#include <REGX51.H>

#define uchar unsigned char

#define uint unsigned int

void init();

void write_cmd(uchar cmd);

void write_data(uchar input);

void delay(uchar time_delay);

uchar table_wel[] = "hello world!";

uchar table_name[] = "i am gxf!";

sbit lcdrs = P3^0;

sbit lcdrw = P3^1;

sbit lcden = P3^2;	 

void main()

{

	uchar i = 0;

	init();

	//write_data('g');

	for(;i < 12;i ++)

	{

		write_data(table_wel[i]);

	}

	write_cmd(0xc0);

	//	delay(5);

	for(i = 0; i < 9; i++)

	{

		write_data(table_name[i]);

	}

	while(1);

} 

void init()

{

	lcdrs = 0;//命令选择段

	lcdrw = 0;//写命令

	write_cmd(0x38);

	write_cmd(0x0f);

	write_cmd(0x06);

	write_cmd(0x80);//从第一个位置开始显示

}

void write_cmd(uchar cmd)

{

	lcdrs = 0;//命令选择段

	lcdrw = 0;//写命令

	P2 = cmd;//设置显示模式

	delay(5);

	lcden = 1;

	delay(5);//延时5MS形成高脉冲

	lcden = 0;

}

void write_data(uchar input)

{

	lcdrs = 1;//写数据模式

	lcdrw = 0;//写数据

	P2 = input;//设置显示模式

	delay(5);

	lcden = 1;

	delay(5);//延时5MS形成高脉冲

	lcden = 0;

}

//软件延时

void delay(uchar time_delay)

{

	uint x,y;

	for(x = time_delay; x > 0; x --)

		for(y = 110; y > 0 ; y--);

}