51 MCU_1602 LCD custom heart-shaped pattern

unsigned char table1[]={0x03,0x07,0x0f,0x1f,0x1f,0x1f,0x1f,0x1f,
                         0x18,0x1E,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f, 0x07,0x1f
                         ,0x1f,0x1f,0x1f,0x1f ,0x1f,0x1f,
                         0x10,0x18,0x1c,0x1E,0x1E,0x1E,0x1E,0x1E, 0x0f
                         ,0x07,0x03,0x01,0x00,0x00,0x00,0x00,
                         0x1f,0x1f,0x1f,0x1f,0x1f,0x0f,0x07,0x01,
                         0x1f,0x1f,0x1f,0x1f,0x1f,0x1c,0x18,0x00,
                         0x1c,0x18,0x10,0x00,0x00,0x00,0x00,0x00} ;/ /Heart pattern
#define CLEARSCREEN LCD_write_command(0x01)

/**************Define interface****************************/

#define LCDIO P0
sbit LCD1602_RS=P2^2;    
sbit LCD1602_RW=P2^1;   
sbit LCD1602_EN=P2^0; 

/**************Define function****************************/
void LCD_write_command(unsigned char command);//write command function
void LCD_write_dat(unsigned char dat);//write data function
void LCD_set_xy( unsigned char x, unsigned char y );//set display position function
void LCD_dsp_char( unsigned x,unsigned char y,unsigned char dat);//display a character function
void LCD_dsp_string(unsigned char X,unsigned char Y,unsigned char *s);//display string function
void LCD_init(void);//initialization function
void delay_nms(unsigned int n);//delay function
/************************************************/

/************Initialization function******************/
void LCD_init(void)
{ 
CLEARSCREEN;//clear screen 
LCD_write_command(0x38);/ /set 8 bit data transmission mode 
LCD_write_command(0x0c);//open display (enable lcd display)
LCD_write_command(0x80);//set lcd first display address 
CLEARSCREEN;//clear screen
}
/********* *******************************************/

/**************Write command function************************************/ 
void LCD_write_command(unsigned char command)
{
    LCDIO=command;
    LCD1602_RS=0;   
    LCD1602_RW=0;
    LCD1602_EN=0;
    LCD1602_EN=1;
    delay_nms(10);
}
/***************************************************/
/****************Write data function****************************/
void LCD_write_dat(unsigned char dat)
{
LCDIO=dat;
LCD1602_RS=1;
LCD1602_RW=0;
LCD1602_EN=0;
delay_nms(1);
LCD1602_EN=1;
}
/********************************************************/

/******************Set display position****************************/
void LCD_set_xy( unsigned char x, unsigned char y )
{
unsigned char address;
if (y == 1) 
   address = 0x80 + x;
else 
      address =0xc0+ x;
LCD_write_command(address); 
}
/************ ***************************************/

/****************Display a character**********************/
void LCD_dsp_char( unsigned x,unsigned char y,unsigned char dat)
{
LCD_set_xy( x, y ); 
LCD_write_dat(dat);
}
/**************************************************/

/***************Display string function***************/
void LCD_dsp_string(unsigned char X,unsigned char Y,unsigned char *s)
{
     LCD_set_xy( X, Y ); 
     while (*s) 
     {
       LCD_write_dat(*s);   
       s ++;
     }
}
/***************************************************/

/********** Delay************************/
void delay_nms(unsigned int n)      
{
     unsigned int i=0, j=0;
     for (i=n;i>0;i--)
     for (j=0;j<10;j++); 
}
/************************ *********************/

/***********Main function**************/
void main(void)
{
unsigned char i,j,k,tmp;
LCD_init();
delay_nms(100);
tmp=0x40;//Set the format word of CGRAM address
k=0;
for(j=0;j<8;j++)
   {
      for(i=0;i<8;i++)
       {
         LCD_write_command(tmp+i); // Set the CGRAM address of custom character 
         delay_nms(2);
         LCD_write_dat(table1[k]); // Write the data of custom character table to CGRAM
         k++;
         delay_nms(2);
       }
      tmp=tmp+8;
    }
   LCD_dsp_string(1,1,"heart: ");//Display "heart" in the first row and first column
   for (i=0;i<4;i++)
     {
       LCD_dsp_char( 10+i,1,i);//Display the upper half of the heart pattern at the 10th column of the first row
       delay_nms(1);
     }
   for (i=4;i<8;i++)
     {
       LCD_dsp_char( 10+i-4,2,i);//Display the lower half of the heart pattern at the 10th column of the second row
       delay_nms(1);
     }
   while (1);
}
/************************ Thanks to Mr. Chen Qinghua for his help************************************************/