rc522-rfid-promise

#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);
});
``