1 /*
2 * Author: Jon Trulson <jtrulson@ics.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 #include <unistd.h>
26 #include <iostream>
27 #include <signal.h>
28 #include "rpr220.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 volatile unsigned int counter = 0;
41
42 // Our interrupt handler
rprISR(void * arg)43 void rprISR(void *arg)
44 {
45 counter++;
46 }
47
48
main()49 int main()
50 {
51 signal(SIGINT, sig_handler);
52
53 //! [Interesting]
54 // This example uses an interrupt handler to increment a counter
55
56 // Instantiate an RPR220 digital pin D2
57 // This was tested on the Grove IR Reflective Sensor
58
59 upm::RPR220* rpr220 = new upm::RPR220(2);
60
61 // Here, we setup our Interupt Service Routine (ISR) to count
62 // 'black' pulses detected.
63
64 rpr220->installISR(rprISR, NULL);
65
66 while (shouldRun)
67 {
68 cout << "Counter: " << counter << endl;
69
70 sleep(1);
71 }
72 //! [Interesting]
73
74 cout << "Exiting..." << endl;
75
76 delete rpr220;
77 return 0;
78 }
79