go 语言如何获取串口数据？

原来刚用golang的时候，觉得python的twisted库挺好，模仿写了一个，里面有一段监听串口的：

func (p *_reactor) ListenSerial(dev string, client SerialClient, baud int) (rw io.ReadWriteCloser, err error) {
	p.initReactor()
	p.serial_listeners[dev] = client
	fmt.Printf("listening on %s with (%d) Bund\n", dev, baud)
	var s *serial.SerialPort
	s, err = serial.OpenPort(dev, &serial.Mode{
		BaudRate: baud,
		DataBits: 8,
		Parity:   serial.PARITY_NONE,
		StopBits: serial.STOPBITS_ONE,
	})
	if err == nil {
		p.serial_conn[dev] = s
	}
	return s, err
}