#include <reg51.h>
#include <string.h>
#define uchar unsigned char
#define uint unsigned int

sbit RS=P3^0;
sbit RW=P3^1;
sbit E=P3^2;

uchar code table[]=" Pathfinder";


delay_ms(int ms)
{uchar i;
 uint  j;
 for(j=2*ms;j>0;j--) 
  for(i=250;i>0;i--);
 
}




void write_cmd(uchar cmd)
{
   RS=0;
   RW=0;
   E=0;
   P2=cmd;
   delay_ms(2);
   E=1;
   delay_ms(2);
   E=0;
}

void write_data(uchar d)

{

   RS=1;
   RW=0;
   E=0;
   P2=d;
   delay_ms(2);
   E=1;
   delay_ms(2);
   E=0;
}

void init_lcd()
{
    write_cmd(0x38);   
 	write_cmd(0x0f);//不顯示光標
	write_cmd(0x06);//指針自加一，整屏顯示不移動
	write_cmd(0x01);//清屏
}

void lcd_display_xy(char *string , uchar x, uchar y)
{ uchar i;
  
  write_cmd(0x80+0x40*y+x);
  for (i=0;i<strlen(string);i++)
  write_data(string[i]);
}


void main()
{

init_lcd();

lcd_display_xy("abc",2,0);
lcd_display_xy("efghij",0,1);
delay_ms(500);
write_cmd(0x07);
write_cmd(0x80+0x0);
write_data('a');
delay_ms(500);
write_cmd(1);
while(1);
}