misza222

var fs = require('fs');

var button_gpio = 17; // maps to digital PIN5 on the board
var led_gpio    = 27; // maps to digital PIN7

var fileOptions = {encoding: 'ascii'};

var exportGpio = function(gpio_nr) {
  fs.writeFile('/sys/class/gpio/export', gpio_nr, fileOptions, function (err) {
    if (err) { console.log("Couldn't export %d, probably already exported.", gpio_nr); }