PC2004 LCM Driver

/*********************************************************** 
File name: Driver for PC2004 series character LCM module of POWERTIPAuthor 
: FreeVersion
: v01Description 
: Address 0x80~0xa7,0xc0~0xe7;
                First line: 0x80~0x96; Second line: 0xc0~0xd6;
   Third line: 0x97~0xa7; Fourth line: 0xd7~0xe7;
Modification record: None 
***********************************************************/
typedef unsigned char Uchar;
typedef unsigned int Uint;

#define LCDCmdPort P0
#define LCDDataPort P0
sbit LCD_RS  = P2^7;
sbit LCD_E   = P2^6;

/* LCD busy detection function*/  
void LCDBusy(void)
{
  Uchar i;               
  for(i=0;i<80;i++)      
  {}                     
}
/* LCD control command function*/ 
void LCDCmd(char c)
{     
  LCDBusy();              
  LCDCmdPort=c;           
  LCD_RS=0;               
  LCD_E=1;                
  LCD_E=0;                
}
/* LCD data input function*/ 
void LCDData(char d)
{     
  LCDBusy();            
  LCDDataPort=d;        
  LCD_RS=1;             
  LCD_E=1;              
  LCD_E=0;              
} 
/* LCD initialization function*/ 
void LCDInit(void)
{
  LCD_E=1;                              
  LCD_RS=1;                             
  LCDCmd(0x38); //function set          
  LCDCmd(0x0c); //display on/off        
  LCDCmd(0x06); //set entry mode        
  LCDCmd(0x02); //return home           
  LCDCmd(0x01); //clear display         
}
/* Display string function, addr displays the starting address of the string*/
void LCDStr(Uchar addr,Uchar *s)    
{     
  idata int d=0;                                
  LCDCmd(addr); //Display address//      
  while (s[d]!=0x00)                            
  LCDData(s[d++]); // char of LCM //           
}
/*p is the first address of the string or array, len is the number of strings, the array should be a two-dimensional array of ≤4*20 or a one-dimensional array of ≤80*/
void LCDSz(Uchar *p,Uchar len)
{
  Uchar i;                                     
  LCDCmd(0x80); //Display address//         
  while(*p!=0x00)                              
  {for(i=0;i     {LCDData(*p++);}                         
   break;                                      
  }                                            
}