static public void Start()
 {
     FlashManager.Start();
     DeviceManager.Start();
     TCPIPDeviceEnumeration.Start();
     SerialDeviceEnumeration.Start();
 }
 static public void Stop()
 {
     try {
         SerialDeviceEnumeration.Stop();
         TCPIPDeviceEnumeration.Stop();
         DeviceManager.Stop();
         FlashManager.Stop();
     } catch (Exception) { }
 }