1 /*
2 * Author: Jon Trulson <jtrulson@ics.com>
3 * Copyright (c) 2014 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 #include <unistd.h>
26 #include <iostream>
27 #include <signal.h>
28 #include "grovewfs.h"
29
30 using namespace std;
31
32 int shouldRun = true;
33
sig_handler(int signo)34 void sig_handler(int signo)
35 {
36 if (signo == SIGINT)
37 shouldRun = false;
38 }
39
40
main()41 int main()
42 {
43 signal(SIGINT, sig_handler);
44
45 //! [Interesting]
46 // Instantiate a Grove Water Flow Sensor on digital pin D2
47 upm::GroveWFS* flow = new upm::GroveWFS(2);
48
49 // set the flow counter to 0 and start counting
50 flow->clearFlowCounter();
51 flow->startFlowCounter();
52
53 while (shouldRun)
54 {
55 // we grab these (,illis and flowCount) just for display
56 // purposes in this example
57 uint32_t millis = flow->getMillis();
58 uint32_t flowCount = flow->flowCounter();
59
60 float fr = flow->flowRate();
61
62 // output milliseconds passed, flow count, and computed flow rate
63 cout << "Millis: " << millis << " Flow Count: " << flowCount;
64 cout << " Flow Rate: " << fr << " LPM" << endl;
65
66 // best to gather data for at least one second for reasonable
67 // results.
68 sleep(2);
69 }
70
71 flow->stopFlowCounter();
72 //! [Interesting]
73
74 cout << "Exiting..." << endl;
75
76 delete flow;
77 return 0;
78 }
79