mirror of
https://github.com/eclipse/upm.git
synced 2025-03-22 00:17:30 +03:00
50 lines
1.4 KiB
JavaScript
50 lines
1.4 KiB
JavaScript
/*
|
|
* Author: Zion Orent <zorent@ics.com>
|
|
* Copyright (c) 2014 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
|
|
*/
|
|
|
|
// Load heart rate sensor module
|
|
var heartRateSensor = require('jsupm_ehr');
|
|
// Instantiate a Ear-clip Heart Rate sensor on digital pin D2
|
|
var myHeartRateSensor = new heartRateSensor.EHR(2);
|
|
|
|
// set the beat counter to 0, init the clock and start counting beats
|
|
myHeartRateSensor.clearBeatCounter();
|
|
myHeartRateSensor.initClock();
|
|
myHeartRateSensor.startBeatCounter();
|
|
|
|
var millis, beats, hr;
|
|
var myInterval = setInterval(function()
|
|
{
|
|
// we grab these just for display purposes in this example
|
|
millis = myHeartRateSensor.getMillis();
|
|
beats = myHeartRateSensor.beatCounter();
|
|
|
|
// heartRate() requires that at least 5 seconds pass before
|
|
// returning anything other than 0
|
|
hr = myHeartRateSensor.heartRate();
|
|
|
|
// output milliseconds passed, beat count, and computed heart rate
|
|
console.log("Millis: " + millis + " Beats: " + beats +
|
|
" Heart Rate: " + hr);
|
|
}, 1000);
|
|
|
|
// Print message when exiting
|
|
process.on('SIGINT', function()
|
|
{
|
|
clearInterval(myInterval);
|
|
myHeartRateSensor.stopBeatCounter();
|
|
myHeartRateSensor = null
|
|
heartRateSensor.cleanUp();
|
|
heartRateSensor = null;
|
|
|
|
console.log("Exiting");
|
|
process.exit(0);
|
|
});
|