单片机串口输出六位数数码管显示 -

标题: 单片机串口输出六位数数码管显示 [打印本页]

作者: Kronacy 时间: 2019-11-23 13:19
标题: 单片机串口输出六位数数码管显示
代码如下
#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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