83a67b96fd
Modify the C++ examples to be of same coding standard like C. As a part of this cleanup, a new LED example is also added. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
/*
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* Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
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* Copyright (c) 2014 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Example usage: Generates PWM at a step rate of 0.01 continuously.
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* Press Ctrl+C to exit
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*/
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/* standard headers */
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#include <iostream>
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#include <signal.h>
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#include <stdlib.h>
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#include <unistd.h>
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/* mraa headers */
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#include "mraa/common.hpp"
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#include "mraa/pwm.hpp"
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#define PWM_PORT 3
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volatile sig_atomic_t flag = 1;
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void
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sig_handler(int signum)
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{
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if (signum == SIGINT) {
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std::cout << "Exiting..." << std::endl;
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flag = 0;
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}
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}
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int
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main(void)
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{
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float value = 0.0f;
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signal(SIGINT, sig_handler);
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//! [Interesting]
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mraa::Pwm pwm(PWM_PORT);
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std::cout << "Cycling PWM on IO3 (pwm3)" << std::endl;
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pwm.enable(true);
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while (flag) {
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value = value + 0.01f;
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pwm.write(value);
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usleep(50000);
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if (value >= 1.0f) {
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value = 0.0f;
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}
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}
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//! [Interesting]
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return EXIT_SUCCESS;
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}
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