write_serial — Write to a serial connection.
write_serial writes the characters given in Data to the serial device given by SerialHandle. The data to be written is passed as a tuple of integers. This allows to write NUL characters, which would otherwise be interpreted as the end of a string. write_serial always waits until all data has been transmitted, i.e., a timeout for writing cannot be set.
Serial interface handle.
Characters to write (as tuple of integers).
If the parameters are correct and the write to the device was successful, the operator write_serial returns the value 2 (H_MSG_TRUE). Otherwise an exception is raised.