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  LED USING SWITCH
#include<lpc214x.h>
void delay();
void main()
{
PINSEL0 = 0x00000000;
PINSEL1 = 0x00000000;
PINSEL2 = 0x00000000;
 IO1DIR |=0XfffffFFF; //Port 1 is now acting as a output pin
 IO0DIR = 0x0; //Port 0 is now acting as a input pin
 while(1)
 {
 //Checking 15th pin of Port 0 (Switch 1). If switch is pressed, Pin value will be 0.
 if ((IO0PIN & (1<<15)) ==0) 
 IO1SET |= (1<<16); // (LED1 is glowing)
 else
 IO1CLR |=(1<<16); // (LED is OFF)
 } 
} 

void delay()
{
 unsigned int i;
 for(i=0;i<30000;i++);
}