i2c_drvr_4313.h File Reference

Low level I2C definitions for the ATtiny4313. More...

#include "global_defines.h"
#include <stdint.h>

Go to the source code of this file.

Macros
#define	I2C_START_RETRY   5
	defines how many times we should retry to start communication More...
#define	I2C_BITBANG
	Don't use I2C hardware modules, but rather manual port manipulation. More...

Functions
retval_t	i2c_drvr_init (void)
retval_t	i2c_drvr_start (uint8_t byte_to_tx)
retval_t	i2c_drvr_end (void)
retval_t	i2c_drvr_write_byte (uint8_t byte_to_tx)
retval_t	i2c_drvr_read_byte (uint8_t *byte_read_ptr, uint8_t ack)
void	toggle_scl (void)

Detailed Description

Low level I2C definitions for the ATtiny4313.

Macro Definition Documentation

I2C_BITBANG

#define I2C_BITBANG

Don't use I2C hardware modules, but rather manual port manipulation.

I2C_START_RETRY

#define I2C_START_RETRY   5

defines how many times we should retry to start communication

Function Documentation

i2c_drvr_end()

retval_t i2c_drvr_end

(

void

)

Creates an end condition and returns if it was successful.

Parameters

[out]

retval

(retval_t): Returns if the end condition worked.

i2c_drvr_init()

retval_t i2c_drvr_init

(

void

)

Initializes the I2C lines.

Parameters

[out]

retval

(retval_t): Returns if the initialization worked.

i2c_drvr_read_byte()

retval_t i2c_drvr_read_byte	(	uint8_t *	byte_read_ptr,
		uint8_t	ack
	)

Reads a byte of information to from the I2C line.

Parameters

[in]	byte_read_ptr	(uint8_t *): Location to return the read back value.
[in]	ack	(uint8_t): Whether or not to acknowledge the byte.
[out]	retval	(retval_t): Returns if the read was successful.

i2c_drvr_start()

retval_t i2c_drvr_start

(

uint8_t

addr_with_mode

)

Creates a start condition, addresses the chip and returns if it was successful.

Parameters

[in]	addr_with_mode	(uint8_t): Address of the chip with mode set.
[out]	retval	(retval_t): Returns if the start condition worked.

i2c_drvr_write_byte()

retval_t i2c_drvr_write_byte

(

uint8_t

byte_to_tx

)

Writes a byte of information to the I2C line.

Parameters

[in]	byte_to_tx	(uint8_t): Byte to transmit.
[out]	retval	(retval_t): Returns if the byte write was acknowledged.

toggle_scl()

void toggle_scl

(

void

)