var express = require('express');
var router = express.Router();
var SerialPort = require("serialport").SerialPort
var serialPort = new SerialPort("/dev/ttyACM0", {
baudrate: 9600
});
/* GET home page. */
router.get('/', function(req, res, next) {
res.render('index', { title: 'Express' });
router.get('/toggleLight', function (req, res) {
serialPort.write(new Buffer('~','ascii'));
res.send('switch light');
module.exports = router;