ds1302_1.c

DS1302.c 也是自己写的!带有proteus图!!!

#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
sbit rs=P2^0;
sbit clk=P2^1;
sbit dat=P2^2;

delay(uchar time)
{uchar tm=0;
 for(tm=0;tm<time;tm++);
}
write(uchar DStemp)
{
uchar i,temp;
delay(50);
temp=DStemp;
for(i=0;i<8;i++)
{
 dat=temp&0x01;
 delay(10);
 clk=1;
 delay(10);
 clk=0;
 temp=temp>>1;
}
}
uchar read(void)
{
uchar i,temp;
delay(50);
for(i=0;i<8;i++)
{
 temp=temp<<1;
 if(dat==1)temp=temp+0x80;
 clk=1;
 delay(10);
 clk=0;
 delay(10);
}
return temp;
}




void main()
{
 uchar i;
// while(1)
// {
  clk=0;
  delay(10);
  rs=1;
  write(0x81);
  dat=1;
  i=read();
  rs=0;
  delay(10);
  clk=1;
  P1=i;	 
  while(1);
// }
}