public void ShutDown()
{
if (ControlPort != null)
{
ControlPort.Close();
ControlPort = null;
}
if (PhotoPort != null)
{
PhotoPort.Close();
PhotoPort = null;
}
if (VideoPort != null)
{
VideoPort.Close();
VideoPort = null;
}
if (HeartPort != null)
{
HeartPort.Close();
HeartPort = null;
}
}
