twi.h

用AVR M8控制PT2134音频芯片的程序,显示是LCM2402,还带有有红外遥控功能.

#ifndef __TWI_H__
#define __TWI_H__


#include <avr/io.h>


#define uchar unsigned char
#define SET_SCL DDRC&=~(1<<PC5)
#define CLR_SCL DDRC|=(1<<PC5)
#define SET_SDA DDRC&=~(1<<PC4)
#define CLR_SDA DDRC|=(1<<PC4)

void i2c_start();
void i2c_stop();
void i2c_ack();
void i2c_nack();
write_byte(uchar c);
//uchar read_byte();
//uchar write_nbyte(uchar slave,uchar addr,uchar *ss,uchar num);
//uchar read_nbyte(uchar slave,uchar addr,uchar *s,uchar num);
uchar write_nbyte1(uchar slave,uchar dat);



#endif