serialwin32.py 文件源码

def set_output_flow_control(self, enable=True):
        """\
        Manually control flow - when software flow control is enabled.
        This will do the same as if XON (true) or XOFF (false) are received
        from the other device and control the transmission accordingly.
        WARNING: this function is not portable to different platforms!
        """
        if not self.is_open:
            raise portNotOpenError
        if enable:
            win32.EscapeCommFunction(self._port_handle, win32.SETXON)
        else:
            win32.EscapeCommFunction(self._port_handle, win32.SETXOFF)