wiringPiI2C.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <asm/ioctl.h>
#include "wiringPi.h"
#include "wiringPiI2C.h"

Classes
union	i2c_smbus_data
struct	i2c_smbus_ioctl_data

Macros
#define	I2C_SLAVE   0x0703
#define	I2C_SMBUS   0x0720 /* SMBus-level access */
#define	I2C_SMBUS_READ   1
#define	I2C_SMBUS_WRITE   0
#define	I2C_SMBUS_QUICK   0
#define	I2C_SMBUS_BYTE   1
#define	I2C_SMBUS_BYTE_DATA   2
#define	I2C_SMBUS_WORD_DATA   3
#define	I2C_SMBUS_PROC_CALL   4
#define	I2C_SMBUS_BLOCK_DATA   5
#define	I2C_SMBUS_I2C_BLOCK_BROKEN   6
#define	I2C_SMBUS_BLOCK_PROC_CALL   7 /* SMBus 2.0 */
#define	I2C_SMBUS_I2C_BLOCK_DATA   8
#define	I2C_SMBUS_BLOCK_MAX   32 /* As specified in SMBus standard */
#define	I2C_SMBUS_I2C_BLOCK_MAX   32 /* Not specified but we use same structure */

Functions
int	wiringPiI2CRead (int fd)
int	wiringPiI2CReadReg8 (int fd, int reg)
int	wiringPiI2CReadReg16 (int fd, int reg)
int	wiringPiI2CWrite (int fd, int data)
int	wiringPiI2CWriteReg8 (int fd, int reg, int value)
int	wiringPiI2CWriteReg16 (int fd, int reg, int value)
int	wiringPiI2CSetupInterface (const char *device, int devId)
int	wiringPiI2CSetup (const int devId)

Macro Definition Documentation

#define I2C_SLAVE   0x0703

#define I2C_SMBUS   0x0720 /* SMBus-level access */

#define I2C_SMBUS_BLOCK_DATA   5

#define I2C_SMBUS_BLOCK_MAX   32 /* As specified in SMBus standard */

#define I2C_SMBUS_BLOCK_PROC_CALL   7 /* SMBus 2.0 */

#define I2C_SMBUS_BYTE   1

#define I2C_SMBUS_BYTE_DATA   2

#define I2C_SMBUS_I2C_BLOCK_BROKEN   6

#define I2C_SMBUS_I2C_BLOCK_DATA   8

#define I2C_SMBUS_I2C_BLOCK_MAX   32 /* Not specified but we use same structure */

#define I2C_SMBUS_PROC_CALL   4

#define I2C_SMBUS_QUICK   0

#define I2C_SMBUS_READ   1

#define I2C_SMBUS_WORD_DATA   3

#define I2C_SMBUS_WRITE   0

Function Documentation

int wiringPiI2CRead

(

int

fd

)

int wiringPiI2CReadReg16	(	int	fd,
		int	reg
	)

int wiringPiI2CReadReg8	(	int	fd,
		int	reg
	)

int wiringPiI2CSetup

(

const int

devId

)

int wiringPiI2CSetupInterface	(	const char *	device,
		int	devId
	)

int wiringPiI2CWrite	(	int	fd,
		int	data
	)

int wiringPiI2CWriteReg16	(	int	fd,
		int	reg,
		int	value
	)

int wiringPiI2CWriteReg8	(	int	fd,
		int	reg,
		int	value
	)