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

本文引用地址: http://www.21ic.com/app/mcu/201807/783335.htm

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

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

#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

{

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;

}

}

}