wiegand
Decoder for wiegand readers on GPIO. Currently works on linux only, but can be tested on other platforms.
requirements
- Linux with GPIO
- node-gyp
installation
$ npm install --save wiegand
running
Make sure you export your GPIO pins according to the epoll docs:
#!/bin/sh echo 17 > /sys/class/gpio/exportecho in > /sys/class/gpio/gpio17/directionecho both > /sys/class/gpio/gpio17/edge
Note: If you are using the GPIO command to export, it does not automatically set the edge for you. You must do it separately:
$ gpio export 17 in$ echo both > /sys/class/gpio/gpio17/edge
usage
const wiegand = ; const w = ; w; w; w; w;
api
class: Wiegand
inherits EventEmitter
method: begin([options], [callback])
default options:
// RaspberryPI default d0: 17 d1: 18
callback
will fire on the ready
event or if an error happens during the process. Errors will be emited on the error
event.
method: stop([callback])
stop polling for changes to GPIO. Will callback when done and emit a stop
event.