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標題: 單片機+ds1307與數碼管的電子時鐘程序 [打印本頁]

作者: kiixing 時間: 2022-12-14 23:14
標題: 單片機+ds1307與數碼管的電子時鐘程序
#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit sda=P1^1;
sbit scl=P1^0;
void delay();
void delay1();
void start();
void stop();
uchar read(uchar address0,uchar wordaddress,uchar address1);
uchar year=0,month=0,date=0,hour=0,minute=0,second=0;
void main()
{

      while(1)
      {       second=read(0xd0,0x00,0xd1);
            minute=read(0xd0,0x01,0xd1);
            hour=read(0xd0,0x02,0xd1);
            date=read(0xd0,0x04,0xd1);
            month=read(0xd0,0x05,0xd1);
            year=read(0xd0,0x06,0xd1);
                     P0=hour;
                     P2=minute;
                     P3=second;
         delay1();
                     P0=year;
                     P2=month;
                     P3=date;
         delay1();
}
}
void delay1()
{
      uint i,j;
      for(i=0;i<1000;i++)
      for(j=0;j<125;j++);
      }
void start()
{
      scl=1;
      delay();
      sda=1;
      delay();
      sda=0;
      delay();
}
void delay()
{       uchar i=125;
      while(i>0)
      i--;
}

void stop()
{
      scl=1;
      delay();
      sda=0;
      delay();
      sda=1;
      delay();
}
uchar read(uchar address0,uchar wordaddress,uchar address1)
{
      uchar a,a0,i,n,data1;
      start();
      for(n=0;n<3;n++)
      {
            if(n==0)a0=address0;
      else if(n==1)a0=wordaddress;
      else if(n==2)
            {
            start();
            a0=address1;
            }
      for(i=0;i<8;i++)
            {
            scl=0;
            delay();
            a=a0;
            a=a&0x80;
            if(a==0x80)
                     sda=1;
            else
                     sda=0;
            delay();
            scl=1;
            delay();
            scl=0;
            delay();
            a0=a0<<1;
            }
      sda=1;
      delay();
      scl=1;
      delay();
      scl=0;
      }
      for(i=0;i<8;i++)
      {
            data1=data1<<1;
            sda=1;
            delay();
            scl=0;
            delay();
            scl=1;
            delay();
            if(sda==1)
                     data1|=0x01;
      }
      scl=0;
      delay();
      sda=1;
      delay();
      stop();
      return data1;
}

作者: songxia8013 時間: 2022-12-15 18:55
樓主，你的電路圖呢？沒電路圖，不知道你這咋接的啊

歡迎光臨 (http://www.zg4o1577.cn/bbs/)