private static void StopMarkAndReset(ILaser laser, IRtc rtc)
{
Console.WriteLine("Trying to abort ...");
//abort to mark
rtc.CtlAbort();
//wait for rtc busy off
rtc.CtlBusyWait();
//wait for thread has finished
Program.thread?.Join();
Program.thread = null;
//reset rtc's status
rtc.CtlReset();
}