bot-io/test/pwm7.js

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

'use strict';

var bot = require('../'),
  pwms = [
    new bot.Pwm(bot.pins.p8_13),
    new bot.Pwm(bot.pins.p8_19),
    new bot.Pwm(bot.pins.p9_14),
    new bot.Pwm(bot.pins.p9_16),
    new bot.Pwm(bot.pins.p9_21),
    new bot.Pwm(bot.pins.p9_22),
    new bot.Pwm(bot.pins.p9_42)
  ];

pwms.forEach(function (pwm) {
  pwm.once('ready', function () {
    var period = pwm.period(),
      duty = 0,
      inc = period / 1000;

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

      duty += inc;
      if (duty <= period) {
        setTimeout(updateDuty, 1);
      }
    }());
  });
});