[ARM] LPC 2148 development board problem

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/*serial communication programm*/
/*WHAT EVER THE CHARACTER TYPED FROM THE KEYBOARD OF PC THAT GOES IN TO LPC2129 AND FROM LPC2129,IT DISPLAY ON THE HYPERTERMINAL*/
#include<LPC21xx.h>
void main(void)
{
 unsigned char ch;
 PINSEL0=0X00000005;/*TO MAKE THE PORT PINS0.0&0.1 AS TxD&RxD*/
 U0LCR=0X83;/*TO SELECT THE WORD LENGTH AS 8BIT & MAKE THE LATCH ACCESS BIT HIGH TO CHANGE THE BAUD RATE*/
 U0DLM=0;/*SET DIVISOR LATCH MSB REGISTER AS 0*/
 U0DLL=20;/*SET THE DIVISOR LATCH LSB REGISTER AS 20 TO GET 9600 BAUD RATE & CCLK@12MHZ*/
 U0LCR=0X03;/*TO MAKE THE LATECH ACCESS BIT LOW*/
 while(1)
 {
   while(!(U0LSR&0X01));/*WAIT UNTILE DATA IS RECIEVED*/
   ch=U0RBR;/*PLACE THE RECIEVED DATA FROM RECIEVE BUFFER REGISTER IN A VARIABLE*/
   U0THR=ch;/*PLACE THE RECIEVED DATA IN TO THE TRANSMIT BUFFER REGISTER*/
   while(!(U0LSR&0X20));/*WAIT UNTIL DATA IS TRANSMITTED*/
 }
}
 
/*LED PROGRAMM*/
/*ALTERNATE BLINKING OF AN LED*/
 
#include<LPC21xx.h>
#define LED 1<<1
void delay(void);
void main(void)
{
  IODIR0=LED;       /*MAKE PIN 0.1 AS OUTPUT*/
  while(1)
 {
 IOSET0=LED;       /* SET THE PIN 0.1*/
 delay();          /*CALLING THE DELAY FUNCTION*/
 IOCLR0=LED;       /*CLEAR THE PIN 0.1*/
 delay();          /*CALLING THE DELAY FUNCTION*/
  }
}
void delay(void)
{
 unsigned int i;
 unsigned char j=255;
  for( ;j>0;j--)
    for(i=500;i>0;i--);
}