51单片机DS1302可调电子时钟proteus仿真一直显示85.85.85.

最新推荐文章于 2023-11-25 22:11:50 发布

Hygge443

最新推荐文章于 2023-11-25 22:11:50 发布

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文章标签： proteus 51单片机

本文链接：https://blog.youkuaiyun.com/weixin_67419726/article/details/132925116

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本文详细描述了如何使用C语言在嵌入式系统中操作DS1302实时时钟，包括数据输入输出函数、时间获取与显示以及按键操作的处理。

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程序如下：

#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define unit unsigned int
#define anod_combit P2
#define seg7 P1
sbit DS1302_CLK = P3^2;
sbit DS1302_IO = P3^3;
sbit DS1302_RST = P3^4;
sbit ACC0 = ACC^0;
sbit ACC7 = ACC^7;
sbit Tiaoshi=P3^7;
sbit Inck=P3^6;
unit count;
uchar temp,readdata;
bit Inck_flag=0x20;

typedef struct
{
uchar Second;
   uchar Minute;
   uchar Hour;
   uchar TimeStr[6];
}SYSTEMTIME;
SYSTEMTIME CurrentTime;
#define DS1302_SECOND 0x80
#define DS1302_MINUTE 0x82
#define DS1302_HOUR 0x84

void mdelay(unit count)
{
uchar i,j;
   for(i=0;i<count;i++)
   {
   for(j=0;j<106;j++);
   }

}

void DS1302InputByte(uchar d)
{
uchar i;
   ACC = d;
   for(i=8;i>0;i--)
   { DS1302_IO = ACC0;
   DS1302_CLK = 1;
       DS1302_CLK = 0;
       ACC = ACC >>1;
       }

}

uchar DS1302OutputByte(void)
{
uchar i;
   ACC=0;
   for(i=8;i>0;i--)
   { ACC = ACC >>1;
   ACC7 = DS1302_IO;
       DS1302_CLK = 1;
       DS1302_CLK = 0;
   }
   return(ACC);
}

void Write1302(uchar ucAddr,uchar ucDa)
{ DS1302_RST = 0;
DS1302_CLK = 0;
DS1302_RST = 1;
DS1302InputByte(ucAddr);
DS1302InputByte(ucDa);
DS1302_CLK = 1;
DS1302_RST = 0;
}

uchar Read1302(uchar ucAddr)
{ uchar ucData;
DS1302_RST = 0;
DS1302_CLK = 0;
DS1302_RST = 1;
   DS1302InputByte(ucAddr|0x01);
   ucData = DS1302OutputByte();
   DS1302_CLK = 1;
DS1302_RST = 0;
   return(ucData);
}

void DS1302_GetTime(SYSTEMTIME *Time)
{ uchar ReadValue;
ReadValue = Read1302(DS1302_SECOND);
   Time->Second = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
   ReadValue = Read1302(DS1302_MINUTE);
   Time->Minute = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
   ReadValue = Read1302(DS1302_HOUR);
   Time->Hour = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
}

void TimeToStr(SYSTEMTIME *Time)
{
Time->TimeStr[0] = Time->Hour/10;
   Time->TimeStr[1] = Time->Hour%10;

   Time->TimeStr[2] = Time->Minute/10;
   Time->TimeStr[3] = Time->Minute%10;

   Time->TimeStr[4] = Time->Second/10;
   Time->TimeStr[5] = Time->Second%10;
}

void Dis( SYSTEMTIME *Time )
{ uchar disbit,shitfb;
DS1302_GetTime(Time);
   TimeToStr(Time);
   disbit=1;
switch(count)
{ case 0:
for(shitfb=0;shitfb<6;shitfb++)
   { _nop_(); _nop_();
   seg7=Time->TimeStr[shitfb];
           anod_combit=_crol_(disbit,shitfb);
           mdelay(6);
           anod_combit =0;
   }
   break;
   case 1:
       for(shitfb=0;shitfb<2;shitfb++)
       { _nop_(); _nop_();
   seg7=Time->TimeStr[shitfb];
           anod_combit=_crol_(disbit,shitfb);
           mdelay(6);
           anod_combit =0;
   }break;
   case 2:
       for(shitfb=2;shitfb<4;shitfb++)
       { _nop_(); _nop_();
   seg7=Time->TimeStr[shitfb];
           anod_combit=_crol_(disbit,shitfb);
           mdelay(6);
           anod_combit =0;
   }break;
   case 3:
       for(shitfb=4;shitfb<6;shitfb++)
       { _nop_(); _nop_();
   seg7=Time->TimeStr[shitfb];
           anod_combit=_crol_(disbit,shitfb);
           mdelay(6);
           anod_combit =0;
   }break;
   default:break;
}
}

void Setkey()
{ if(Tiaoshi==0)
{ mdelay(8);
       if(Tiaoshi==0)
{ count=count+1;
           if (count==4)
               { count=0;
               readdata=(Read1302(0x80))&0X7F;
                   Write1302(0x80,readdata);
                   Write1302(0x8e,0x80);
               }
               while(Tiaoshi==0);
               }
       }
}

void Inckey()
{ if(Inck==0)
{ mdelay(8);
switch(count)
   { case 1:
   temp=Read1302(DS1302_HOUR);
       temp=((temp&0x70)>>4)*10+(temp&0x0f);
       temp=temp+1;
       if(temp>=24)
       temp=0;
       Inck_flag=1;
       break;
       case 2:
   temp=Read1302(DS1302_MINUTE);
       temp=((temp&0x70)>>4)*10+(temp&0x0f);
       temp=temp+1;
       Inck_flag=1;
       if(temp>=60)
       temp=0;
       break;
       case 3:
   temp=Read1302(DS1302_SECOND);
       temp=((temp&0x70)>>4)*10+(temp&0x0f);
       temp=temp+1;
       Inck_flag=1;
       if(temp>=60)
       temp=0;
       break;
       default: Inck_flag=0; break;
}
while(Inck==0);
}
}

void Keydone()
{ Write1302(0x8e,0x00);
readdata=Read1302(0x80);
   Write1302(0x80,readdata|0x80);
switch(count)
{case 1:do
   { Inckey();
if(Inck_flag==1)
{ temp=(temp/10)<<4|temp%10;
           Write1302(0x84,temp);
               Inck_flag=0;
           }
Dis(&CurrentTime);
   }while(count==2);break;
   case 2:do
   { Inckey();
if(Inck_flag==1)
{ temp=(temp/10)<<4|temp%10;
           Write1302(0x82,temp);
               Inck_flag=0;
           }
           Dis(&CurrentTime);
}while(count==3);break;
   case 3:do
   { Inckey();
if(Inck_flag==1)
{ temp=(temp/10)<<4|temp%10;
           Write1302(0x80,temp|0x80);
               Inck_flag=0;
           }
           Dis(&CurrentTime);
}while(count==4);break;
default:break;
}
}
main()
{ Inck_flag=0;
mdelay(100);
   readdata=Read1302(0x80);
   Write1302(0x80,readdata&0x7f);
   while(1)
   { DS1302_GetTime(&CurrentTime);
   TimeToStr(&CurrentTime);
   Dis(&CurrentTime);
       Setkey();
       if(count!=0)
       Keydone();
   }

}