File content as of revision 8:70fc373a5f46:

/***************************************************************************//**
 *   @file   i2c.h
 *   @author DBogdan (dragos.bogdan@analog.com)
********************************************************************************
 * Copyright 2019(c) Analog Devices, Inc.
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *  - Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  - Neither the name of Analog Devices, Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *  - The use of this software may or may not infringe the patent rights
 *    of one or more patent holders.  This license does not release you
 *    from the requirement that you obtain separate licenses from these
 *    patent holders to use this software.
 *  - Use of the software either in source or binary form, must be run
 *    on or directly connected to an Analog Devices Inc. component.
 *
 * THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
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*******************************************************************************/

#ifndef I2C_H_
#define I2C_H_

/******************************************************************************/
/***************************** Include Files **********************************/
/******************************************************************************/

#include <stdint.h>

/******************************************************************************/
/*************************** Types Declarations *******************************/
/******************************************************************************/

typedef enum i2c_transfer_mode {
	i2c_general_call =	0x01,
	i2c_repeated_start =	0x02,
	i2c_10_bit_transfer =	0x04
} i2c_transfer_mode;

typedef struct i2c_init_param {
	uint32_t	max_speed_hz;
	uint8_t		slave_address;
	void		*extra;
} i2c_init_param;

typedef struct i2c_desc {
	uint32_t	max_speed_hz;
	uint8_t		slave_address;
	void		*extra;
} i2c_desc;

/******************************************************************************/
/************************ Functions Declarations ******************************/
/******************************************************************************/

/* Initialize the I2C communication peripheral. */
int32_t i2c_init(struct i2c_desc **desc,
		 const struct i2c_init_param *param);

/* Free the resources allocated by i2c_init(). */
int32_t i2c_remove(struct i2c_desc *desc);

/* Write data to a slave device. */
int32_t i2c_write(struct i2c_desc *desc,
		  uint8_t *data,
		  uint8_t bytes_number,
		  uint8_t option);

/* Read data from a slave device. */
int32_t i2c_read(struct i2c_desc *desc,
		 uint8_t *data,
		 uint8_t bytes_number,
		 uint8_t option);

#endif // I2C_H_