//1.开始串口连接
private void startSerialPortConnect() {
	//配置串口参数
    serialPortUtil = new SerialPortUtil(this,
            new SerialPortConfig("/dev/ttyMT1", 115200), //串口0
            new SerialPortConfig("/dev/ttyMT2", 38400) //串口1

    );
    //设置为调试模式，打印收发数据
    serialPortUtil.setDebug(true);
    //绑定串口服务
    serialPortUtil.bindService();

    //串口0数据读取监听（可在不同Activity中同时设置监听）
    serial0Read = new SerialRead(this);
    serial0Read.registerListener(0/*默认为0，此参数可省略*/, new Serial0ReadListener());
    //串口1数据读取监听（可在不同Activity中同时设置监听）
    serial1Read = new SerialRead(this);
    serial1Read.registerListener(1, new Serial1ReadListener());
}

//2.设置串口读取监听
private class Serial0ReadListener implements SerialRead.ReadDataListener {
    @Override
    public void onReadData(byte[] data) {
       
    }
}

//3.串口发送数据
SerialWrite.sendData(Context context, int port, byte[] data)；
//如：串口0发送数据
SerialWrite.sendData(this, 0/*默认为0，此参数可省略*/, content.getBytes("GBK"));
//如：串口1发送数据
SerialWrite.sendData(this, 1, content.getBytes("GBK"));

//4.停止串口连接
private void stopSerialPortConnect() {
    serial0Read.unRegisterListener();
    serial1Read.unRegisterListener();
    serialPortUtil.unBindService();
}

//5.获取设备所有的串口信息
SerialPortFinder serialPortFinder = new SerialPortFinder();
String[] devices = serialPortFinder.getAllDevicesPath();