Blink¶
About¶
Turn a LED on and off periodically once a second. This example illustrates how to use digital pins and sleep a thread.
See the Digital pin Library Reference for more details.
Source code¶
/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2018, Erik Moqvist
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* This file is part of the Simba project.
*/
#include "simba.h"
int main()
{
struct pin_driver_t led;
/* Start the system. */
sys_start();
/* Initialize the LED pin as output and set its value to 1. */
pin_init(&led, &pin_led_dev, PIN_OUTPUT);
pin_write(&led, 1);
while (1) {
/* Wait half a second. */
thrd_sleep_ms(500);
/* Toggle the LED on/off. */
pin_toggle(&led);
}
return (0);
}
The source code can also be found on Github in the examples/blink folder.