gahrae

#!/usr/bin/env python
# Plays "silent night" on a piezo buzzer attached to pin 18 of the Onion Omega2
# Things required: python lite, pwm needs to be enabled via:
# omega2-ctrl gpiomux set pwm0 pwm

from time import sleep

exportStr="/sys/class/pwm/pwmchip0/export"
periodStr="/sys/class/pwm/pwmchip0/pwm%s/period"
dutyStr="/sys/class/pwm/pwmchip0/pwm%s/duty_cycle"

gahrae

// Derived from http://stackoverflow.com/a/8545403/106786
function decodeFloat(bytes, signBits, exponentBits, fractionBits, eMin, eMax, littleEndian) {
  var totalBits = (signBits + exponentBits + fractionBits);

  var binary = "";
  for (var i = 0, l = bytes.length; i < l; i++) {
    var bits = bytes[i].toString(2);
    while (bits.length < 8) 
      bits = "0" + bits;

gahrae

//     Int64.js
//
//     Copyright (c) 2012 Robert Kieffer
//     MIT License - http://opensource.org/licenses/mit-license.php

/**
 * Support for handling 64-bit int numbers in Javascript (node.js)
 *
 * JS Numbers are IEEE-754 binary double-precision floats, which limits the
 * range of values that can be represented with integer precision to: