public void WriteBytesBlocking()
{
DGSerial serial1 = new DGSerial(_portName1, _baudRate1);
Thread thread = new Thread(new ThreadStart(WriteBytesBlocking_ReadThread));
serial1.Open();
byte[] buffertx = new byte[serial1.Get().WriteBufferSize];
Stopwatch watch = Stopwatch.StartNew();
thread.Start();
serial1.WriteBytesBlocking(buffertx);
watch.Stop();
Assert.That(watch.ElapsedMilliseconds, Is.AtLeast(1999));
serial1.Close();
}