mirror of
https://github.com/eclipse/upm.git
synced 2025-03-24 01:10:22 +03:00
64 lines
1.6 KiB
JavaScript
64 lines
1.6 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 CO2_lib = require('jsupm_mhz16');
|
|
|
|
// Instantiate a MHZ16 serial CO2 sensor on uart 0.
|
|
// This example was tested on the Grove CO2 sensor module.
|
|
var myCO2_obj = new CO2_lib.MHZ16(0);
|
|
|
|
// make sure port is initialized properly. 9600 baud is the default.
|
|
if (!myCO2_obj.setupTty(CO2_lib.int_B9600))
|
|
{
|
|
console.log("Failed to setup tty port parameters");
|
|
process.exit(0);
|
|
}
|
|
|
|
outputStr = "Make sure that the sensor has had " +
|
|
"at least 3 minutes to warm up";
|
|
console.log(outputStr);
|
|
outputStr = "or you will not get valid results.";
|
|
console.log(outputStr);
|
|
outputStr = "The temperature reported is not the ambient temperature,";
|
|
console.log(outputStr);
|
|
outputStr = "but rather the temperature of the sensor elements.";
|
|
console.log(outputStr);
|
|
|
|
function writeCO2data()
|
|
{
|
|
if (!myCO2_obj.getData())
|
|
console.log("Failed to retrieve data");
|
|
else
|
|
{
|
|
outputStr = "CO2 concentration: " + myCO2_obj.getGas() +
|
|
" PPM, " +
|
|
"Temperature (in C): " + myCO2_obj.getTemperature();
|
|
console.log(outputStr);
|
|
}
|
|
}
|
|
var myInterval;
|
|
setTimeout(function()
|
|
{
|
|
myInterval = setInterval(writeCO2data, 2000);
|
|
}, 1000);
|
|
|
|
|
|
// Print message, clear memory when exiting
|
|
process.on('SIGINT', function()
|
|
{
|
|
clearInterval(myInterval);
|
|
myCO2_obj = null;
|
|
CO2_lib.cleanUp();
|
|
CO2_lib = null;
|
|
console.log("Exiting");
|
|
process.exit(0);
|
|
});
|