定时中断程序

ID:59583 · 发表于 2014-3-24 15:08

#include<reg51.h>
#define DK0 P0
#define uint unsigned int
#define uchar unsigned char
sbit DUAN=P2^0;
sbit WEI=P2^1;
uint i=0;
uint s=0;
uint QQ;
void DELAY (uint t);
uchar code TABLE0[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar code TABLE1[]={0x00};
void main(void)
{
  DUAN=1;
  DK0=TABLE0[i];
  DUAN=0;
//========================
  WEI=1;
  DK0=TABLE1[s];
  WEI=0;
TMOD=0X01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
while(1)
  {
// i=0;
  if (QQ==120)
{
//i=0;
QQ=0;
i++;
  DUAN=1;
  DK0=TABLE0[i];
  DUAN=0;
//========================
  WEI=1;
  DK0=TABLE1[s];
  WEI=0;
//=============================
  DELAY(1);
if(i==9)
   {
i=0;
   }
}
}
}
void delay(uint t )
{
uint w,e,r;
for(w=0;w<t;w++)
for(e=0;e<400;e++)
for(r=0;r<300;r++);
}
void ext0()interrupt 1
{
TH0=(65536-10000)/256;
TL0=(65536-10000)%256;
QQ++;
}

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