#include <reg52.h>
#include <string.h>
sbit RS = P1^0; 
sbit RW = P1^1;
sbit EN = P1^2;

sbit BUSY = P0^7;
typedef unsigned char uint8;
typedef unsigned int uint16;
char string[]="guoyingjie";
char neirong[]="151307191";
void wait()
{  	P0 = 0XFF;
	do	{	EN=0;
			RS=0;
			RW=1;
			EN=1;	
		}	
	   while(BUSY==1);
   EN=0;
}
void write_cmd(uint8 cmd)
{	wait();
		EN=0;
		RS=0;
		RW=0;
		P0=cmd;
		EN=1;
	EN=0;
}

void write_data(uint8 dat)
{	wait();
		EN=0;
		RS=1;
		RW=0;
		P0=dat;
		EN=1;
	EN=0;
}
void delay()
{
   uint16 i=50000;
   while(i--);}	
void lcd_init()
{   

	write_cmd(0x38);
	write_cmd(0x0c);	///初始化lcd
	write_cmd(0x06);
	write_cmd(0x01);
	
}
void w_str(uint8 addr,char *p)
   {
    write_cmd(addr);
	while(*p!='\0')
	 write_data(*p++);
   } 
void guo()
{
   lcd_init();
	while(1)
	{	
	   w_str(0xa7-strlen(string),string); 
	   w_str(0xe7-strlen(neirong),neirong);
	   write_cmd(0x1c);	                   //0x1c向右，0x18向左移动
	   delay();	  
	}	

}