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tp401: grove air quality sensor and examples

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Signed-off-by: Mihai Tudor Panu <mihai.t.panu@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Mihai Tudor Panu
2014-11-26 17:37:06 +00:00
committed by Brendan Le Foll
parent 801209678b
commit 7bb5fd8ec7
11 changed files with 328 additions and 3 deletions
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examples/javascript/tp401.js Normal file
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/*
* Author: Mihai Tudor Panu <mihai.t.panu@intel.com>
* Copyright (c) 2014 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 upmTP401 = require('jsupm_gas');
//var time = require('sleep');
//give a qualitative meaning to the value from the sensor
function airQuality(value)
{
if(value < 50) return "Fresh Air";
if(value < 200) return "Normal Indoor Air";
if(value < 400) return "Low Pollution";
if(value < 600) return "High Pollution - Action Recommended";
return "Very High Pollution - Take Action Immediately";
}
function loop()
{
//read values (consecutive reads might vary slightly)
var value = airSensor.getSample();
var ppm = airSensor.getPPM();
//write the sensor values to the console
console.log("raw: " + value + " ppm: " + (" " + ppm.toFixed(2)).substring(-5, 5) + " " + airQuality(value));
//wait 2.5 s then call function again
setTimeout(loop, 2500);
}
//setup sensor on Analog pin #0 (A0)
var airSensor = new upmTP401.TP401(0);
//warm up sensor
console.log("Sensor is warming up for 3 minutes..");
var i = 1;
//print a message every passing minute
var waiting = setInterval(function() {
console.log(i++ + " minute(s) passed.");
if(i == 3) clearInterval(waiting);
}, 60000);
//start loop in 3 minutes
setTimeout(function(){
console.log("Sensor is ready!");
loop();
}, 180000);