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#ifndef __i2c_h

#define __i2c_h

#include "msg_queues.h"

#define MAXI2CBUF MSGLEN

#define I2C_IDLE            0x5

#define I2C_STARTED         0x6

#define	I2C_RCV_DATA        0x7

#define I2C_SEND_DATA       0x8

#define I2C_SEND_ADDR       0x9

#define I2C_CHECK_ACK       0xB

#define I2C_REQ_DATA        0xC

#define I2C_SEND_STOP       0xD

#define I2C_MODE_SLAVE      0x10

#define I2C_MODE_MASTER     0x11

#define I2C_MASTER_SEND     0x20

#define I2C_MASTER_RECV     0x21

#define I2C_MASTER_IDLE     0x22

#define I2C_ERR_THRESHOLD   1

#define I2C_ERR_OVERRUN     0x4

#define I2C_ERR_NOADDR      0x5

#define I2C_ERR_NODATA      0x6

#define I2C_ERR_MSGTOOLONG  0x7

#define I2C_ERR_MSG_TRUNC   0x8

typedef struct __I2C_DATA {

    unsigned char *buffer;

    int buflen;

    unsigned char status;

    unsigned char bufind;

    unsigned char slave_event_count;

    unsigned char slave_error_code;

    unsigned char slave_error_count;

    unsigned char slave_in_last_byte;

    unsigned char slave_outbufmsgtype;

    unsigned char slave_sending_data;

    unsigned char slave_sending_blank_data;

    unsigned char master_dest_addr;

    unsigned char master_state;

    unsigned char mode;

} I2C_DATA; // 16 bytes overhead

void i2c_init(I2C_DATA *);

void i2c_interrupt_handler(void);

void i2c_interrupt_slave(void);

void i2c_interrupt_master(void);

void i2c_configure_slave(unsigned char);

void i2c_configure_master(void);

void i2c_master_send(unsigned char address, unsigned char length,unsigned char *msg);

void i2c_master_recv(unsigned char address, unsigned char length);

unsigned char i2c_master_busy(void);

#endif