1/*jslint node:true, vars:true, bitwise:true, unparam:true */
2/*jshint unused:true */
3
4/*
5* Author: Zion Orent <zorent@ics.com>
6* Copyright (c) 2015 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// analog voltage, usually 3.3 or 5.0
29var OTP538U_AREF = 5.0;
30
31var tempIRSensor_lib = require('jsupm_otp538u');
32
33// Instantiate a OTP538U on analog pins A0 and A1
34// A0 is used for the Ambient Temperature and A1 is used for the
35// Object temperature.
36var tempIRSensor_obj = new tempIRSensor_lib.OTP538U(0, 1, OTP538U_AREF);
37
38
39function checkTemp()
40{
41	var outputStr = "Ambient temp: " +
42		roundNum(tempIRSensor_obj.ambientTemperature(), 2) +
43		" C, Object temp: " +
44		roundNum(tempIRSensor_obj.objectTemperature(), 2) +
45		" C";
46	console.log(outputStr);
47}
48
49var myInterval = setInterval(checkTemp, 1000);
50
51function roundNum(num, decimalPlaces)
52{
53	var extraNum = (1 / (Math.pow(10, decimalPlaces) * 1000));
54	return (Math.round((num + extraNum) *
55		(Math.pow(10, decimalPlaces))) / Math.pow(10, decimalPlaces));
56}
57
58// When exiting: clear interval and print message
59process.on('SIGINT', function()
60{
61	clearInterval(myInterval);
62	console.log("Exiting...");
63	process.exit(0);
64});
65