akutester/soft/i2c.h

#ifndef I2C_H
#define I2C_H

/**** I2C bitbanging support ****/

// clock line port
//#define SCLPORT	PORTB	// i2c clock port
#define SCLDDR	DDRC	// i2c clock port direction
#define SCLPIN PINC
// data line port
//#define SDAPORT	PORTB	// i2c data port
#define SDADDR	DDRC	// i2c data port direction
#define SDAPIN	PINC	// i2c data port input
// pin assignments
#define SCL		_BV(PC0)	// i2c clock pin
#define SDA		_BV(PC1)	// i2c data pin

// defines and constants
#define READ		0x01	// I2C READ bit

// functions

// initialize I2C interface pins
//void i2cInit(void);

// send I2C data to <device> register 
void i2cSend(unsigned char reg, unsigned char length, unsigned char *data, unsigned char device);

// receive I2C data from <device> register 
void i2cReceive(unsigned char reg, unsigned char length, unsigned char *data, unsigned char device);

unsigned char i2cPutbyte(unsigned char b);
unsigned char i2cGetbyte(unsigned char notlast);

void istart(void);
void istop(void);

#endif