Mini ARM Board-LPC2148

#include<LPC21xx.h>

void delay1(int);    //define delay function

int main()
{

PINSEL0=0x00000000;    //select pins for blinking led

IODIR0=0x0000ffff;    //select I/O pins as output
    
while(1)
{

  IOSET0=0x0000ffff;    //sets pins high
  delay1(1000);                //gives 1 SEC delay
  IOCLR0=0x0000ffff;    //clears pins
  delay1(1000);                //gives 1 SEC delay
}
}
/*    Delay routine;gives an approximate delay in milliseconds    */

void delay1(int d)           // delay routine
{  
    int i;
    while(d)                        
    {    
              for(i=0;i<7000;i++){;}     
        d--;
    }
}