serialcli.py 文件源码

def write(self, data):
        """Output the given string over the serial port."""
        if not self._port_handle: raise portNotOpenError
        if not isinstance(data, (bytes, bytearray)):
            raise TypeError('expected %s or bytearray, got %s' % (bytes, type(data)))
        try:
            # must call overloaded method with byte array argument
            # as this is the only one not applying encodings
            self._port_handle.Write(as_byte_array(data), 0, len(data))
        except System.TimeoutException, e:
            raise writeTimeoutError
        return len(data)