upm/examples/javascript/ds18b20.js
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

56 lines
1.2 KiB
JavaScript

/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2016-2017 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 sensorObj = require('jsupm_ds18b20');
/************** Main code **************/
console.log("Initializing...");
// Instantiate an DS18B20 instance using the default values (uart 0)
var sensor = new sensorObj.DS18B20(0);
console.log("Found", sensor.devicesFound(), "device(s)");
console.log("");
if (!sensor.devicesFound())
{
process.exit(1);
}
// update and print available values every 2 seconds
setInterval(function()
{
// update our values for all of the detected sensors
sensor.update(-1);
// we show both C and F for temperature for the sensors
for (var i=0; i<sensor.devicesFound(); i++)
{
console.log("Device:", i, "Temperature:", sensor.getTemperature(i),
"C /", sensor.getTemperature(i, true), "F");
}
console.log();
}, 2000);
process.on('SIGINT', function()
{
sensor = null;
sensorObj.cleanUp();
sensorObj = null;
console.log("Exiting...");
process.exit(0);
});