/*
* Author: Brendan Le Foll <brendan.le.foll@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* 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.
*/
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>
#include <stdlib.h>
#include "mraa.h"
#define DEFAULT_IOPIN 8
int running = 0;
static int iopin;
void
sig_handler(int signo)
{
if (signo == SIGINT) {
printf("closing IO%d nicely\n", iopin);
running = -1;
}
}
int
main(int argc, char** argv)
{
mraa_result_t r = MRAA_SUCCESS;
iopin = DEFAULT_IOPIN;
if (argc < 2) {
printf("Provide an int arg if you want to flash on something other than %d\n", DEFAULT_IOPIN);
} else {
iopin = strtol(argv[1], NULL, 10);
}
mraa_init();
fprintf(stdout, "MRAA Version: %s\nStarting Blinking on IO%d\n", mraa_get_version(), iopin);
mraa_gpio_context gpio;
gpio = mraa_gpio_init(iopin);
if (gpio == NULL) {
fprintf(stderr, "Are you sure that pin%d you requested is valid on your platform?", iopin);
exit(1);
}
printf("Initialised pin%d\n", iopin);
// set direction to OUT
r = mraa_gpio_dir(gpio, MRAA_GPIO_OUT);
if (r != MRAA_SUCCESS) {
mraa_result_print(r);
}
signal(SIGINT, sig_handler);
while (running == 0) {
r = mraa_gpio_write(gpio, 0);
if (r != MRAA_SUCCESS) {
mraa_result_print(r);
} else {
printf("off\n");
}
sleep(1);
r = mraa_gpio_write(gpio, 1);
if (r != MRAA_SUCCESS) {
mraa_result_print(r);
} else {
printf("on\n");
}
sleep(1);
}
r = mraa_gpio_close(gpio);
if (r != MRAA_SUCCESS) {
mraa_result_print(r);
}
return r;
}