帶字庫的lcd12864液晶驅動c51程序

ID:83710 · 發表于 2015-6-23 23:50

#include<reg52.h>

#include<stdlib.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar xian,flag;
uint time=0;
#define Lcd_data P0
sbit RS  =  P2^6;          //（數據命令）寄存器選擇輸入
sbit RW  =  P2^5;          //液晶讀/寫控制
sbit EN  =  P2^7;          //液晶使能控制
sbit PSB =  P3^2;          //串/并方式控制

uchar code dis1[]={" 長恨歌 "};
uchar code dis2[]={"在天愿作比翼鳥"};
uchar code dis3[]={"在地愿為連理枝"};
uchar code dis4[]={"自古多情空余恨"};
uchar code dis5[]={"此恨綿綿無絕期"};

void delay(uint x)
{
uint i,j;
for(i=x;i>0;i--)
   for(j=110;j>0;j--);
}

//寫指令到LCD
void write_com(uchar com)
{
RS=0;
RW=0;
EN=0;
P0=com;
delay(1);
EN=1;
delay(1);
EN=0;
}

//寫指令到LCD
void write_data(uchar dat)
{
   RS=1;
   RW=0;
   EN=0;
   P0=dat;
   delay(1);
   EN=1;
   delay(1);
   EN=0;
}

void lcd_pos(uchar X,uchar Y)
{
   uchar pos;
   if(X==0)X=0x80;
   else if(X==1)X=0x90;
   else if(X==2)X=0x88;
   else if(X==3)X=0x98;
   pos=X+Y;
   write_com(pos);
}

void display(uchar p[],uchar a)
{
   uchar*display1;
   display1=p;
   lcd_pos(a,0);
   while((*display1)!='\0')
   {
   write_data(*display1);
   display1++;
   }
}

void init()
{
   TMOD=0x02;
   EA=1;
   ET0=1;
   TH0=6;
   TL0=6;
   TR0=1;
   time=0;
   xian=0;
}

void lcd_init()
{
PSB=1;//并口方式
write_com(0x30); //設置8位數據
delay(5);
write_com(0x0c);//顯示開，光標關
delay(5);
write_com(0x01); //清除顯示內容
delay(5);
}

main()
{
   init();
   delay(10);
   lcd_init();
   while(1)
   {
   switch(xian)
{
      case 0:display(dis1,0); break;
case 1:display(dis2,1); break;
case 2:display(dis3,2); break;
case 3:display(dis4,3); break;
case 4:display(dis5,0); break;goto a;
default:break;
}
}
a:
while(1);
}

void timer0() interrupt 1
{
   time++;
   if(time==4000)
   {
      time=0;
   xian++;
      if(xian==5)xian=0;
   }
}

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帶字庫的lcd12864液晶驅動c51程序