回复 #1楼 xlian
谢谢 不过这有点超过了我对C的学习范围 上段程序帮我解析一下 主要是不知道怎么解析 十六进制数
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uchar a,i,flag=0,date;
uchar b1,b2,b3,b4,b5,b6;
uint dat=0,buf1,buf2;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, //数码管编码
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delay(unsigned char i) //延时程序
{
uchar j,k;
for(j=i;j>0;j--)
for(k=125;k>0;k--);
}
void UART_init()
{
TMOD=0x20;
TH1=0xfd;
TL1=0xfd;
TR1=1;
SM0=0;
SM1=1;
REN=1;
EA=1;
ES=1;
PCON=0x80;
}
void display(uint date) //显示程序
{
b1=date/10000;
b2=date%10000/1000;
b3=date%1000/100;
b4=date%100/10;
b5=date%10;
P0=table[b1]; //1
dula=1;
dula=0;
P0=0xfe;
wela=1;
wela=0;
delay(5);
dula=0;
P0=table[b2]; //2
dula=1;
dula=0;
wela=0;
P0=0xfd;
wela=1;
wela=0;
delay(5);
dula=0;
P0=table[b3]; //3
dula=1;
dula=0;
wela=0;
P0=0xfb;
wela=1;
wela=0;
delay(5);
dula=0;
P0=table[b4]; //4
dula=1;
dula=0;
wela=0;
P0=0xf7;
wela=1;
wela=0;
delay(5);
dula=0;
P0=table[b5]; //5
dula=1;
dula=0;
wela=0;
P0=0xef;
wela=1;
wela=0;
delay(5);
}
void main() // 主程序
{
UART_init();
while(1)
{
for(i=0;i<20;i++)
{
display(dat);
}
}
}
void serial() interrupt 4
{
if(RI)
{
flag++;
if(flag==1) {buf1=SBUF;}
if(flag==2)
{
buf2=SBUF;
dat=(buf1*256+buf2);
flag=0;
}
RI=0;
}
}
