public void CloseSerialPort()
 {
     if (NucleoPort != null)
     {
         NucleoPort.Close();
         NucleoPort = null;
     }
 }
 public void SendToNucleo(string data)
 {
     try
     {
         NucleoPort.WriteLine(data);
     }
     catch (Exception e)
     {
         Debug.WriteLine("Exception: " + e.Message);
     }
 }