实验原理图

实验程序

#include<reg51.h>

#include<stdio.h>

#include<stdlib.h>

#include<intrins.h>

#include<absacc.h>

#define busy 0x80 //用于检测LCD 状态字中的Busy 标识

#define RSaddr 0x1000

#define RWaddr 0x2000

#define CSaddr 0x0400

#define adtn 0xc8ff

#define wc 0xcfff

#define wd 0xdfff

#define rc 0xefff

unsigned char code homepage[] = {"www.ispdown.com"};

unsigned char code email[] = {"ispdown@21cn.com"};

//5ms 延时

void delay5ms(void)

{

unsigned int TempCyc = 5552;

while(TempCyc--);

}

//----------------------------------

//400ms 延时

void delay400ms(void)

{

unsigned char TempCycA = 5;

unsigned int TempCycB;

while(TempCycA--)

{

TempCycB=7269;

while(TempCycB--);

};

}

//--------------------------------

void waitLcd()

{

char temp;

bit flag=1;

while(flag==1)

{

//temp=XBYTE[CSaddr+RWaddr+adtn];

temp=XBYTE[rc];

if (temp>>7==0) flag=0;

P1=temp;

}

P1=0xff;

}

//---------------------------------

void WC_Lcd(bit isCheck,char c)

{

if (isCheck==1) waitLcd();

//XBYTE[CSaddr+adtn]=c;

XBYTE[wc]=c;

}

//--------------------------------

void WD_Lcd(char c)

{

waitLcd();

//XBYTE[CSaddr+RSaddr+adtn]=c;

XBYTE[wd]=c;

}

//----------------------------------

void LcdInit()

{

delay5ms();