public void ReadBytesBlocking()
{
DGSerial serial2 = new DGSerial(_portName2, _baudRate2);
Thread thread = new Thread(new ThreadStart(ReadBytesBlocking_ReadThread));
serial2.Open();
Stopwatch watch = Stopwatch.StartNew();
thread.Start();
byte[] bufferrx = serial2.ReadBytesBlocking();
watch.Stop();
var wd = watch.ElapsedMilliseconds;
Assert.That(watch.ElapsedMilliseconds, Is.AtLeast(1999));
serial2.Close();
}