mian.c

此程序实现IIC通信

#include <reg52.h>


sbit 	led0   = P0 ^ 0;
sbit 	led1   = P0 ^ 1;
sbit 	led2   = P0 ^ 2;
sbit 	led3   = P0 ^ 3;

extern void readbyteseq(unsigned char page_addr, unsigned char byte_address,unsigned char *ptr,unsigned char readlen);
extern void writebyteseq(unsigned char page_addr, unsigned char byte_address,unsigned char *ptr,unsigned char writelen);

void dellay(unsigned int  h)
{
  while(h--);	   //0.01MS
}
 main()
{ 
 unsigned char  aa[10]={1,2,3,4,5,6,7,8,9,0};
 unsigned char  bb[10]={0,0,0,0,0,0,0,0,0,0};
 
 while(1)
 {led0=0;led1=1;led2=1;led3=1;
 dellay(50000);
 dellay(50000);	  //延时约1S
 writebyteseq(0,0,aa,10);
 dellay(300);	  //短暂延时，等待写存储器完成
 readbyteseq(0,0,bb,10);
 dellay(300);	  //短暂延时，等待读存储器完成
 if((bb[0]==aa[0])&&(bb[5]==aa[5]))
 { led0=1;	led1=0;led2=0;led3=0;
   bb[0]=0;		  //清除读出数据，准备一次读数
   bb[5]=0;
 }
 dellay(50000);
 dellay(50000);
}

}