node server talking to arduino

node/nodeServer.js

+/**
+ * Created by aghassaei on 6/17/15.
+ */
+
+
+var serialport = require('serialport');
+SerialPort = serialport.SerialPort;// make a local instance of it
+
+// list serial ports:
+serialport.list(function (err, ports) {
+    ports.forEach(function(port) {
+        console.log(port.comName);
+    });
+    var portName = ports[4].comName;
+    console.log("opening port " + portName);
+    var myPort = new SerialPort(portName, {
+       baudRate: 9600,
+       // look for return and newline at the end of each data packet:
+       parser: serialport.parsers.readline("\r\n")
+    });
+
+    myPort.on('open', onPortOpen);
+    myPort.on('data', onPortData);
+    myPort.on('close', onPortClose);
+    myPort.on('error', onPortError);
+});
+
+function onPortOpen(){
+    console.log("port open");
+}
+
+function onPortData(data){
+    console.log(data);
+}
+
+function onPortClose(){
+    console.log("port close");
+}
+
+function onPortError(error){
+    console.log("Serial port error " + error);
+}
+
+