51单片机实验17：LCD1602液晶

开发板液晶模块电路图如下：

#include

#include

uc dig1[]=" Happy New Year ";

uc dig2[]=" Ha  Ha  Ha  Ha ";

void main()

{

uc i;

lcdinit();

lcdwritecom(0x80);

for(i=1;i<=16;i++)

{

lcdwritedata(dig1[i-1]);

}

    lcdwritecom(0xc0);

for(i=1;i<=16;i++)

{

lcdwritedata(dig2[i-1]);

}

while(1);

}

#include

void delay()   //延时500微秒

{

    uc a,b;

    for(b=99;b>0;b--)

        for(a=1;a>0;a--);

}

#ifndef lcd4pins

void lcdwritecom(uc com)

{

lcd_e=0;

lcd_rs=0;

lcd_rw=0;

lcd_data=com;

delay();

lcd_e=1;

delay();

lcd_e=0;

}

#else

void lcdwritecom(uc com)

{

lcd_e=0;

lcd_rs=0;

lcd_rw=0;

lcd_data=com;

delay();

lcd_e=1;

delay();

lcd_e=0;

lcd_data=com<<4;

delay();

lcd_e=1;

delay();

lcd_e=0;

}

#endif

#ifndef lcd4pins

void lcdwritedata(uc dat)

{

lcd_e=0;

lcd_rs=1;

lcd_rw=0;

lcd_data=dat;

delay();

lcd_e=1;

delay();

lcd_e=0;

}

#else

void lcdwritedata(uc dat)

{

lcd_e=0;

lcd_rs=1;

lcd_rw=0;

lcd_data=dat;

delay();

lcd_e=1;

delay();

lcd_e=0;

lcd_data=dat<<4;

delay();

lcd_e=1;

delay();

lcd_e=0;

}

#endif

#ifndef lcd4pins

void lcdinit()

{

lcdwritecom(0x01);

lcdwritecom(0x06);

lcdwritecom(0x0c);

lcdwritecom(0x38);

}

#else

void lcdinit()

{

lcdwritecom(0x32);

lcdwritecom(0x28);

lcdwritecom(0x01);

lcdwritecom(0x06);

lcdwritecom(0x0c);

}

#endif

#ifndef _LCD_H_

#define _LCD_H_

#include

#ifndef uc

#define uc unsigned char

#endif

#ifndef ui

#define ui unsigned int

#endif

//#define lcd4pins   //4PIN输入时打开这个

#define lcd_data P0

sbit lcd_e=P2^7;

sbit lcd_rw=P2^5;

sbit lcd_rs=P2^6;

void delay();

void lcdwritecom(uc com);

void lcdwritedata(uc dat);

void lcdinit();

#endif