void lcd_command_write(unsigned char cmd);//----function to send command to lcd
void lcd_cmd_hf(unsigned char cmd);       //----fuuncion to send 4-bit command to lcd
void lcd_data_write(unsigned char da);    //----function to send data to lcd
void lcd_display_string(unsigned char x, unsigned char y,const unsigned char *c);      //--function to send String of data to lcd
void lcd_init();                          //----lcd initialization 
void lcd_store();                         //----function to latch data inside lcd  
void delay(unsigned int ms);              //----Delay function
void lcd_w(unsigned char w);
void lcd_setpoint(unsigned char x, unsigned char y);
void lcd_store();
void lcd_display_number(unsigned char x, unsigned char y, signed int NumberToDisplay);
void ShowCustom(unsigned char x, unsigned char y,  char address); //----function to display custom character
void StoreCustom( char address, const char  * character);         //----function to store custom character

unsigned char st=0;
char StringToDisplay[10];

void lcd_store(){//--Latching function high to low-----//
       
    en = 1;                            //----enable pin high
    delay(1);                          //----delay 1ms
    en = 0;                            //----enable pin low
}

void lcd_w(unsigned char w)
{
    lcd &= 0x0F;                      //----clearing higher 4-bit of PORT and masking lower 4-bit of port
    lcd |= (w & 0xF0);                //----Masking lower 4-bit of data and lower 4-bit of port,send higher 4-bit of data
    lcd_store();                      //----Latching it to lcd

    lcd &= 0x0F;                      //----clearing higher 4-bit of PORT and masking lower 4-bit of port
    lcd |= ((w & 0x0F)<<4);           //----Masking higher 4-bit of data and lower 4-bit of port,send lower 4-bit of data
    lcd_store();                      //----Latching it to lcd
}

void lcd_command_write(unsigned char cmd)
{
    rs = 0;                           //----Register Selected is command register
    lcd_w(cmd);                       //----write the command
}

void lcd_data_write(unsigned char da)
{
    rs = 1;                           //----Register Selected is data register
    lcd_w(da);                        //----write the data
}

void lcd_cmd_hf(unsigned char cmd)
{
    rs = 0;                          //----Register Selected is command register
    lcd &= 0x0F;                     //----Masking higher bit of PORT
    lcd |= (cmd & 0xF0);             //----Masking lower 4-bit of data
    lcd_store();                     //----Latching it to lcd
}

void lcd_setpoint(unsigned char x, unsigned char y)
{
 unsigned char set;

    if(y==1)
        set=127+x;

    else if(y==2)
        set=191+x;

    lcd_command_write(set);

}

void lcd_display_string(unsigned char x, unsigned char y,const unsigned char *c)
{
    lcd_setpoint(x,y);
     while(*c != 0)                  //----while the pointer address not equal to zero (end of string)
     {
        lcd_data_write(*c++);        //----sending data to lcd display using pointer
        st++;
     }
   if(st==255)
       st=0;
    
}

void lcd_display_number(unsigned char x, unsigned char y, signed int NumberToDisplay)
{
   unsigned char  Old_X, Old_Y, Old_Digit_number, Erase_Digit_Number;
   st=0;
   itoa(StringToDisplay ,NumberToDisplay, 10);
   if(Old_X == x && Old_Y == y)
   {
     Erase_Digit_Number = Old_Digit_number - st;
     while(Erase_Digit_Number != 0)
     {
       lcd_data_write(0x20);
       Erase_Digit_Number--;
     }
        
   }
   
   lcd_display_string(x, y, StringToDisplay);     
   Old_Digit_number=st;
   Old_X=x;
   Old_Y=y;
   
}

void StoreCustom( char address, const char  * character)
{
    unsigned char i;
     address & = 0x07 ;
     
    lcd_command_write(64  + (address <<  3 ));  
    
    for(i=0 ; i<8 ; i++) lcd_data_write( character[i] );
   

}

void ShowCustom(unsigned char x, unsigned char y,  char address)
{
  
  address & = 0x07 ;  
  lcd_setpoint(x,y);
  lcd_data_write(address);
  
}

void delay(unsigned int ms)
{
    unsigned int i,j;
    for(i=0;i<ms;i++)
        for(j=0;j<=120;j++);

}

void lcd_init()
{
    lcd_cmd_hf(0x30);               //---sending sequence command
    lcd_cmd_hf(0x20);               //---sending sequence command
    lcd_command_write(0x28);        //---4bit mode & 5*8 dot & 2line
    lcd_command_write(0x0C);        //---cusor blinking 0e
    lcd_command_write(0x01);        //---clear lcd display
    lcd_command_write(0x06);        //---Auto incremintation courser
    lcd_command_write(0x80);        //---location address
    __delay_ms(500);
}

  DELAY_MS(  );

  DELAY_MS(  );