README

rc522-rfid

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);
    });

Usage no npm install needed!