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/* -*- c -*- */
/*
* Copyright 2007 Free Software Foundation, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INCLUDED_I2C_H
#define INCLUDED_I2C_H
#include <stdbool.h>
#include "stdint.h"
typedef enum { I2C_STATE_IDLE,
I2C_STATE_CONTROL_BYTE_SENT,
I2C_STATE_DATA,
I2C_STATE_LAST_BYTE,
I2C_STATE_DATA_READY,
I2C_STATE_ERROR
} i2c_state_t;
typedef enum { I2C_DIR_WRITE=0, I2C_DIR_READ=1 } i2c_dir_t;
void i2c_init(void);
bool i2c_read (unsigned char i2c_addr, unsigned char *buf, unsigned int len);
bool i2c_write(unsigned char i2c_addr, const unsigned char *buf, unsigned int len);
bool i2c_async_read(uint8_t addr, unsigned int len);
bool i2c_async_write(uint8_t addr, const uint8_t *buf, unsigned int len);
bool i2c_async_data_ready(const void *);
//static void i2c_irq_handler(unsigned irq);
void i2c_register_callback(void (*callback)(void));
// Write 24LC024 / 24LC025 EEPROM on motherboard or daughterboard.
// Which EEPROM is determined by i2c_addr. See i2c_addr.h
bool eeprom_write (int i2c_addr, int eeprom_offset, const void *buf, int len);
bool eeprom_write_async (int i2c_addr, int eeprom_offset, const void *buf, int len, void (*callback)(void));
// Read 24LC024 / 24LC025 EEPROM on motherboard or daughterboard.
// Which EEPROM is determined by i2c_addr. See i2c_addr.h
bool eeprom_read (int i2c_addr, int eeprom_offset, void *buf, int len);
bool eeprom_read_async(int i2c_addr, int eeprom_offset, void *buf, int len, void (*callback)(void));
#endif /* INCLUDED_I2C_H */
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