LCD12864液晶显示

gaoxiupei1 2014-11-03 09:29:01

#include<reg52.h>

#include<intrins.h>

#include<stdlib.h>

#define uchar unsigned char 

#define uint unsigned int

#define LCD_data P0

sbit LCD_RS=P2^0;

sbit LCD_RW=P2^1;

sbit LCD_EN=P2^2;

sbit LCD_PSB=P2^3;

uchar code dis2[]="www.txmcu.com";

void delay_1ms(uint x);

void write_cmd(uchar cmd);

void write_data(uchar dat);

void lcd_pos(uchar x,uchar y);

void lcd_init();

void main()

{

	uchar i;

	delay_1ms(10);

	lcd_init();

	lcd_pos(1,0);

	i=0;

	while(dis2[i]!='\0');

	{

		write_data(dis2[i]);

		i++;

	}

}

void write_cmd(uchar cmd)

{

	LCD_RS=0;  

	LCD_RW=0;  

	LCD_EN=0;

	P0=cmd;

	delay_1ms(5);

	LCD_EN=1;

	delay_1ms(5);

	LCD_EN=0;

}

void delay_1ms(uint x)

{

	uint i,j;

	for(j=0;j<x;j++)

		for(i=0;i<110;i++);

}

void write_data(uchar dat)

{

	LCD_RS=1;  

	LCD_RW=0;  

	LCD_EN=0;

	P0=dat;

	delay_1ms(5);

	LCD_EN=1;

	delay_1ms(5);

	LCD_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_cmd(pos);

}

void lcd_init()

{

	LCD_PSB=1;

	write_cmd(0x30);

	delay_1ms(5);

	write_cmd(0x0c);

	delay_1ms(5);

	write_cmd(0x01);

	delay_1ms(5);

}