Mihai Tudor Panu 89d5de43e0 license: update to SPDX style license text throughout
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
2020-03-05 15:13:36 -08:00

45 lines
1.2 KiB
JavaScript

/*
* Author: Zion Orent <zorent@ics.com>
* 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 upmMQ3 = require("jsupm_gas");
// Attach gas sensor to AIO0
var myMQ3 = new upmMQ3.MQ3(0);
var threshContext = new upmMQ3.thresholdContext;
threshContext.averageReading = 0;
threshContext.runningAverage = 0;
threshContext.averagedOver = 2;
// Infinite loop, ends when script is cancelled
// Repeatedly, take a sample every 2 milliseconds;
// find the average of 128 samples; and
// print a running graph of the averages using a resolution of 5
while(1)
{
var buffer = new upmMQ3.uint16Array(128);
var len = myMQ3.getSampledWindow(2, 128, buffer);
if (len)
{
var thresh = myMQ3.findThreshold(threshContext, 30, buffer, len);
myMQ3.printGraph(threshContext, 5);
//if (thresh)
// console.log("Threshold is " + thresh);
}
}
// Print message when exiting
process.on('SIGINT', function()
{
console.log("Exiting...");
process.exit(0);
});