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標(biāo)題: 基于89C51的交通燈設(shè)計(jì) [打印本頁(yè)]

作者: WSYW 時(shí)間: 2021-11-26 15:35
標(biāo)題: 基于89C51的交通燈設(shè)計(jì)

#include<reg51.h>
#include <absacc.h>
#define PORT XBYTE [0x7fff]
unsigned char code Tab[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //0~9段碼
unsigned char cf[4]={1,2,3,4};
sbit sw=P3^0;//數(shù)碼管動(dòng)態(tài)顯示的位選定義
sbit gw=P3^1;
void disp(unsigned char i)
{
PORT=~i;
}

void delay(unsigned char j)    //0.01s*j
{
unsigned char m,n;
for(;j>0;j--)
{
      for(m=0;m<20;m++)
   for(n=0;n<250;n++);
}

}
void bcdm(unsigned char q)  //數(shù)碼管顯示的十位和個(gè)位
{
cf[0]=q/10;
cf[1]=q%10;
}

void smgdjs(unsigned char q)  //數(shù)碼管倒計(jì)時(shí)
{
unsigned char a;
    while(q)
{
bcdm(q);
   for(a=0;a<50;a++)
   {
sw=0;gw=1;
P1=Tab[cf[0]];
delay(1);
sw=1;gw=0;
   P1=Tab[cf[1]];
delay(1);
   }

q--;

}
}

void hds(void) //黃燈閃爍
{
unsigned char k,a,l;
for(k=5;k>0;k--)
{
   bcdm(k);
   disp(0x12);
   for(a=0;a<50;a++)
   {
   sw=0;gw=1;
   P1=Tab[cf[0]];
   delay(1);
   sw=1;gw=0;
   P1=Tab[cf[1]];
   delay(1);
   }
disp(0x0);
for(a=0;a<50;a++)
   {
   sw=0;gw=1;
   P1=Tab[cf[0]];
   delay(1);
   sw=1;gw=0;
   P1=Tab[cf[1]];
   delay(1);
   }

}
}

void main(void)
{
unsigned char p;
disp(0x21);
delay(10);
while(1)
{
     disp(0x09);
p=10;
smgdjs(p);
hds();
disp(0x24);
     smgdjs(p);
// delay(50);
hds();

}

}

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