at24.h

AT24C02的驱动,IIC总线接口!加到自己的工程中就可以直接使用,已经调试通过.

#include<reg52.h>
#define unchar unsigned char
#define high 1
#define low  0
#define read24  0xA1
#define write24	0xA0
unchar Key_read(void);
void delay (unsigned int);
unchar read_AT (unchar);    //Read AT24C02
void write_AT (unchar,unchar);   //write AT24C02
void Setting(void);
void stop (void);
void start24(void);
void clock(void);
unchar readx(void);
void senddate(unchar);
void tunbcd(unchar);



sbit  AT_sda=P1^4;    //define AT24C02
sbit  AT_scl=P1^3;