液晶显示器的驱动程序

ID:327109 · 发表于 2018-5-10 20:26

#include "reg51.h"
#include<intrins.h>
#define uchar unsigned char
sbit RS=P0^7;
sbit RW=P0^6;
sbit EN=P0^5;
void write1(unsigned char dat);
void wri(unsigned char com);
//void  keyscan();
unsigned int m,n,v,k;
unsigned char tab1[]="欢迎用单片机系统";
unsigned char tab2[]="ST7920字库液晶屏";
unsigned char tab3[]="是你学习的好帮手";
unsigned char tab4[]="TEL:13078588356 ";
//*********************************************//
void delay(unsigned int ms)
{
unsigned int i, j=0;
for(i=0;i<=ms;i++)
for(j=0;j<110;j++);
}

void disp1()
{
   //wri(0x80);
   //delay(20);//
wri(0x80);
for(m=0;m<=16;m++)
   write1(tab1[m]);
   delay(5);
   wri(0x90);
   for(n=0;n<=16;n++)
   write1(tab2[n]);
   delay(5);
   wri(0x88);
   for(v=0;v<=16;v++)
   write1(tab3[v]);
   delay(5);
   wri(0x98);
   for(k=0;k<=16;k++)
   write1(tab4[k]);
   return;
}

void disp_int()
{
  delay(5);
  wri(0x30);
  delay(5);
  wri(0x0c);
  delay(5);
  wri(0x01);
  delay(5);
  wri(0x06);
delay(5);
  }

void wri(unsigned char com)
{
   RS=0;
   RW=0;
   EN=1;
   P2=com;
   delay(5);
   EN=1;
   EN=0;
}
void write1(unsigned char dat)
{
  EN=1;
  RS=1;
  RW=0;
  P2=dat;
  delay(20);
  EN=1;
  EN=0;
  }

void main()
{
disp_int();
disp1();
while(1);
}

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