96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
/*
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* Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
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* Copyright (c) 2018 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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#include <iostream>
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#include <string>
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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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#include "mraa/common.hpp"
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#include "mraa/led.hpp"
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// Define min and max brightness
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#define LED_ON 255
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#define LED_OFF 0
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// This boolean controls the main loop
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volatile bool should_run = true;
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// Interrupt signal handler function
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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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should_run = false;
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}
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}
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// Main function
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int
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main()
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{
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// Perform a basic platform and version check
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if (mraa::getPlatformType() != mraa::INTEL_UP2) {
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std::cout << "This example is meant for the UP Squared board." << std::endl;
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std::cout << "Running it on different platforms will likely require code changes!" << std::endl;
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}
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if (mraa::getVersion().compare("v1.9.0") < 0) {
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std::cout << "You need MRAA version 1.9.0 or newer to run this sample!" << std::endl;
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return 1;
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}
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// Register handler for keyboard interrupts
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signal(SIGINT, sig_handler);
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// Define our LEDs
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std::string led_names[] = {"red", "green", "yellow", "blue"};
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int led_no = sizeof(led_names)/sizeof(led_names[0]);
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mraa::Led **leds = new mraa::Led*[led_no];
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// Initialize them
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for (int i = 0; i < led_no; i++) {
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leds[i] = new mraa::Led(led_names[i].c_str());
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}
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// Blink them in order and pause in-between
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while (should_run) {
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for (int i = 0; i < led_no; i++) {
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leds[i]->setBrightness(LED_ON);
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usleep(200000);
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leds[i]->setBrightness(LED_OFF);
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}
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usleep(200000);
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}
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// Cleanup and exit
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for (int i = 0; i < led_no; i++) {
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delete leds[i];
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}
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delete [] leds;
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return 0;
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}
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