i2c.c File Reference

#include "i2c.h"
#include <util/delay_basic.h>
#include <util/delay.h>

Functions
void	i2c_timerproc (void)
uint8_t	read_i2c_device (uint8_t address, uint8_t rbytes, uint8_t *rdata)
	Read 1 or more bytes from an I2C device to memory.
uint8_t	write_i2c_device (uint8_t address, uint8_t wbytes, uint8_t *wdata)
	Write 1 or more bytes to an I2C device from memory.
uint8_t	write_read_i2c_device (uint8_t address, uint8_t wbytes, uint8_t *wdata, uint8_t rbytes, uint8_t *rdata)
	Write 1 or more bytes to an I2C device followed by a read without releasing the bus.

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Function Documentation

void i2c_timerproc

(

void

)

uint8_t read_i2c_device	(	uint8_t	address,
		uint8_t	bytes,
		uint8_t *	rdata
	)

Read 1 or more bytes from an I2C device to memory.

Parameters:

	address	Address if I2C device. The bottom bit is set to enforce an I2C read.
	bytes	Number of bytes to be returned.
	*rdata	Pointer to location to store values returned.

Returns:

returns error code generated from I2C transaction, or 0 for success

uint8_t write_i2c_device	(	uint8_t	address,
		uint8_t	bytes,
		uint8_t *	wdata
	)

Write 1 or more bytes to an I2C device from memory.

Parameters:

	address	Address if I2C device. The bottom bit is cleared to enforce an I2C write.
	bytes	Number of data bytes to be sent.
	*wdata	Pointer to location in memory of first byte of set of data.

Returns:

returns error code generated from I2C transaction, or 0 for success

uint8_t write_read_i2c_device	(	uint8_t	address,
		uint8_t	wbytes,
		uint8_t *	wdata,
		uint8_t	rbytes,
		uint8_t *	rdata
	)

Write 1 or more bytes to an I2C device followed by a read without releasing the bus.

Parameters:

	address	Address if I2C device. The bottom bit is manipulated as appropriate for R/W
	wbytes	Number of bytes to write.
	*wdata	Pointer to location in memory of first byte to write.
	rbytes	Number of bytes to read.
	*rdata	Pointer to location in memory of first byte of set of data.

Returns:

returns error code generated from I2C transaction, or 0 for success