i2c.h File Reference

I2C driver header. More...

#include <stdio.h>
#include "bcm2835.h"

Go to the source code of this file.

Macros
#define	baudrate   100000

Functions
void	I2C_Initialize (unsigned char address)
	Initializes the I2C peripheral. More...
void	I2C_WriteByte (char byte)
	Writes a byte value to the I2C bus. This assumes the register pointer is preset. More...
void	I2C_WriteByteRegister (unsigned char reg, unsigned char data)
	Writes a byte value to a register address. More...
void	I2C_WriteWordRegister (unsigned char reg, unsigned char *data)
	Writes a word value (16 bit) to a register address. More...
void	I2C_WriteByteArray (char reg, char *data, unsigned int length)
	Writes a buffer array to the registers. More...
unsigned char	I2C_ReadByteRegister (char reg)
	Reads a byte from a register. More...
void	I2C_ReadByteArray (char reg, char *buffer, unsigned int length)
	Initializes the I2C peripheral. More...
unsigned int	I2C_ReadWordRegister (char reg)
unsigned int	I2C_ReadWordRegisterRS (char reg)
	Readm result from a word length register. More...
unsigned int	I2C_ReadWordPresetPointer (void)
	Read the value of a register that has already been select via the address pointer. More...
void	I2C_Close (void)
	Closes the I2C peripheral. More...

Detailed Description

I2C driver header.

Author

D.Qendri

Date

30 May 2015

Definition in file i2c.h.

Macro Definition Documentation

#define baudrate   100000

Definition at line 35 of file i2c.h.

Function Documentation

void I2C_Close

(

void

)

Closes the I2C peripheral.

Returns

none

Definition at line 174 of file i2c.c.

void I2C_Initialize

(

unsigned char

address

)

Initializes the I2C peripheral.

Parameters

address

Address the I2C peripheral is communicating with.

Returns

none

Definition at line 36 of file i2c.c.

void I2C_ReadByteArray	(	char	reg,
		char *	buffer,
		unsigned int	length
	)

Initializes the I2C peripheral.

Parameters

reg	Address of sensor register, address autoincrements
*buffer	Pointer to byte data buffer array
length	length of buffer array

Returns

none

Definition at line 138 of file i2c.c.

unsigned char I2C_ReadByteRegister

(

char

reg

)

Reads a byte from a register.

Parameters

reg	Address of sensor register.

Returns

val Byte value of register.

Definition at line 122 of file i2c.c.

unsigned int I2C_ReadWordPresetPointer

(

void

)

Read the value of a register that has already been select via the address pointer.

Returns

Data Value of preset register

Definition at line 161 of file i2c.c.

unsigned int I2C_ReadWordRegister

(

char

reg

)

unsigned int I2C_ReadWordRegisterRS

(

char

reg

)

Readm result from a word length register.

Parameters

reg	register to read from

Returns

val Word value of register

Definition at line 148 of file i2c.c.

void I2C_WriteByte

(

char

bdata

)

Writes a byte value to the I2C bus. This assumes the register pointer is preset.

Parameters

bdata

Send single byte to I2C bus

Returns

none

Definition at line 55 of file i2c.c.

void I2C_WriteByteArray	(	char	reg,
		char *	data,
		unsigned int	length
	)

Writes a buffer array to the registers.

Parameters

reg	Address of sensor register, address autoincrements
data	Pointer to byte data buffer array
length	length of buffer array

Returns

none

Definition at line 100 of file i2c.c.

void I2C_WriteByteRegister	(	unsigned char	reg,
		unsigned char	data
	)

Writes a byte value to a register address.

Parameters

reg	Address of sensor register.
data	Data byte to be written on register.

Returns

none

Definition at line 66 of file i2c.c.

void I2C_WriteWordRegister	(	unsigned char	reg,
		unsigned char *	data
	)

Writes a word value (16 bit) to a register address.

Parameters

reg	Address of sensor register.
data	Data word to be written on word size register.

Returns

none

Definition at line 82 of file i2c.c.