peripheral/libupm/examples/javascript/teams.js

/*jslint node:true, vars:true, bitwise:true, unparam:true */
/*jshint unused:true */

/*
 * Author: Jon Trulson <jtrulson@ics.com>
 * Copyright (c) 2016 Intel Corporation.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */


var sensorObj = require('jsupm_teams');


/************** Main code **************/

console.log("Initializing...");

// Instantiate an TEAMS instance, using A0 for temperature, and
// 165.0 ohms for the rResistor value (for the libelium 4-20ma
// interface)
var sensor = new sensorObj.TEAMS(0, 165.0);

// update and print available values every second
setInterval(function()
{
    // update our values from the sensor
    sensor.update();

    // is the sensor connected? (current >= 4ma)
    console.log("Is Connected:", sensor.isConnected());
    
    // print computed current on the loop.  This includes the offset,
    // if one was set by setOffsetMilliamps().
    console.log("Milliamps:", sensor.getRawMilliamps());

    // we show both C and F for temperature
    console.log("Temperature:", sensor.getTemperature(),
                "C /", sensor.getTemperature(true), "F");

    console.log("");

}, 1000);


process.on('SIGINT', function()
{
    sensor = null;
    sensorObj.cleanUp();
    sensorObj = null;
    console.log("Exiting...");
    process.exit(0);
});