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標(biāo)題: 用定時(shí)器中斷編寫一個(gè)時(shí)鐘 [打印本頁(yè)]

作者: 飛翔的雨滴 時(shí)間: 2017-7-10 16:09
標(biāo)題: 用定時(shí)器中斷編寫一個(gè)時(shí)鐘
附上程序代碼和原理圖，程序正確，但是功能實(shí)現(xiàn)不起來(lái)
#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit wela=P2^7;
sbit dula=P2^6;
sbit key1=P3^4;
sbit key2=P3^5;
void display(uchar,uchar,uchar) ;
uchar shi,fen,miao,i;

uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

void delayms(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}
void main()
{
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
while(1)
{
   display(shi,fen,miao);
}
}
void display(uchar shi,fen,miao)
{
dula=1;
P0=0xfc;
dula=0;
P0=0xff;
wela=1;
P0=table[shi];
wela=0;

dula=1;
P0=0xf3;
dula=0;
P0=0xff;
wela=1;
P0=table[fen];
wela=0;

dula=1;
P0=0xcf;
dula=0;
P0=0xff;
wela=1;
P0=table[miao];
wela=0;

}
void T0_time() interrupt 1
   {
      TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
i++;
   if(i==20)
{
   i = 0;
   miao++;
   if(miao==60)
{
   miao = 0;
   fen++;
   if(fen==60)
{
   fen = 0;
   shi++;
   if(shi==24)
{
      shi = 0;

}
}

}
}
}

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