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 "cjq4435.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 CJQ4435 MOSFET on a PWM capable digital pin D3
47 upm::CJQ4435* mosfet = new upm::CJQ4435(3);
48
49 mosfet->setPeriodMS(10);
50 mosfet->enable(true);
51
52 while (shouldRun)
53 {
54 // start with a duty cycle of 0.0 (off) and increment to 1.0 (on)
55 for (float i=0.0; i <= 1.0; i+=0.1)
56 {
57 mosfet->setDutyCycle(i);
58 usleep(100000);
59 }
60 sleep(1);
61 // Now take it back down
62 // start with a duty cycle of 1.0 (on) and decrement to 0.0 (off)
63 for (float i=1.0; i >= 0.0; i-=0.1)
64 {
65 mosfet->setDutyCycle(i);
66 usleep(100000);
67 }
68 sleep(1);
69 }
70
71 //! [Interesting]
72
73 cout << "Exiting..." << endl;
74
75 delete mosfet;
76 return 0;
77 }
78