CODEWITHSUNDEEP
node.jsserial-port
user2336629
user2336629

Reputation: 37

error on creating new object from serialport node.js

I've check such kind of issue. but i don't find any. if you found it. just let me know. I just getting started write javascript through node.js, and serialport. cand someone explain me why this error appear?

/Applications/MAMP/htdocs/homeautomation/server.js:42
var sp = new serialPort(portName, {
         ^
TypeError: undefined is not a function
    at Object.<anonymous> (/Applications/MAMP/htdocs/homeautomation/server.js:42:10)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:901:3

this is my starting code

/*
 * dependencies
 */
var express = require('express'),
    server = require('http').createServer(app),
    io = require('socket.io').listen(server),
    serialPort = require('serialport').serialPort;

server.listen(3000);
console.log('listen on port 3000')

/*
 * Express
 */

var app = express();

// serve static files from index
app.configure(function(){
    app.use(express.static(__dirname + '/'));
});


// respon to web GET request on index.html
app.get('/', function (req, res){
    res.sendfile(__dirname + '/index.html');
});


/*
 * Serial Port Setup
 */

var portName = '/dev/tty.usb.serial-A501JUTF';
//var portName = '/dev/tty.usbmodem1421';
var readData = ''; //Array to hold the values read from the port

var sp = new serialPort(portName, {
    baudRate : 9600,
    dataBits : 8,
    parity : 'none',
    stopBits: 1,
    flowControl : false,
});

any help will be appreciated.

Upvotes: 2

Views: 5408

Answers (2)

Abubakar Saleh Usman
Abubakar Saleh Usman

Reputation: 3

Try this. It works perfectly. 

var SerialPort = require('serialport');
var serialPort = SerialPort.serialPort;
var sp = new SerialPort("/dev/ttyACM0", { 
});

Upvotes: 0

Paul Mougel
Paul Mougel

Reputation: 17048

Your code is correct, except that you used the serialPort object of the require('serialport') library, when it's in fact SerialPort that you need to use, hence the undefined is not a function error that you encountered.

var SerialPort = require("serialport")
console.log(SerialPort.serialPort); // undefined
console.log(SerialPort.SerialPort); // { [Function: SerialPort, ... }

See the documentation for a sample usage.

Upvotes: 2

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