#include <LPC17xx.h>

int main(){
	int i; 
	// from P1.24 -> 31
	LPC_PINCON->PINSEL3 &= 0x0000FFFF; 

	LPC_GPIO1->FIODIR = 0xFF000000; 
	
	while(1){
	LPC_GPIO1-> FIOSET=0xFF000000;
	for(i=0; i<1000; i++); 
	LPC_GPIO1->FIOCLR=0xFF000000;
	for(i=0; i<1000; i++); 
	}
}