樓主可否幫我看下這個定時器延時問題出現在哪里#include<REG52.h>
#include<stdio.h>
#include<intrins.h>
sbit stratButton=P0^0;
sbit pauseButton=P0^1;
sbit resetButton=P0^2;
sbit exitButton=P0^3;
bit int0_Mark;
unsigned char HEXtoBCD(unsigned char hex)
{return((hex/10)*16+(hex%10));}
void main(void)
{unsigned char uc10ms=0,uc1s=0,uc60s=0;
TMOD=0x01;
IE=0x82;
while(1)
{exitButton=1;
uc10ms=0,uc1s=0,uc60s=0;
P1=HEXtoBCD(uc10ms);
P2=HEXtoBCD(uc1s);
P3=HEXtoBCD(uc60s);
while(stratButton);
while(!stratButton);
while(exitButton);
{int0_Mark=1;
TH0=0xdc; TL0=00;
TR0=1;
EA=1;
while(int0_Mark)
EA=0;
TR0=0;
uc10ms++;
if(uc10ms==100)
{uc10ms=0;uc1s++;}
P1=HEXtoBCD(uc10ms);
if(uc10ms==100)
{uc10ms=0;uc1s++;}
P1=HEXtoBCD(uc10ms);
if(uc1s==60)
{uc1s=0;uc60s++;}
P2=HEXtoBCD(uc1s);
if(uc60s==60)
uc60s=0;
P3=HEXtoBCD(uc60s);
if(!pauseButton)
{while(!pauseButton);
while(pauseButton)
{if(!resetButton)
{uc10ms=0,uc1s=0,uc60s=0;
P1=HEXtoBCD(uc10ms);
P2=HEXtoBCD(uc1s);
P3=HEXtoBCD(uc60s);
}
if(exitButton==0)
{exitButton=0;
break;
}
}
while(!pauseButton);
}
if(!resetButton)
{uc10ms=0,uc1s=0,uc60s=0;
P1=HEXtoBCD(uc10ms);
P2=HEXtoBCD(uc1s);
P3=HEXtoBCD(uc60s);
}
}
}
}
void timer0(void) interrupt 1
{EA=0;
int0_Mark=0;
TR0=0;
TH0=0xdc;TL0=00;
TR0=1;
EA=1;
} |
樓主: l5151
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