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86 lines
2.3 KiB
JavaScript
86 lines
2.3 KiB
JavaScript
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2016 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 sensorObj = require('jsupm_t3311');
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/************** Main code **************/
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var defaultDev = "/dev/ttyUSB0";
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// if an argument was specified, use it as the device instead
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if (process.argv.length > 2)
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{
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defaultDev = process.argv[2];
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}
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console.log("Initializing...");
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// Instantiate an T3311 instance, using MODBUS slave address 1, and
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// default comm parameters (9600, 8, N, 2)
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var sensor = new sensorObj.T3311(defaultDev, 1);
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// output the serial number and firmware revision
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console.log("Serial Number:", sensor.getSerialNumber());
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console.log("Firmware Revision:", sensor.getFirmwareMajor() + "." +
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sensor.getFirmwareMinor());
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console.log("");
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// update and print available values every second
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setInterval(function()
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{
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// update our values from the sensor
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sensor.update();
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// we show both C and F for temperature
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console.log("Temperature:", sensor.getTemperature(),
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"C /", sensor.getTemperature(true), "F");
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console.log("Humidity:", sensor.getHumidity(), "%");
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// this value depends on the sensor configuration -- by default
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// it is the dew point temperature
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console.log("Computed Value:", sensor.getComputedValue());
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// with FW revisions > 2.44, extended computed data is available
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if (sensor.extendedDataAvailable())
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{
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console.log("Dew Point Temperature:", sensor.getDewPointTemperature(),
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"C /", sensor.getDewPointTemperature(true), "F");
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console.log("Absolute Humidity:", sensor.getAbsoluteHumidity(),
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"g/m3");
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console.log("Specific Humidity:", sensor.getSpecificHumidity(),
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"g/kg");
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console.log("Mixing Ratio:", sensor.getMixingRatio(),
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"g/kg");
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console.log("Specific Enthalpy:", sensor.getSpecificEnthalpy(),
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"kJ/kg");
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}
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console.log("");
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}, 1000);
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process.on('SIGINT', function()
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{
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sensor = null;
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sensorObj.cleanUp();
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sensorObj = null;
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console.log("Exiting...");
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process.exit(0);
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});
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