1 /*
2 * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.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 "mq9.h"
28 #include <signal.h>
29 #include <stdlib.h>
30 #include <sys/time.h>
31
32 int is_running = 0;
33 uint16_t buffer [128];
34 upm::MQ9 *sensor = NULL;
35
36 void
sig_handler(int signo)37 sig_handler(int signo)
38 {
39 printf("got signal\n");
40 if (signo == SIGINT) {
41 is_running = 1;
42 }
43 }
44
45 //! [Interesting]
46 int
main(int argc,char ** argv)47 main(int argc, char **argv)
48 {
49 sensor = new upm::MQ9(0);
50 signal(SIGINT, sig_handler);
51
52 thresholdContext ctx;
53 ctx.averageReading = 0;
54 ctx.runningAverage = 0;
55 ctx.averagedOver = 2;
56
57 while (!is_running) {
58 int len = sensor->getSampledWindow (2, 128, buffer);
59 if (len) {
60 int thresh = sensor->findThreshold (&ctx, 30, buffer, len);
61 sensor->printGraph(&ctx, 5);
62 if (thresh) {
63 // do something ....
64 }
65 }
66 }
67
68 std::cout << "exiting application" << std::endl;
69
70 delete sensor;
71
72 return 0;
73 }
74 //! [Interesting]
75