"use strict";

const Gpio = require('../onoff').Gpio; // Gpio class
const led = new Gpio(17, 'out');       // Export GPIO17 as an output

// Toggle the state of the LED connected to GPIO17 every 200ms 'count' times.
// Here asynchronous methods are used. Synchronous methods are also available.
(function blink(count) {
  if (count <= 0) {
    return led.unexport();
  }

  led.read(function (err, value) { // Asynchronous read
    if (err) {
      throw err;
    }

    led.write(value ^ 1, function (err) { // Asynchronous write
      if (err) {
        throw err;
      }
    });
  });

  setTimeout(function () {
    blink(count - 1);
  }, 200);
}(25));