node-rc522

Module to access an rfid reader with rc522 chipset connected to a raspberry pi. Using promises.

Fork of

This is a fork with added functionality. For a nice and simpler module please see the original
https://www.npmjs.com/package/rc522-rfid

Purpose

This node module is to access RFID reader with a rc522 chipset (e.g. http://amzn.com/B00GYR1KJ8) via SPI interface of the raspberry pi.

Functionality

The module is currently only able to read the serial number of the tag which is hold onto the reader.

Requirements

- The RFID reader is plugged onto the raspberry pi like it is described over here http://geraintw.blogspot.de/2014/01/rfid-and-raspberry-pi.html
- The GCC compiler is installed ``sudo apt-get install build-essential`



- node-gyp is installed

`npm install -g node-gyp`





Installation

First of all we have to install the C library for Broadcom BCM 2835 as it describe

here
``



wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.35.tar.gz

tar -zxf bcm2835-1.35.tar.gz

cd bcm2835-1.35

./configure

sudo make install



Then we can install the rc522 rfid nodejs module



npm install --save rc522-rfid-promise

Api



startListening(timeout)

// timeout is optional

// returns a promise



stopListening()

// closes the child process and rejects the promise if still unresolved





Usage



var rc522 = require("rc522-rfid-promise");



rc522.startListening(5000)

	.then(function(rfidTag){

    	console.log(rfidTag);

	});