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標題: 用數碼管顯示一個流水燈 [打印本頁]

作者: lids 時間: 2016-9-27 10:11
標題: 用數碼管顯示一個流水燈

/*數碼管動態顯示,延時0.5s數碼管1到8顯示一個口形流水燈，跑4圈，停下顯示口，如此循環。
程序在實驗板上通過。
*/

#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit dula=P2^6;
sbit wela=P2^7;
uint aa;
uchar z;

void delayms(uint xms)
{
uint i;
uchar j;
for(i=xms;i>0;i--)
   for(j=110;j>0;j--);
}

void main()
{
while(1)
{

   for(z=0;z<4;z++)
   {
   dula=1; //1
   P0=0x01;    //送段選數據
   dula=0;
   P0=0xff;    //送位選數據前關閉所有顯示，防止打開位選鎖存器時
   wela=1;    //原來段選數據通過位選鎖存器造成混亂
   P0=0xfe;    //送位選數據
   wela=0;
   delayms(500);    //延時

   dula=1; //2
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfd;
   wela=0;
   delayms(500);

   dula=1; //3
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfb;
   wela=0;
   delayms(500);

   dula=1; //4
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xf7;
   wela=0;
   delayms(500);

   dula=1;    //5
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xef;
   wela=0;
   delayms(500);

   dula=1;    //6
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xdf;
   wela=0;
   delayms(500);

   dula=1;    //7
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xbf;
   wela=0;
   delayms(500);

   dula=1;    //8
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0x7f;
   wela=0;
   delayms(500);

   dula=1;
   P0=0x02;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0x7f;
   wela=0;
   delayms(500);

   dula=1;
   P0=0x04;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0x7f;
   wela=0;
   delayms(500);

   dula=1;
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0x7f;
   wela=0;
   delayms(500);

   dula=1; //7
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xbf;
   wela=0;
   delayms(500);

   dula=1;    //6
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xdf;
   wela=0;
   delayms(500);

   dula=1;    //5
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xef;
   wela=0;
   delayms(500);

   dula=1; //4
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xf7;
   wela=0;
   delayms(500);

   dula=1; //3
   P0=0x8;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfb;
   wela=0;
   delayms(500);

dula=1; //2
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfd;
   wela=0;
   delayms(500);

   dula=1; //1
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfe;
   wela=0;
   delayms(500);

   dula=1; //1
   P0=0x10;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfe;
   wela=0;
   delayms(500);

   dula=1; //1
   P0=0x20;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfe;
   wela=0;
   delayms(500);
   }


   for(aa=0;aa<200;aa++)
   {
   dula=1; //1
   P0=0x01;    //送段選數據
   dula=0;
   P0=0xff;    //送位選數據前關閉所有顯示，防止打開位選鎖存器時
   wela=1;    //原來段選數據通過位選鎖存器造成混亂
   P0=0xfe;    //送位選數據
   wela=0;
   delayms(5);    //延時

   dula=1; //2
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfd;
   wela=0;
   delayms(5);

   dula=1; //3
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfb;
   wela=0;
   delayms(5);

   dula=1; //4
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xf7;
   wela=0;
   delayms(5);

   dula=1;    //5
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xef;
   wela=0;
   delayms(5);

   dula=1;    //6
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xdf;
   wela=0;
   delayms(5);

   dula=1;    //7
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xbf;
   wela=0;
   delayms(5);

   dula=1;    //8
   P0=0x01;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0x7f;
   wela=0;
   delayms(5);

   dula=1;
   P0=0x02;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0x7f;
   wela=0;
   delayms(5);

   dula=1;
   P0=0x04;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0x7f;
   wela=0;
   delayms(5);

   dula=1;
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0x7f;
   wela=0;
   delayms(5);

   dula=1; //7
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xbf;
   wela=0;
   delayms(5);

   dula=1;    //6
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xdf;
   wela=0;
   delayms(5);

   dula=1;    //5
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xef;
   wela=0;
   delayms(5);

   dula=1; //4
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xf7;
   wela=0;
   delayms(5);

   dula=1; //3
   P0=0x8;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfb;
   wela=0;
   delayms(5);

dula=1; //2
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfd;
   wela=0;
   delayms(5);

   dula=1; //1
   P0=0x08;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfe;
   wela=0;
   delayms(5);

   dula=1; //1
   P0=0x10;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfe;
   wela=0;
   delayms(5);

   dula=1; //1
   P0=0x20;
   dula=0;
   P0=0xff;
   wela=1;
   P0=0xfe;
   wela=0;
   delayms(5);
   }
}
}

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