This document provides an interfacing diagram and code for an LPC1768 microcontroller to toggle a set of GPIO pins. The code uses PINSEL4 and FIO2DIR registers to configure pins P0.2 to P0.7 as GPIO outputs. It then uses a for loop to toggle all the pins high and low by setting and clearing the FIO2SET and FIO2CLR registers respectively.

1. Interfacing diagram:

2. Code:
#include"LPC1768_Includes.h"
int main(void)
{
int i;
PINSEL4=0x00000000; //GPIO
FIO2DIR=0x000000FF; //GPIO port direction register (P0.2 to P0.7)
while(1)
{
FIO2SET=0x000000FF; // port output set register
for(i=0;i<1000000;i++);
FIO2CLR=0x000000FF;
for(i=0;i<1000000;i++);
}
}

3. Simulation:

4. Hardware Output: