/* * 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; }