/* * Author: Jon Trulson * Copyright (c) 2016 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 #include "yg1006.h" yg1006_context yg1006_init(unsigned int pin) { yg1006_context dev = (yg1006_context)malloc(sizeof(struct _yg1006_context)); if (!dev) return NULL; dev->gpio = NULL; // make sure MRAA is initialized int mraa_rv; if ((mraa_rv = mraa_init()) != MRAA_SUCCESS) { printf("%s: mraa_init() failed (%d).\n", __FUNCTION__, mraa_rv); yg1006_close(dev); return NULL; } // initialize the MRAA context if (!(dev->gpio = mraa_gpio_init(pin))) { printf("%s: mraa_gpio_init() failed.\n", __FUNCTION__); yg1006_close(dev); return NULL; } mraa_gpio_dir(dev->gpio, MRAA_GPIO_IN); return dev; } void yg1006_close(yg1006_context dev) { assert(dev != NULL); if (dev->gpio) mraa_gpio_close(dev->gpio); free(dev); } bool yg1006_flame_detected(const yg1006_context dev) { assert(dev != NULL); // gpio is low when a flame is detected return (mraa_gpio_read(dev->gpio) ? false : true); }