i2c.h

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/* This file is part of rflpc. Copyright 2010-2011 Michael Hauspie
 *
 * rflpc 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.
 *
 * rflpc 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 rflpc.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __RFLPC_I2C_H__
#define __RFLPC_I2C_H__

/*
  Author: Christophe Bacara <christophe.bacara@etudiant.univ-lille1.fr>  
*/

#ifdef RFLPC_CONFIG_ENABLE_I2C

#include <stdint.h> /* uint8_t */

typedef enum { 
   RFLPC_I2C_PORT0, 
   RFLPC_I2C_PORT1, 
   RFLPC_I2C_PORT2
} rflpc_i2c_port_t;

typedef enum { 
   RFLPC_I2C_MODE_MASTER, 
   RFLPC_I2C_MODE_SLAVE
} rflpc_i2c_mode_t;

typedef enum {
   RFLPC_I2C_SUCCESSFUL_TRANSMISSION = 0,
   RFLPC_I2C_SIZE_EQUAL_TO_ZERO,
   RFLPC_I2C_SLAVE_IS_BUSY,
   RFLPC_I2C_SLAVE_DID_NOT_ACKNOWLEDGED_DATA,
   RFLPC_I2C_MASTER_DID_NOT_ACKNOWLEDGED_DATA,
   RFLPC_I2C_STOP_CONDITION_RECEIVED,
   RFLPC_I2C_SLAVE_TRANSMITTED_DATA,
   RFLPC_I2C_UNKNOWN_ERROR,
   RFLPC_I2C_NOT_YET_IMPLEMENTED
} rflpc_i2c_status_t;

extern int rflpc_i2c_init(rflpc_i2c_port_t port, rflpc_i2c_mode_t mode, uint8_t addr);

extern uint16_t rflpc_i2c_write(rflpc_i2c_port_t port, uint8_t addr, 
                uint8_t *data, uint8_t nbytes, uint8_t stop);

extern uint16_t rflpc_i2c_read(rflpc_i2c_port_t port, uint8_t addr, 
                   uint8_t *data, uint8_t nbytes, uint8_t stop);

extern void rflpc_i2c_set_slave_transmitter_config(uint8_t *data, uint8_t size);

#endif /* ENABLE_I2C */

#endif