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      1 /*jslint node:true, vars:true, bitwise:true, unparam:true */
      2 /*jshint unused:true */
      3 /*global */
      4 /*
      5  * Author: Zion Orent <zorent (at) ics.com>
      6  * Copyright (c) 2014 Intel Corporation.
      7  *
      8  * Permission is hereby granted, free of charge, to any person obtaining
      9  * a copy of this software and associated documentation files (the
     10  * "Software"), to deal in the Software without restriction, including
     11  * without limitation the rights to use, copy, modify, merge, publish,
     12  * distribute, sublicense, and/or sell copies of the Software, and to
     13  * permit persons to whom the Software is furnished to do so, subject to
     14  * the following conditions:
     15  *
     16  * The above copyright notice and this permission notice shall be
     17  * included in all copies or substantial portions of the Software.
     18  *
     19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     20  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     22  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     23  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     24  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     25  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     26  */
     27 
     28 var upmBuzzer = require("jsupm_buzzer");
     29 // Initialize on GPIO 5
     30 var myBuzzer = new upmBuzzer.Buzzer(5);
     31 var chords = [];
     32 chords.push(upmBuzzer.DO);
     33 chords.push(upmBuzzer.RE);
     34 chords.push(upmBuzzer.MI);
     35 chords.push(upmBuzzer.FA);
     36 chords.push(upmBuzzer.SOL);
     37 chords.push(upmBuzzer.LA);
     38 chords.push(upmBuzzer.SI);
     39 chords.push(upmBuzzer.DO);
     40 chords.push(upmBuzzer.SI);
     41 var chordIndex = 0;
     42 
     43 // Print sensor name
     44 console.log(myBuzzer.name());
     45 
     46 function melody()
     47 {
     48     if (chords.length != 0)
     49     {
     50         //Play sound for one second
     51         console.log( myBuzzer.playSound(chords[chordIndex], 1000000) );
     52         chordIndex++;
     53         //Reset the sound to start from the beginning.
     54         if (chordIndex > chords.length - 1)
     55 			chordIndex = 0;
     56     }
     57 }
     58 setInterval(melody, 100);
     59 
     60 // Print message when exiting
     61 process.on('SIGINT', function()
     62 {
     63 	console.log("Exiting...");
     64 	process.exit(0);
     65 });
     66