两个小时 我没调好这个程序 帮忙看一下大哥们 谢谢这是IIC总线程序 我相让LED灯亮 但是他从AT24C02读出来的不是我给他的数据 帮忙一下
这是程序代码
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
bit write=0;
sbit sda=P2^0;
sbit scl=P2^1;
uchar x,y,a,b,date;
void delay1(uchar z)
{
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void delay()
{;;}
void init()
{
scl=1;
sda=1;
}
void respons()
{
scl=1;
delay();
while((sda=1)&&(b<250))
b++;
delay();
scl=0;
}
void start()
{
sda=1;
delay();
scl=1;
delay();
sda=0;
delay();
}
void stop()
{
sda=0;
delay();
scl=1;
delay();
sda=1;
delay();
}
void write_byte(uchar date)
{
uchar a,temp;
temp=date;
for(a=0;a<8;a++)
{
temp=temp<<1;
scl=0;
delay();
sda=CY;
delay();
scl=1;
delay();
}
scl=0;
delay();
}
uchar read_byte(uchar date)
{
uchar k;
scl=0;
delay();
sda=1;
for(k=0;k<8;k++)
{
scl=1;
delay();
k=(k<<1)|sda;
delay();
scl=0;
}
delay();
return k;
}
void main()
{
init();
start();
write_byte(0xa0);
respons();
write_byte(5);
respons();
write_byte(0xaa);
respons();
stop();
delay1(10);
start();
write_byte(0xa0);
respons();
write_byte(5);
respons();
start();
write_byte(0xa1);
respons();
P1=read_byte();
respons();
stop();
while(1);
}
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