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i2c.h

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/*! \file i2c.h \brief I2C interface using AVR Two-Wire Interface (TWI) hardware. */
//*****************************************************************************
//
// File Name    : 'i2c.h'
// Title        : I2C interface using AVR Two-Wire Interface (TWI) hardware
// Author       : Pascal Stang
// Created      : 2002.06.25
// Revised      : 2002.08.22
// Version      : 1.1
// Target MCU   : Atmel AVR series
// Editor Tabs  : 4
//
// This code is distributed under the GNU Public License
//      which can be found at http://www.gnu.org/licenses/gpl.txt
//
//*****************************************************************************

#ifndef I2C_H
#define I2C_H

#include "global.h"

// defines and constants
#define TWCR_CMD_MASK       0x0F
#define TWSR_STATUS_MASK    0xF8

// functions

// initialize I2C interface
void i2cInit(void);
void i2cSetBitrate(u16 bitrateKHz);

void i2cSetLocalDeviceAddr(u08 deviceAddr, u08 genCallEn);
void i2cSetReceiveHandler(void (*i2cRx_func)(u08 data));

// send I2C data to a device on the bus
void i2cSend(u08 deviceAddr, u08 length, u08 *data);
void i2cSendNI(u08 deviceAddr, u08 length, u08* data);

// receive I2C data from a device on the bus
void i2cReceive(u08 deviceAddr, u08 length, u08* data);
void i2cReceiveNI(u08 deviceAddr, u08 length, u08 *data);

#endif

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