NodeJS Arduino

arduinoNodeJS.js

//Copyright (c) 2015 Gumpanat Keardkeawfa
//Licensed under the MIT license

//Add Lib
var srListPort = require("serialport"); //.SerialPort
var SerialPort = require("serialport").SerialPort 

//List port (you may not need this line)
srListPort.list(function (err, ports) {
  ports.forEach(function(port) {
    console.log(port.comName);
    console.log(port.pnpId);
    console.log(port.manufacturer);
  });
});

var arduinoport = "YOUR PORT HERE";
var serialPort = new SerialPort(arduinoport, {
	baudrate: 9600,
	// defaults for Arduino serial communication
	dataBits: 8, 
	parity: 'none', 
	stopBits: 1, 
	flowControl: false 
});

var i = 0;
var sendcmd = '';

//Async data recieve from Arduino
serialPort.on('data', function(data) { 
	console.log('received: '+data.toString());
	switch(data.toString()) {
		case 'hello':
			sendcmd = 'hello';
			break;
		case 'finish':
			process.exit(1);
			break;	
		default:
			i++;
			sendcmd = i;
		    break;
	}
	if (i > 5) {
		sendcmd = 'close';
	}
	serialPort.write(sendcmd + ';'); // use 'E' as end command character
	console.log('Send: '+sendcmd);
	sendcmd = '';
});