/*
 * The Rin Library – gpio module
 *
 * Copyright (C) 2016 Gediminas Jakutis
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; version 2.1
 * of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#ifndef LIBRIN_GPIO_INCLUDED
#define LIBRIN_GPIO_INCLUDED

#include <limits.h>
#include <time.h>

enum rin_gpiotype {
	rin_gpio_in,
	rin_gpio_out,
	rin_gpio_closed
};

struct rin_gpio_dataset {
	unsigned int signalnum;
	unsigned int clocknum;
	struct timespec *pulseduration;
	struct timespec *delay;
	void *data;
	size_t len;
};

unsigned int rin_gpio_open(const unsigned int num, const enum rin_gpiotype type);
unsigned int rin_gpio_close(const unsigned int num);
unsigned int rin_gpio_setval(const unsigned int num, const unsigned int val);
unsigned int rin_gpio_readval(const unsigned int num, unsigned int * const val);
unsigned int rin_gpio_writesequence(const struct rin_gpio_dataset * const dataset);
unsigned int rin_gpio_on(const unsigned int num);
unsigned int rin_gpio_off(const unsigned int num);
unsigned int rin_gpio_pulse(const unsigned int num, const struct timespec * const pulselen);
unsigned int rin_gpio_num_exists(const unsigned int num);
unsigned int rin_gpio_get_numcount(void);
unsigned int rin_gpio_get_pincount(void);
unsigned int rin_gpio_pin_to_num(const unsigned int pin);
unsigned int rin_gpio_num_to_pin(const unsigned int num);

#endif /* LIBRIN_GPIO_INCLUDED */