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38 lines
1011 B
JavaScript
38 lines
1011 B
JavaScript
/*
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* Author: Zion Orent <zorent@ics.com>
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* Copyright (c) 2015 Intel Corporation.
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*
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* This program and the accompanying materials are made available under the
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* terms of the The MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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*/
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var O2_lib = require("jsupm_o2");
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// The was tested with the O2 Oxygen Concentration Sensor Module
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// Instantiate a O2 on analog pin A0
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var O2_obj = new O2_lib.O2(0);
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var myInterval = setInterval(function()
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{
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console.log("The output voltage is: " + roundNum(O2_obj.voltageValue(), 5) + "mV");
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}, 100);
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function roundNum(num, decimalPlaces)
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{
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var extraNum = (1 / (Math.pow(10, decimalPlaces) * 1000));
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return (Math.round((num + extraNum) * (Math.pow(10, decimalPlaces))) / Math.pow(10, decimalPlaces));
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}
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// When exiting: clear interval, and print message
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process.on('SIGINT', function()
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{
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clearInterval(myInterval);
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O2_obj = null;
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O2_lib.cleanUp();
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O2_lib = null;
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console.log("Exiting...");
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process.exit(0);
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});
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