bot-io/example/pwm.js

ADC, GPIO, PWM, UARTs, and more on the BeagleBone Black.

'use strict';

var bot = require('../'),
  led = new bot.Pwm(bot.pins.p9_42);

led.once('ready', function () {
  var period = led.period(),
    duty = 0,
    delta = period / 50;

  (function updateDuty() {
    led.duty(duty);

    duty += delta;

    if (duty < 0 || duty > period) {
      delta = -delta;
      duty += delta;
    }

    setTimeout(updateDuty, 10);
  }());
});