简易时钟代码供参考

ID:430893 · 发表于 2018-11-21 22:53

#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit dula=P2^6;
sbit wela=P2^7;
sbit rs=P3^5;
sbit lcden=P3^4;
sbit s1=P3^0;
sbit s2=P3^1;
sbit s3=P3^2;
sbit rd=P3^7;
uchar count,s1num;
char miao,shi,fen;
uchar code table[]="  2018-11-20 MON";
uchar code table1[]=" 00:00:00";
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
  for(y=110;y>0;y--);
}
void write_com(uchar com)
{
rs=0;
lcden=0;
P0=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void write_date(uchar date)
{
rs=1;
lcden=0;
P0=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void init()
{
uchar num;
dula=0;
wela=0;
lcden=0;
// fen=59;
// miao=53;
// shi=23;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x80);
for(num=0;num<16;num++)
  {
write_date(table[num]);
delay(5);
  }
write_com(0x80+0x40);
for(num=0;num<12;num++)
  {
write_date(table1[num]);
delay(5);
  }
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void write_sfm(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_date(0x30+shi);
write_date(0x30+ge);
}
void keyscan()
{
rd=0;
if(s1==0)
{
  delay(5);
  if(s1==0)
  { s1num++;
while(!s1);
if(s1num==1)
{
TR0=0;
write_com(0x80+0x40+10);
write_com(0x0f);
}
}
if(s1num==2)
{
write_com(0x80+0x40+7);
}
if(s1num==3)
{
write_com(0x80+0x40+4);
}
if(s1num==4)
{
s1num=0;
write_com(0x0c);
TR0=1;
}

  }
  if(s1num!=0)
  {
if(s2==0)
{
delay(5);
if(s2==0)
{
   while(!s2);
   if(s1num==1)
   {
   miao++;
   if(miao==60)
   miao=0;
   write_sfm(10,miao);
   write_com(0x80+0x40+10);


   }
   if(s1num==2)
   {
   fen++;
   if(fen==60)
   fen=0;
   write_sfm(7,fen);
   write_com(0x80+0x40+7);
   }
   if(s1num==3)
   {
   shi++;
   if(shi==24)
   shi=0;
   write_sfm(4,shi);
   write_com(0x80+0x40+4);
   }
}
}
if(s3==0)
{
delay(5);
if(s3==0)
{
   while(!s3);
   if(s1num==1)
   {
   /* if(miao==0)
   {
   miao=59;
   write_sfm(10,miao);
   write_com(0x80+0x40+10);
   }*/
   miao--;
   if(miao==-1)
   miao=59;
   write_sfm(10,miao);
   write_com(0x80+0x40+10);
   }
   if(s1num==2)
   {
   fen--;
   if(fen==-1)
   fen=59;
   write_sfm(7,fen);
   write_com(0x80+0x40+7);
   }
   if(s1num==3)
   {
   shi--;
   if(shi==-1)
   shi=23;
   write_sfm(4,shi);
   write_com(0x80+0x40+4);
   }
}
}
  }
}
void main()
{
init();
while(1)
{
  keyscan();

}
// while(1);
}
void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
count++;
if(count==18)
  {
count=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
   fen=0;
   shi++;
   if(shi==24)
   {
   shi=0;
   }
   write_sfm(4,shi);
}
write_sfm(7,fen);
}
write_sfm(10,miao);

  }
}

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