node-rc522 v16.0.4

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);
	});