i have tried everything but GLCD not showing a single charactor

here is my code

//======================================================================
#include <LPC17xx.h>
#include "lcd_functions.h"

#include "gpio.h"

int main()
{ char i,a[]={"Good morning!"}; SystemInit(); //Clock and PLL configuration

GlcdDataBusDirnReg = PortDataBusConfig; // Configure all the Glcd pins as output GlcdCtrlBusDirnReg = PortCtrlBusConfig;

/* Select the Page0/Page1 and turn ON the GLCD */ Glcd_SelectPage0(); Glcd_CmdWrite(0x3f); Glcd_SelectPage1(); Glcd_CmdWrite(0x3f); delay(10);

/* Select the Page0/Page1 and Enable the GLCD */ Glcd_SelectPage0(); Glcd_CmdWrite(0xc0); Glcd_SelectPage1(); Glcd_CmdWrite(0xc0);

Glcd_SelectPage0(); Glcd_CmdWrite(0xB8); // Move the cursor to first line Glcd_CmdWrite(0x40); // Move the cursor to beginning of line

Glcd_DataWrite('H'); Glcd_DataWrite('e'); Glcd_DataWrite('l'); Glcd_DataWrite('l'); Glcd_DataWrite('o'); Glcd_DataWrite(' ');

Glcd_SelectPage1();

Glcd_DataWrite('w'); Glcd_DataWrite('o'); Glcd_DataWrite('r'); Glcd_DataWrite('l'); Glcd_DataWrite('d');

Glcd_SelectPage0(); Glcd_CmdWrite(0xB9); // Move the cursor to second line Glcd_CmdWrite(0x40); // Move the cursor to beginning of line

for(i=0;a[i]!='\0';i++) { Glcd_DataWrite(a[i]); }

while(1);
} //================================================================== lcd_functions.c

#include <LPC17xx.h>
#include "lcd_functions.h"

void delay(int cnt)
{ int i; for(i=0;i<cnt;i++);
}

/* Function send a complete byte on the Data bus */
void sendByte(char byte)
{ GlcdDataBusPort&=~(GLCD_dataBusMask); // Clear previous data GlcdDataBusPort|= (((byte >>0x00) & 0x01) << GLCD_D0); GlcdDataBusPort|= (((byte >>0x01) & 0x01) << GLCD_D1); GlcdDataBusPort|= (((byte >>0x02) & 0x01) << GLCD_D2); GlcdDataBusPort|= (((byte >>0x03) & 0x01) << GLCD_D3); GlcdDataBusPort|= (((byte >>0x04) & 0x01) << GLCD_D4); GlcdDataBusPort|= (((byte >>0x05) & 0x01) << GLCD_D5); GlcdDataBusPort|= (((byte >>0x06) & 0x01) << GLCD_D6); GlcdDataBusPort|= (((byte >>0x07) & 0x01) << GLCD_D7);
}

/* Function to send the command to Glcd */
void Glcd_CmdWrite(char cmd)
{ sendByte(cmd); //Send the Command GlcdControlBusPort &= ~(1<<GLCD_RS); // Send LOW pulse on RS pin for selecting Command register GlcdControlBusPort &= ~(1<<GLCD_RW); // Send LOW pulse on RW pin for Write operation GlcdControlBusPort |= (1<<GLCD_EN); // Generate a High-to-low pulse on EN pin delay(1000); GlcdControlBusPort &= ~(1<<GLCD_EN);

delay(10000);
}

/* Function to send the data to Glcd */
void Glcd_DataWrite(char dat)
{ sendByte(dat); //Send the data GlcdControlBusPort |= (1<<GLCD_RS); // Send HIGH pulse on RS pin for selecting data register GlcdControlBusPort &= ~(1<<GLCD_RW); // Send LOW pulse on RW pin for Write operation GlcdControlBusPort |= (1<<GLCD_EN); // Generate a High-to-low pulse on EN pin delay(1000); GlcdControlBusPort &= ~(1<<GLCD_EN);

delay(10000);
}

void Glcd_SelectPage0()
{ GlcdControlBusPort |= (1<<GLCD_CS1); GlcdControlBusPort &= ~(1<<GLCD_CS2);
}

void Glcd_SelectPage1()
{ GlcdControlBusPort |= (1<<GLCD_CS2); GlcdControlBusPort &= ~(1<<GLCD_CS1);
}

//=============================================================================== lcd_functions.h

#include <LPC17xx.h>
#include "gpio.h"

//#include<lpc17xx.h>

/* Configure the data bus and Control bus as per the hardware connection */
#define GlcdDataBusPort LPC_GPIO1->FIOPIN
#define GlcdControlBusPort LPC_GPIO2->FIOPIN

#define GlcdDataBusDirnReg LPC_GPIO1->FIODIR
#define GlcdCtrlBusDirnReg LPC_GPIO2->FIODIR

//#define GLCD_RW GPIO_PinWrite(Rw,Lo)

//#define Hi 1
//#define Lo 0

#define GLCD_D0 P2_0
#define GLCD_D1 P2_1
#define GLCD_D2 P2_2
#define GLCD_D3 P2_3
#define GLCD_D4 P2_4
#define GLCD_D5 P2_5
#define GLCD_D6 P2_6
#define GLCD_D7 P2_7

#define GLCD_RS P0_20
#define GLCD_RW P0_22
#define GLCD_EN P0_21

#define GLCD_CS1 P2_12
#define GLCD_CS2 P2_13

//#define C1_CLR GPIO_PinWrite(C1,Lo)

/* Masks for configuring the DataBus and Control Bus direction */
#define PortDataBusConfig ((1<<GLCD_D0)|(1<<GLCD_D1)|(1<<GLCD_D2)|(1<<GLCD_D3)|(1<<GLCD_D4)|(1<<GLCD_D5)|(1<<GLCD_D6)|(1<<GLCD_D7))
#define PortCtrlBusConfig ((1<<GLCD_RS)|(0<<GLCD_RW)|(1<<GLCD_EN))
#define GLCD_dataBusMask ((1<<GLCD_D0)|(1<<GLCD_D1)|(1<<GLCD_D2)|(1<<GLCD_D3)|(1<<GLCD_D4)|(1<<GLCD_D5)|(1<<GLCD_D6)|(1<<GLCD_D7))

void delay(int cnt);
void sendByte(char byte);
void Glcd_CmdWrite(char cmd);
void Glcd_DataWrite(char dat);
void Glcd_SelectPage0(void);
void Glcd_SelectPage1(void);

please help me

thank you.