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/*-------------------------------------------------------
要求：利用數(shù)碼管，定時器等模塊，做出一個秒表，樣式00：00.0
------------------------------------------------*/
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar a,n,num1,num2,f_shi,f_ge,m_shi,m_ge,msec;
char f_num,m_num;
void init();
void delay(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}
void init()
{
TMOD=0x11;
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
EA=1;
ET0=1;
TR0=1;
ET1=1;
TR1=1;
}
void display(uchar f_shi,f_ge,m_shi,m_ge)
{
P1=0x00;
P2=table[f_shi];
delay(5);
P1=0x01;
P2=table[f_ge];
delay(5);
P1=0x02;
P2=0x40;
delay(5);
P1=0x03;
P2=table[m_shi];
delay(5);
P1=0x04;
P2=table[m_ge]|0x80;
delay(5);
P1=0x05;
P2=table[msec];
delay(5);
}
void main()
{
init();
f_num=00;
m_num=00;
while(1)
{
if(num1==20)
{
num1=0;
if(m_num==59)
{
m_num=-1;
if(f_num==59)
{
f_num=-1;
}
f_num++;
}
m_num++;
}
m_shi=m_num/10;
m_ge =m_num%10;
f_shi=f_num/10;
f_ge =f_num%10;
display(uchar f_shi,f_ge,m_shi,m_ge);
}
}
void T0_time() interrupt 1
{
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
num1++;
}
void T1_time() interrupt 3
{
TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
num2++;
if(num2==12)
{
num2=0;
n++;
if(n==60)
{
n=0;
}
msec=n%10;
}
}
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