collision.h

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/*
 * Author: Zion Orent <sorent@ics.com>
 *         Abhishek Malik <abhishek.malik@intel.com>
 * Copyright (c) 2015 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.
 */
#ifndef COLLISION_H_
#define COLLISION_H_

#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include "upm.h"
#include "mraa/gpio.h"

typedef struct _collision_context {
    mraa_gpio_context        gpio;
    uint8_t                  gpio_pin;
} *collision_context;

collision_context collision_init(int pin);

void collision_close(collision_context dev);

upm_result_t collision_is_colliding(collision_context dev, bool* collision_val);

#endif /* COLLISION_H_ */