/// <summary>
 /// Switch mode to disconnected
 /// </summary>
 public void SwitchToDisconnected()
 {
     IsModeConnected = false;
     SerialHandler.ClosePort();
     SeriesCollection[0].Values.Clear();
     SerialHandler.IncomingData.Clear();
     Timestamp = "";
     if (SeriesCollection.Count == 1)
     {
         SeriesCollection.Add(
             new LineSeries
         {
             Title           = "Low",
             Values          = new ChartValues <ObservablePoint>(),
             LineSmoothness  = 0.1,
             StrokeThickness = 0.5
         });
         SeriesCollection.Add(
             new LineSeries
         {
             Title           = "High",
             Values          = new ChartValues <ObservablePoint>(),
             LineSmoothness  = 0.1,
             StrokeThickness = 0.5
         });
     }
     dataX = 0;
 }