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#ifndef I2C1_H

#define I2C1_H

#define MAXI2C1BUF 8

// I2C Operating Speed

#define I2C_100KHZ              0x0

#define I2C_400KHZ              0x1

#define I2C_1MHZ                0x2

// Operating State

#define I2C_IDLE                0x1

#define I2C_STARTED             0x2

#define	I2C_RCV_DATA            0x3

#define I2C_SEND_DATA           0x4

#define I2C_SEND_ADDR           0x5

#define I2C_SEND_ADDR_2         0x6

#define I2C_CHECK_ACK_SEND      0x7

#define I2C_CHECK_ACK_RECV      0x8

#define I2C_CHECK_ACK_RESTART   0x9

#define I2C_REQ_DATA            0xA

#define I2C_SEND_STOP           0xB

#define I2C_SEND_START          0xC

// Operating Mode

#define I2C_MODE_SLAVE          0x10

#define I2C_MODE_MASTER         0x11

// Master Status

#define I2C_MASTER_SEND         0x20

#define I2C_MASTER_RECV         0x21

#define I2C_MASTER_RESTART      0x22

#define I2C_MASTER_IDLE         0x23

// Return Status

#define I2C_SEND_OK             0x30

#define I2C_SEND_FAIL           0x31

#define I2C_RECV_OK             0x32

#define I2C_RECV_FAIL           0x33

#define I2C_DATA_AVAL           0x34

#define I2C_ERR_NOADDR          0x35

#define I2C_ERR_OVERRUN         0x36

#define I2C_ERR_NODATA          0x37

#define I2C_ERR_BUFFER_OVERRUN  0x38

typedef struct {

    uint8_t buffer_in[MAXI2C1BUF];

    uint8_t buffer_in_len;

    uint8_t buffer_in_read_ind;

    uint8_t buffer_in_write_ind;

    uint8_t operating_state;

    uint8_t return_status;

    uint8_t master_dest_addr;

    uint8_t master_status;

} I2C1_DATA;

void I2C1_Init(void);

void I2C1_Interrupt_Handler(void);

void I2C1_Configure_Master(uint8_t speed);

void I2C1_Master_Send(uint8_t address, uint8_t length, uint8_t *msg);

void I2C1_Master_Recv(uint8_t address, uint8_t length);

void I2C1_Master_Restart(uint8_t address, uint8_t msg, uint8_t length);

uint8_t I2C1_Get_Status(void);

uint8_t I2C1_Buffer_Len(void);

uint8_t I2C1_Read_Buffer(uint8_t *buffer);

#endif