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d04f93ffca
Signed-off-by: Zion Orent <zorent@ics.com> Signed-off-by: Jon Trulson <jtrulson@ics.com> Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
79 lines
2.5 KiB
JavaScript
79 lines
2.5 KiB
JavaScript
/*jslint node:true, vars:true, bitwise:true, unparam:true */
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/*jshint unused:true */
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/*
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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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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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var CO2_lib = require('jsupm_mhz16');
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// Instantiate a MHZ16 serial CO2 sensor on uart 0.
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// This example was tested on the Grove CO2 sensor module.
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var myCO2_obj = new CO2_lib.MHZ16(0);
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// make sure port is initialized properly. 9600 baud is the default.
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if (!myCO2_obj.setupTty(CO2_lib.int_B9600))
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{
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console.log("Failed to setup tty port parameters");
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process.exit(0);
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}
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outputStr = "Make sure that the sensor has had " +
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"at least 3 minutes to warm up";
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console.log(outputStr);
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outputStr = "or you will not get valid results.";
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console.log(outputStr);
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outputStr = "The temperature reported is not the ambient temperature,";
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console.log(outputStr);
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outputStr = "but rather the temperature of the sensor elements.";
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console.log(outputStr);
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function writeCO2data()
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{
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if (!myCO2_obj.getData())
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console.log("Failed to retrieve data");
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else
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{
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outputStr = "CO2 concentration: " + myCO2_obj.getGas() +
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" PPM, " +
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"Temperature (in C): " + myCO2_obj.getTemperature();
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console.log(outputStr);
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}
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}
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var myInterval;
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setTimeout(function()
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{
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myInterval = setInterval(writeCO2data, 2000);
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}, 1000);
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// Print message, clear memory when exiting
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process.on('SIGINT', function()
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{
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clearInterval(myInterval);
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myCO2_obj = null;
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CO2_lib.cleanUp();
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CO2_lib = null;
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console.log("Exiting");
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process.exit(0);
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});
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