upm/examples/javascript/ht9170.js

/*jslint node:true, vars:true, bitwise:true, unparam:true */
/*jshint unused:true */
/*
* Author: Zion Orent <zorent@ics.com>
* Copyright (c) 2015 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var ht9170_dtmf_lib = require("jsupm_ht9170");

// Instantiate a DTMF decoder
var dtmf_obj = new ht9170_dtmf_lib.HT9170(12, 11, 10, 9, 8);

// Now we just spin in a loop, sleeping every 100ms, checking to see
// if a digit is available.  If so, we decode and print the digit,
// and continue looping.
var myInterval = setInterval(function()
{
	if (dtmf_obj.digitReady())
	{
		console.log("Got DTMF code: " + dtmf_obj.decodeDigit());
		// now spin until digitReady() goes false again
		while (dtmf.digitReady())
			;
	}
}, 100);

// When exiting: clear interval, and print message
process.on('SIGINT', function()
{
  clearInterval(myInterval);
	dtmf_obj = null;
	ht9170_dtmf_lib.cleanUp();
	ht9170_dtmf_lib = null;
	console.log("Exiting");
	process.exit(0);
});