implemented port guessing and auto upload

uses the ino utility to auto upload to the arduino

nodejs/routes/index.js

@@ -1,24 +1,40 @@
 var express = require('express');
 var router = express.Router();
-var sucess = true;
+var child = require("child_process");
-var SerialPort = require("serialport").SerialPort
-serialPort = new SerialPort("/dev/ttyACM0", {
-  baudrate: 9600
-}, false);
 
-serialPort.open(function (error) {
+var SerialPort = require("serialport").SerialPort
+var success;
+child.exec('cd ../arduino && ino build && ino upload', function(err, stdout, stderr){
+    
+  if(err){console.log('Please install the ino utility and connect arduino!\nIf there are other open programs that communicate with the arduino, close them!'); return success = false;}
+
+  var buff = stdout.slice(stdout.indexOf('Guessing serial port ... ')+25);
+  buff = buff.slice(0, buff.indexOf('\n'));
+  console.log('Guessing serial port ... ' + buff);
+
+  serialPort = new SerialPort(buff, {
+    baudrate: 9600
+  }, false);
+    
+  serialPort.open(function (error) {
     if ( error ) {
-    sucess = false;
+      console.log('Please check arduino!')
+      return successfalse;
     } 
+  });
+
+  return success = true;    
 });
 
+//console.log(success);
+
 /* GET home page. */ 
 router.get('/', function(req, res, next) {
   res.render('index', { title: 'Express' });
 });
 
 router.get('/toggleLight', function (req, res) {
-  if(sucess) { serialPort.write(new Buffer('~','ascii')); } else {console.log("arduino not connected")}
+  if(success) { serialPort.write(new Buffer('~','ascii')); } else {console.log("arduino not connected")}
   res.send('switch light');
 });