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