
.Take(1)
.Subscribe(_ => ob.Respond(peripheral));
var sub2 = peripheral
.WhenConnectionFailed()
.Subscribe(ob.OnError);
peripheral.Connect(config);
return(Disposable.Create(() =>
{
sub1.Dispose();
sub2.Dispose();
if (peripheral.Status != ConnectionState.Connected)
{
peripheral.CancelConnection();
}
}));
});
public void ConnectPrinter(IPeripheral selectedPeripheral)
{
if (!selectedPeripheral.IsConnected())
{
selectedPeripheral.Connect();
}
_perifDisposable = selectedPeripheral.WhenAnyCharacteristicDiscovered().Subscribe((characteristic) =>
{
if (characteristic.CanWrite() && !characteristic.CanRead() && !characteristic.CanNotify())
{
_savedCharacteristic = characteristic;
IsReady = true;
_perifDisposable.Dispose();
}
});
}
void ConnectPrinter(IPeripheral selectedPeripheral)
{
if (!selectedPeripheral.IsConnected())
{
selectedPeripheral.Connect();
}
_perifDisposable = selectedPeripheral.WhenAnyCharacteristicDiscovered().Subscribe((characteristic) =>
{
//System.Diagnostics.Debug.WriteLine(characteristic.Description); //this is not suppported at this momment, and no neccesary I guess
if (characteristic.CanWrite() && !characteristic.CanRead() && !characteristic.CanNotify())
{
IsReadyToPrint = true;
_savedCharacteristic = characteristic;
System.Diagnostics.Debug.WriteLine($"Writing {characteristic.Uuid} - {characteristic.CanRead()} - {characteristic.CanIndicate()} - {characteristic.CanNotify()}");
_perifDisposable.Dispose();
}
});
}
public static bool IsDisconnected(this IPeripheral peripheral) => !peripheral.IsConnected();
/// <summary> /// Continuously reads RSSI from a connected peripheral /// WARNING: you really don't want to run this with an Android GATT connection /// </summary> /// <param name="peripheral">The peripheral to read RSSI</param> /// <param name="readInterval">The interval to poll the RSSI - defaults to 1 second if not set</param> /// <returns>RSSI value every read interval</returns> public static IObservable <int> ReadRssiContinuously(this IPeripheral peripheral, TimeSpan?readInterval = null) => Observable .Interval(readInterval ?? TimeSpan.FromSeconds(1)) .Where(_ => peripheral.IsConnected()) .Select(_ => peripheral.ReadRssi()) .Switch();