代碼如下
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit dula=P2^6;
sbit wela=P2^7;
uchar flag,a,b,c,d,e,f,num;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void delay(uint xms) //???????
{
uint i,j;
for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}
void display(uchar a,b,c,d,e,f) //????????????
{
a=num/100000;
b=num%100000/10000;
c=num%10000/1000;
d=num%1000/100;
e=num%100/10;
f=num%10;
dula=1;
P0=table[a];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(5);
dula=1;
P0=table[b];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(5);
dula=1;
P0=table[c];
dula=0;
P0=0xff;
wela=1;
P0=0xfb;
wela=0;
delay(5);
dula=1;
P0=table[d];
dula=0;
P0=0xff;
wela=1;
P0=0xf7;
wela=0;
delay(1);
dula=1;
P0=table[e];
dula=0;
P0=0xff;
wela=1;
P0=0xef;
wela=0;
delay(1);
dula=1;
P0=table[f];
dula=0;
P0=0xff;
wela=1;
P0=0xdf;
wela=0;
delay(1);
}
void ser() interrupt 4 //?????ж?
{
RI = 0;
num = SBUF; //?????????????????
flag=1;
}
void init()
{
SCON=0x50; //?趨??????????
PCON=0x00; //???????????
TMOD=0x20; //?????1??????8λ?????????, ?????????????
EA=1;
ES = 1; //????????ж?
TL1=0xfd;
TH1=0xfd; //??????9600
TR1=1;
}
void main()
{
wela=1;
P0=0x7f;
wela=0;
init();
while(1)
{
display(num) ;
if(flag==1) //????ж?
{
SBUF=num;
while(!TI);
TI=0;
flag=0; //??????
}
}
}
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