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