LCD-LPC2148

#include<lpc214x.h>
#define LCD_PORT 0x00FF0000
#define EN 1<<24     //define RS pin
#define RS 1<<25     //define EN pin
#define LCD_SHIFT 16    //shift data by LCD_SHIFT bits
void delay()
{
 int i,j;
 for(i=0;i<100;i++)
 for(j=0;j<1000;j++);
}

void LCD_strobe()       //Enable pulse
{
 delay();
 IOSET1 = EN;
 delay();
 IOCLR1 = EN;
 delay();
}

void LCD_data(unsigned char ch)      //function to send data
{
 IOCLR1 = LCD_PORT;        //clear LCD pins
 IOSET1 = ch<<LCD_SHIFT;       //shift data and set only the data bits
 IOSET1 = RS;         //RS =1
 LCD_strobe();         //EN pulse
}

void LCD_cmd(unsigned char ch)      //function to send command
{
 IOCLR1 = LCD_PORT;
 IOSET1 = ch<<LCD_SHIFT;
 IOCLR1 = RS;        //RS = 0
 LCD_strobe();        //EN pulse
}

void LCD_init()
{
 PINSEL0 = 0;        //set pins as GPIO
 PINSEL1 = 0;
 PINSEL2 = 0;

 IODIR1 = LCD_PORT | RS | EN;    //set the pins as output

 LCD_cmd(0x38);       //8bit use both lines
 LCD_cmd(0x06);       //Entry mode
 LCD_cmd(0x0C);       //display ON cursor OFF
 LCD_cmd(0x01);       //Clear display
 LCD_cmd(0x80);       //cursor at 1st line 1st position
}

void LCD_display(int row, int pos, unsigned char *ch)
{
 unsigned char temp;

 if(row==1)
 {
  temp = 0x80 | (pos-1);    //set cursor at 1st line pos position
 }
 else
 {
  temp = 0xC0 | (pos-1);   //set cursor at 2nd line pos position
 }
 LCD_cmd(temp);
 while(*ch)       //while data is valid, display the string
  LCD_data(*ch++);
}