mirror of
https://github.com/eclipse/upm.git
synced 2025-03-24 01:10:22 +03:00
44 lines
1.0 KiB
JavaScript
44 lines
1.0 KiB
JavaScript
/*
|
|
* Author: Jon Trulson <jtrulson@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 sensorObj = require('jsupm_dfrph');
|
|
|
|
// Instantiate a DFRPH sensor on analog pin A0, with an analog
|
|
// reference voltage of 5.0
|
|
var sensor = new sensorObj.DFRPH(0, 5.0);
|
|
|
|
|
|
// After calibration, set the offset (based on calibration with a pH
|
|
// 7.0 buffer solution). See the UPM sensor documentation for
|
|
// calibrations instructions.
|
|
sensor.setOffset(0.065);
|
|
|
|
// Every second, sample the pH and output it's corresponding
|
|
// analog voltage.
|
|
|
|
setInterval(function()
|
|
{
|
|
console.log("Detected volts: " + sensor.volts());
|
|
console.log("pH value: " + sensor.pH());
|
|
}, 1000);
|
|
|
|
// exit on ^C
|
|
process.on('SIGINT', function()
|
|
{
|
|
sensor = null;
|
|
sensorObj.cleanUp();
|
|
sensorObj = null;
|
|
console.log("Exiting.");
|
|
process.exit(0);
|
|
});
|
|
|