1 /*
2  * Author: Stefan Andritoiu <stefan.andritoiu@intel.com>
3  * Copyright (c) 2015 Intel Corporation.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be
14  * included in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23  */
24 
25 //NOT TESTED!!!
26 public class GroveEHRSample {
27 
28 	static {
29 		try {
30 			System.loadLibrary("javaupm_groveehr");
31 		} catch (UnsatisfiedLinkError e) {
32 			System.err.println("error in loading native library");
33 			System.exit(-1);
34 		}
35 	}
36 
main(String[] args)37 	public static void main(String[] args) throws InterruptedException {
38 		// ! [Interesting]
39 		// Instantiate a Grove Ear-clip Heart Rate sensor on digital pin D2
40 		upm_groveehr.GroveEHR heart = new upm_groveehr.GroveEHR(2);
41 
42 		// set the beat counter to 0, init the clock and start counting beats
43 		heart.clearBeatCounter();
44 		heart.initClock();
45 		heart.startBeatCounter();
46 
47 		while (true) {
48 			long millis = heart.getMillis();
49 			long beats = heart.beatCounter();
50 
51 			// heartRate() requires that at least 5 seconds pass before
52 			// returning anything other than 0
53 			int hr = heart.heartRate();
54 
55 			// output milliseconds passed, beat count, and computed heart rate
56 			System.out.println("Millis: " + millis + ", Beats: " + beats + ", Heart rate: " + hr);
57 
58 			Thread.sleep(1000);
59 		}
60 		// ! [Interesting]
61 	}
62 }