170bdd104f
Large change that removes the duplicated MIT notice withe a spdx tag Signed-off-by: Thomas Ingleby <thomas.ingleby@intel.com>
70 lines
1.5 KiB
C++
70 lines
1.5 KiB
C++
/*
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* Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
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* Copyright (c) 2018, Linaro Ltd.
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*
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* SPDX-License-Identifier: MIT
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*
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* Example usage: Reads maximum brightness value for user led and turns it
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* on/off depending on current state. Then sets led trigger
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* to heartbeat.
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*
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*/
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/* standard headers */
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#include <iostream>
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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/led.hpp"
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/* LED name */
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#define USER_LED "user1"
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/* trigger type */
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#define LED_TRIGGER "heartbeat"
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int
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main(void)
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{
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mraa::Result status;
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int val;
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//! [Interesting]
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/* initialize user1 led */
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mraa::Led led(USER_LED);
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/* read maximum brightness */
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val = led.readMaxBrightness();
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std::cout << "maximum brightness value for user1 led is: %d" << val << std::endl;
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if (val >= 1) {
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val = 0;
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} else {
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/* never reached mostly */
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val = 1;
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}
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/* turn led on/off depending on max_brightness value */
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status = led.setBrightness(val);
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if (status != mraa::SUCCESS) {
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printError(status);
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return EXIT_FAILURE;
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}
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/* sleep for 5 seconds */
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usleep(5000000);
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/* set led trigger to heartbeat */
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status = led.trigger(LED_TRIGGER);
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if (status != mraa::SUCCESS) {
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printError(status);
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return EXIT_FAILURE;
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}
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std::cout << "led trigger set to: heartbeat" << std::endl;
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//! [Interesting]
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return EXIT_SUCCESS;
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}
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