[PIC] Program is successfully built but LCD not displaying anything

Code C - [expand]
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#define _XTAL_FREQ 20000000
#define RS RD2
#define EN RD3
#define D4 RD4
#define D5 RD5
#define D6 RD6
#define D7 RD7
 
#include <htc.h>
 
__CONFIG(FOSC_EXTRC &WDTE_OFF & PWRTE_ON &LVP_OFF &BOREN_ON &CPD_OFF &WRT_OFF &CP_OFF);
 
/*******START OF LCD FUNCTIONS*********/
void Lcd_SetBit(char data_bit) //Based on the Hex value Set the Bits of the Data Lines
{
    if(data_bit& 1) 
        D4 = 1;
    else
        D4 = 0;
 
    if(data_bit& 2)
        D5 = 1;
    else
        D5 = 0;
 
    if(data_bit& 4)
        D6 = 1;
    else
        D6 = 0;
 
    if(data_bit& 8) 
        D7 = 1;
    else
        D7 = 0;
}
 
void Lcd_Cmd(char a)
{
    RS = 0;           
    Lcd_SetBit(a); //Incoming Hex value
    EN  = 1;         
    __delay_ms(4);
    EN  = 0;         
}
 
Lcd_Clear()
{
    Lcd_Cmd(0); //Clear the LCD
    Lcd_Cmd(1); //Move the curser to first position
}
 
void Lcd_Set_Cursor(char a, char b)
{
    char temp,z,y;
    if(a== 1)
    {
      temp = 0x80 + b - 1; //80H is used to move the curser
        z = temp>>4; //Lower 8-bits
        y = temp & 0x0F; //Upper 8-bits
        Lcd_Cmd(z); //Set Row
        Lcd_Cmd(y); //Set Column
    }
    else if(a== 2)
    {
        temp = 0xC0 + b - 1;
        z = temp>>4; //Lower 8-bits
        y = temp & 0x0F; //Upper 8-bits
        Lcd_Cmd(z); //Set Row
        Lcd_Cmd(y); //Set Column
    }
}
 
void Lcd_Start()
{
  Lcd_SetBit(0x00);
  for(int i=1065244; i<=0; i--)  NOP();  
  Lcd_Cmd(0x03);
    __delay_ms(5);
  Lcd_Cmd(0x03);
    __delay_ms(11);
  Lcd_Cmd(0x03); 
  Lcd_Cmd(0x02); //02H is used for Return home -> Clears the RAM and initializes the LCD
  Lcd_Cmd(0x02); //02H is used for Return home -> Clears the RAM and initializes the LCD
  Lcd_Cmd(0x08); //Select Row 1
  Lcd_Cmd(0x00); //Clear Row 1 Display
  Lcd_Cmd(0x0C); //Select Row 2
  Lcd_Cmd(0x00); //Clear Row 2 Display
  Lcd_Cmd(0x06);
}
 
void Lcd_Print_Char(char data)  //Send 8-bits through 4-bit mode
{
   char Lower_Nibble,Upper_Nibble;
   Lower_Nibble = data&0x0F;
   Upper_Nibble = data&0xF0;
   RS = 1;             // => RS = 1
   Lcd_SetBit(Upper_Nibble>>4);             //Send upper half by shifting by 4
   EN = 1;
   for(int i=2130483; i<=0; i--)  NOP(); 
   EN = 0;
   Lcd_SetBit(Lower_Nibble); //Send Lower half
   EN = 1;
   for(int i=2130483; i<=0; i--)  NOP();
   EN = 0;
}
 
void Lcd_Print_String(char *a)
{
    int i;
    for(i=0;a[i]!='\0';i++)
       Lcd_Print_Char(a[i]);  //Split the string using pointers and call the Char function 
}
 
/*******END OF LCD FUNCTIONS*********/
 
const unsigned short Custom_Char5x8[] = {
0b01110,0b11011,0b10001,0b10001,0b10001,0b10001,0b10001,0b11111,//code for CGRAM memory space 1
0b01110,0b11011,0b10001,0b10001,0b10001,0b10001,0b11111,0b11111,//code for CGRAM memory space 2
0b01110,0b11011,0b10001,0b10001,0b10001,0b11111,0b11111,0b11111,//code for CGRAM memory space 3
0b01110,0b11011,0b10001,0b10001,0b11111,0b11111,0b11111,0b11111,//code for CGRAM memory space 4
0b01110,0b11011,0b10001,0b11111,0b11111,0b11111,0b11111,0b11111,//code for CGRAM memory space 5
0b01110,0b11011,0b11111,0b11111,0b11111,0b11111,0b11111,0b11111,//code for CGRAM memory space 6
0b01110,0b11111,0b11111,0b11111,0b11111,0b11111,0b11111,0b11111 //code for CGRAM memory space 7
};
 
int main()
{
    unsigned int a;char i;
    TRISD = 0x00;
    Lcd_Start();
 
    //***Load custom char inyo CGROM***//
    Lcd_Cmd(0x04);//set CGRAM address
    Lcd_Cmd(0x00);//...set CGRAM Address
    for (i = 0; i <= 63 ; i++)
    Lcd_Print_Char(Custom_Char5x8[i]);
    Lcd_Cmd(0);      // Return to Home
    Lcd_Cmd(2);      // .. return to Home
  //*** Loading custom char complete***//
 
    while(1)
    {
        Lcd_Clear();
        Lcd_Set_Cursor(1,1);
        Lcd_Print_String("Custom Font");
        
 
        Lcd_Set_Cursor(2,1);
        Lcd_Print_Char(0); // Display Custom Character 0
        Lcd_Print_Char(1); // Display Custom Character 1
        Lcd_Print_Char(2); // Display Custom Character 2
        Lcd_Print_Char(3); // Display Custom Character 3
        Lcd_Print_Char(4); // Display Custom Character 4
        Lcd_Print_Char(5); // Display Custom Character 5
        Lcd_Print_Char(6); // Display Custom Character 6
        Lcd_Print_Char(7); // Display Custom Character 7
        Lcd_Print_String("BATTERY");
        __delay_ms(1000);
    }
    return 0;
}