i2c.h

#ifndef _SYSIO_I2C_H_
#define _SYSIO_I2C_H_
#include <sysio/defs.h>
#ifdef __cplusplus
  extern "C" {
#endif
/* ========================================================================== */

/* constants ================================================================ */
#define I2C_BLOCK_MAX 32

/* internal public functions ================================================ */
int iI2cOpen (const char * device, int i2caddr);

int iI2cClose (int fd);

int iI2cRead           (int fd);

int iI2cReadBlock      (int fd, uint8_t * buffer, int size);

int iI2cReadReg8       (int fd, uint8_t reg);

int iI2cReadReg16      (int fd, uint8_t reg);

int iI2cReadRegBlock   (int fd, uint8_t reg, uint8_t * buffer, uint8_t size);

int iI2cWrite          (int fd, uint8_t data);

int iI2cWriteBlock     (int fd, const uint8_t * buffer, int size);

int iI2cWriteReg8      (int fd, uint8_t reg, uint8_t data);

int iI2cWriteReg16     (int fd, uint8_t reg, uint16_t data);

int iI2cWriteRegBlock  (int fd, uint8_t reg, const uint8_t * buffer, uint8_t size);

#define I2CMEM_FLAG_ADDR16    0x80  
#define I2CMEM_FLAG_READONLY  0x40  
/* structures =============================================================== */

struct xI2cMem;

typedef struct xI2cMem xI2cMem;

xI2cMem * xI2cMemOpen (const char * device, int i2caddr, uint32_t mem_size, uint16_t page_size, uint8_t flags);

int iI2cMemAddr (const xI2cMem * mem);

uint32_t ulI2cMemSize (const xI2cMem * mem);

uint16_t usI2cMemPageSize (const xI2cMem * mem);

uint8_t ucI2cMemFlags (const xI2cMem * mem);


int iI2cMemClose (xI2cMem * mem);


int iI2cMemWrite  (xI2cMem * mem, uint32_t offset, const uint8_t * buffer, uint16_t size);


int iI2cMemRead  (xI2cMem * mem, uint32_t offset, uint8_t * buffer, uint16_t size);

/* ========================================================================== */
#ifdef __cplusplus
  }
#endif
#endif /*_SYSIO_I2C_H_ defined */