本文件包含C语言程序以及仿真原理图！
程序：
#include<>
#include<>
#define uchar unsigned char
#define uint unsigned int
sbit sclk=P3^0;
sbit dio=P3^1;
sbit ce=P3^2;
sbit s0=P2^0;
sbit s1=P2^1;
uchar d[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; uchar a[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
uchar shi,fen,miao;
uint x=1;
void show(uchar shi,uchar fen,uchar miao);
void delay(uint z)
{
uint x,y;
for(y=z;y>0;y--)
for(x=110;x>0;x--);
}
void display(uchar shu,uchar wei)
{
s0=0;s1=0;
P1=0XFF;
P1=a[wei];
s1=1;
s1=0;
if(x%2==0)//小数点显示判定
{P1=d[shu]&0x7f;
x++;
}
else
{P1=d[shu];
x++;
}
if(x==6) x=0;
delay(2);
s0=0;
}
void write(uchar add,uchar date) {
uchar temp,t;
ce=0;
sclk=0;
ce=1;
temp=add;
for(t=0;t<8;t++)//地址控制
{
if((temp&0x01)==1)
{
dio=1;
else
dio=0;
sclk=1;
delay(1);
sclk=0;
temp=temp>>1;
}
temp=date;
for(t=8;t>0;t--) //写数据
{
if((temp&0x01)==1)
{
dio=1;
}
else
dio=0;
sclk=1;
delay(1);
sclk=0;
temp=temp>>1;
}
ce=0;
}
uchar read(uchar add)
{
uchar temp,t;
sclk=0;
ce=1;
temp=add;
for(t=0;t<8;t++)
{
if((temp&0x01)==1)
dio=1;
else
dio=0;
sclk=1;
sclk=0;
temp>>=1;
}
temp=0;
for(t=0;t<7;t++)
{
if(dio==1)
temp=temp|0x80;
else
temp=temp&0x7f;
sclk=1;
sclk=0;
temp>>=1;
}
return temp;
}
{
write(0x8e,0x00);//写保护
write(0x80,0x00); //写秒
write(0x82,0x43);//写分
write(0x84,0x15); //写时
write(0x86,0x17);
write(0x88,0x7);
write(0x8c,0x11);
write(0x8e,0x80);
}
void main()
{
chu();//设定初始时间
while(1)
{
shi=read(0x85);//读出时间
fen=read(0x83);
miao=read(0x81);
show(shi,fen,miao);//显示时间}
}
void show(uchar shi,uchar fen,uchar miao) {
display(shi>>4,0);
display(shi&0x0f,1);
display(fen>>4,2);
display(fen&0x0f,3);
display(miao>>4,4);
display(miao&0x0f,5); }
