TWI_master.h

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/* This file has been prepared for Doxygen automatic documentation generation.*/
#ifndef TWI_MASTER_H_
#define TWI_MASTER_H_

#include "ioavr.h"
#include "inavr.h"

#define SCL PC1

#define SDA PC4

#define PORT_SCL PORTC

#define DDR_SCL     DDRC

#define PIN_SCL PINC

#define PORT_SDA PORTC

#define DDR_SDA     DDRC

#define PIN_SDA PINC

#define SLAVE_ADDRESS 0xA0

#define READ_SDA() (PIN_SDA & (1 << SDA))
#define SET_SDA_OUT() DDR_SDA |= (1 << SDA)
#define SET_SDA_IN() DDR_SDA &= ~(1 << SDA)
#define READ_SCL() (PIN_SCL & (1 << SCL))?1:0

#define WRITE 0x0
#define READ 0x1

#define DELAY 2

#define SCL_SDA_DELAY 1

void twi_disable();
void twi_init();
void toggle_scl();
void write_scl(char x);
char twi_start_cond(void);
char send_slave_address(unsigned char read);
char write_data(unsigned char* data, char bytes);
char i2c_write_byte(unsigned char byte);
char read_bytes(unsigned char* data, char bytes);
char i2c_read_byte(unsigned char* data, unsigned char bytes, unsigned char index);
void write_sda( char x);



#endif /* TWI_MASTER_H_ */