1 /* 2 * Author: Jon Trulson <jtrulson (at) 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 34 void sig_handler(int signo) 35 { 36 if (signo == SIGINT) 37 shouldRun = false; 38 } 39 40 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
