lcd.c

CLOCK 网上看到的电子钟 源码 附图

#include<stdio.h>
//#include<absacc.h>
#include<reg51.h>
sbit rs=P1^7;
sbit rw=P1^6;
sbit en=P1^5;
int i,k=0;
int s=0,ts=0,m=0,tm=0,h=0,th=0;
unsigned char inst[]={0x38,0x01,0x06,0x0c};
unsigned char coded[]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39};
void delay(int i)
{ while(i>0)i--;}
void writeinstruction(unsigned char instructiondata)
{ rs=0;
  rw=0;
  en=1;
  P0=instructiondata;
  delay(2);
  en=0;
}
void initlcd()
{   writeinstruction(inst[0]);
    writeinstruction(inst[1]);
    writeinstruction(inst[2]);
    writeinstruction(inst[3]);
}
void readdata(unsigned char readdata)
{ rs=1;
  rw=0;
  en=1;
  P0=readdata;
  delay(2);
  en=0;
}
void display()
{  writeinstruction(0x0C);
   writeinstruction(0x8B);
   readdata(coded[s]);
   s++;
  
   writeinstruction(0x0C);
   writeinstruction(0x8A);
   readdata(coded[ts]);
  if(s==10)
   {s=0;ts++;}
   writeinstruction(0x0C);
   writeinstruction(0x89);
   readdata(0x3A);
   writeinstruction(0x0C);
   writeinstruction(0x88);
   readdata(coded[m]);
   if(ts==6)
   {ts=0;m++;}
   writeinstruction(0x0C);
   writeinstruction(0x87);
   readdata(coded[tm]);
   if(m==10)
   {m=0;tm++;}
    writeinstruction(0x0C);
   writeinstruction(0x86);
   readdata(0x3A);
   writeinstruction(0x0C);
   writeinstruction(0x85);
   readdata(coded[h]);
   if(tm==6)
   {tm=0;h++;}
   writeinstruction(0x0C);
   writeinstruction(0x84);
   readdata(coded[th]);
   if(h==10)
   {h=0;th++;}
   if(th==2)
   {if(h==4)
    {s=ts=m=tm=h=th=0;  }
   }
   writeinstruction(0x0C);
   writeinstruction(0xC6);
   readdata(0x54);
   writeinstruction(0x0C);
   writeinstruction(0xC7);
   readdata(0x69);
   writeinstruction(0x0C);
   writeinstruction(0xC8);
   readdata(0x6D);
   writeinstruction(0x0C);
   writeinstruction(0xC9);
   readdata(0x65);
}
void main()
{ delay(100);
  initlcd();
  IE=0x88;
  TCON=0x00;
  TMOD=0x10;
  TH1=(65536-50000)/256;
  TL1=(65536-50000)%256;
  TR1=1;
  while(1);
}
void timer1(void)interrupt 4 using 1
{ k++;
  if(k==14)
  {k=0;display();}
}