#include"reg52.h"
#define uchar unsigned char
sbit RS=P2^0;
sbit RW=P2^1;
sbit E=P2^2;
void delayl()
     {uchar i,j;      
	  i=0xff;
	  j=0x0a;
	  while(i--)
	  while(j--);
	 }
void delays()
     {uchar i;
	  i=0xff;
	  while(i--);
	  }
void wrdat(uchar c)
     {delays();
	  E=0;
	  RS=1;
	  RW=0;
	  E=1;
	  P0=c;
	  E=0;
	  RW=1;
	 }
void wrcom(uchar c)
     {delays();
	  E=0;
	  RS=0;
	  RW=0;
	  E=1;
	  P0=c;
	  E=0;
	  RW=1;
	 }
/*uchar readdat(uchar i)
      {uchar c;
	   wrcom(i);
       P0=0xff;
       E=0;
	   RS=1;
	   RW=1;
	   E=1;
	   c=P0;
	   E=0;
	   RW=0;
	   return c;
	  }*/
void inilcd()
     {delayl();
      wrcom(0x38);
      delayl();
      wrcom(0x38);
	  delayl();
      wrcom(0x0e);
      delayl();
      wrcom(0x06);
	  }
void showstr(uchar i,char *p)
     { switch (i)
	  {case 0x80:
	       for(;i<=0x8f;i++)
	          {wrcom(i);
		       wrdat(*p);
		       p++;
		      } 
           break;
		case 0xc0:
	       for(;i<=0xcf;i++)
	          {wrcom(i);
		       wrdat(*p);
		       p++;
		       }
            break;
	    }}
/*void showword(uchar i,uchar j)
     {wrcom(i);
	  wrdat(j);
	  }*/
void wrline(uchar i,uchar *p)
     {uchar j;
      for(j=0xc0;j<=i;j++)
         {wrcom(j);
		  wrdat(*p);
		  p++;
		 }
	  for(;j<=0xcf;j++)
	     {wrcom(j);
		  wrdat(' ');
		 }

        }