实验8 LCD8*8点阵

1.控制点阵红绿交替显示，分别从上到下，从左到右循环闪烁三次

接线：

P0接J12、P1接J20、P2接J19

/**

1.控制点阵红绿交替显示，分别从上到下，从左到右循环闪烁三次

**/

 

#include <REG51.H>

 

unsignedchar code table_LeftRight[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};

unsignedchar code table_TopBottom[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};

enum DisplayDirecte{

    Left2Right,

    Right2Left,

    Top2Bottom,

    Bottom2Top

};

 

void delay(void)

{

    unsignedchar i,j,k;

 

    for(k=10;k>0;k--)

    for(i=20;i>0;i--)

    for(j=248;j>0;j--);

 

}

 

/***********************************************************

    显示的规则

***********************************************************/

void DisplayRule(enum DisplayDirecte displayDirecte,unsignedchar index){

    switch(displayDirecte){

       case Left2Right:

           P2=table_LeftRight[index];

           P0=0xff;

           P1=0xff;

       break;

 

       case Right2Left:

           P1=table_LeftRight[7-index];

           P0=0xff;

           P2=0xff;

       break;

      

       case Top2Bottom:

           P2=0x00;

           P1=0xff;

           P0=table_TopBottom[7-index];

       break;

      

       case Bottom2Top:

           P1=0x00;

           P2=0xff;

           P0=table_TopBottom[index];

       break;

    }

}

/***********************************************************

    显示3次

***********************************************************/

void Display3Time(enum DisplayDirecte displayDirecte){

    unsignedchar i,RepeatTime;

    for(RepeatTime=0;RepeatTime<3;RepeatTime++)//控制重复的次数

    {

       for(i=0;i<8;i++)                  

       {

           DisplayRule(displayDirecte,i);

           delay();

       }

    }

}

void main(void)

{

    while(1)

    {

      

       Display3Time(Left2Right);

       Display3Time(Right2Left);

       Display3Time(Top2Bottom);

       Display3Time(Bottom2Top);

   }

}

 

2.自行编码，控制LCD显示0~F或一些简单汉字(红绿交替显示)

3./*****************************************************************************************

4.2.自行编码，控制LCD显示0~F或一些简单汉字(红绿交替显示)     

5.******************************************************************************************/

#include<reg51.h>

#define Lenth 19

unsignedchar code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};//列选通

 

unsignedchar code digittab[Lenth][8]={

 

{0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00},//0

 

{0x00,0x00,0x00,0x00,0x21,0x7f,0x01,0x00},//1

 

{0x00,0x00,0x27,0x45,0x45,0x45,0x39,0x00},//2

 

{0x00,0x00,0x22,0x49,0x49,0x49,0x36,0x00},//3

 

{0x00,0x00,0x0c,0x14,0x24,0x7f,0x04,0x00},//4

 

{0x00,0x00,0x72,0x51,0x51,0x51,0x4e,0x00},//5

 

{0x00,0x00,0x3e,0x49,0x49,0x49,0x26,0x00},//6

 

{0x00,0x00,0x40,0x40,0x40,0x4f,0x70,0x00},//7

 

{0x00,0x00,0x36,0x49,0x49,0x49,0x36,0x00},//8

 

{0x00,0x00,0x32,0x49,0x49,0x49,0x3e,0x00},//9

 

{0x00,0x00,0x7F,0x48,0x48,0x30,0x00,0x00},//P

 

{0x00,0x00,0x7F,0x48,0x4C,0x73,0x00,0x00},//R

 

{0x00,0x00,0x7F,0x49,0x49,0x49,0x00,0x00},//E

 

{0x00,0x00,0x3E,0x41,0x41,0x62,0x00,0x00},//C

 

{0x00,0x00,0x7F,0x08,0x08,0x7F,0x00,0x00},//H

 

{0x00,0x00,0x00,0xFF,0xFF,0x00,0x00,0x00},//I

 

{0x00,0x7F,0x10,0x08,0x04,0x7F,0x00,0x00},//N

 

{0x7C,0x48,0x48,0xFF,0x48,0x48,0x7C,0x00},  //中

 

{0x18,0x24,0x42,0x21,0x42,0x24,0x18,0x00}  //心形

};

 

unsignedint timecount1 , timecount2;

 

unsignedchar cntx , cnty ;

 

void main(void)

{

  cnty=0;

   

  while(1)

  {

     if(cnty<Lenth)//红色

    {

     P1=0xFF;

     P2=tab[cntx];  // 列线

     P0=digittab[cnty][cntx];   // 行线

    }

    else//绿色

    {

     P2=0xFF;

     P1=tab[cntx];   // 列线

     P0=digittab[cnty-Lenth][cntx];  // 行线

    }

 

   //用于控制动态扫描的速度

    if(++timecount1>=50)

    {

     timecount1=0;

     if(++cntx>=8) cntx=0;

    }

 

   //用于控制动字符间的切换速度

    if(++timecount2>=20000)

    {

     timecount2=0;

     if(++cnty>=Lenth*2)cnty=0;

    }

  }

 

}