PN532
Driver for the PN532 NFC chip. Provides an event and promise-based API, and requires either:
This implementation does not require libnfc, and should work on both X86 (32-bit or 64-bit) and ARM (RPi / Beaglebone) systems
Tested on a Mac OSX 10.9 system using a UART/FTDI cable to an Adafruit breakout board and on a BeagleBone using UART. I2C support is currently untested at the moment.
API is subject to change until the 1.0.0 release
Install
npm install pn532
Example
node-serialport)
UART (usingvar pn532 = require('pn532');
var SerialPort = require('serialport').SerialPort;
var serialPort = new SerialPort('/dev/tty.usbserial-AFWR836M', { baudrate: 115200 });
var rfid = new pn532.PN532(serialPort);
node-i2c)
I2C (usingvar pn532 = require('pn532');
var i2c = require('i2c');
var wire = new i2c(pn532.I2C_ADDRESS, {device: '/dev/i2c-1'});
var rfid = new pn532.PN532(wire);
Scan a tag
rfid.on('ready', function() {
rfid.scanTag().then(function(tag) {
console.log('tag:', tag.uid);
});
});
Poll for a tag
rfid.on('ready', function() {
console.log('Listening for a tag scan...');
rfid.on('tag', function(tag) {
console.log('tag:', tag.uid);
});
});
Retrieve the firmware version
rfid.on('ready', function() {
rfid.getFirmwareVersion().then(function(data) {
console.log('firmware: ', data);
});
});
ndef library)
Read and write tag data (usingTested using NTAG203 tags. Should support other NTAG and Mifare Ultralight tags. Mifare Classic tags are currently NOT supported, but should be in the future.
Read
rfid.on('ready', function() {
rfid.on('tag', function(tag) {
rfid.readNdefData().then(function(data) {
var records = ndef.decodeMessage(data.toJSON());
console.log(records);
});
});
});
Write
rfid.on('ready', function() {
rfid.scanTag().then(function(tag) {
var messages = [
ndef.uriRecord('http://www.google.com'),
ndef.textRecord('test')
];
var data = ndef.encodeMessage(messages);
rfid.writeNdefData(data).then(function(response) {
console.log('Write successful');
});
});
});
Examples
Working examples are available under the examples
directory. They should be ran with 6to5-node filename.js
, or replace:
var pn532 = require('../src/pn532');
with
var pn532 = require('../dist/pn532');
Debug logging
PN532_LOGGING=debug node dist/example.js