Hi, I have purchased an Arduino Micro in the hope to build a custom game controller, I am using the example code for the Joystick library, and have it working and recognised in windows with one switch currently (pin9) but I would like all 4 switches (9,10,11,12) to toggle their own LED on and off (push once and LED turns on, push again and LED turns off.
So I have two questions, could anyone point me in the right direction on how to code this? (this is my first time coding and using Arduino 
and should each LED be wired to its own output pin, or is there a way to do this off the switch?
Code attached.
// Simple example application that shows how to read four Arduino
// digital pins and map them to the USB Joystick library.
//
// The digital pins 9, 10, 11, and 12 are grounded when they are pressed.
//
// NOTE: This sketch file is for use with Arduino Leonardo and
// Arduino Micro only.
//
// by Matthew Heironimus
// 2015-11-20
//--------------------------------------------------------------------
#include <Joystick.h>
void setup() {
// Initialize Button Pins
pinMode(9, INPUT_PULLUP);
pinMode(10, INPUT_PULLUP);
pinMode(11, INPUT_PULLUP);
pinMode(12, INPUT_PULLUP);
// Initialize Joystick Library
Joystick.begin();
}
// Constant that maps the phyical pin to the joystick button.
const int pinToButtonMap = 9;
// Last state of the button
int lastButtonState[4] = {0,0,0,0};
void loop() {
// Read pin values
for (int index = 0; index < 4; index++)
{
int currentButtonState = !digitalRead(index + pinToButtonMap);
if (currentButtonState != lastButtonState[index])
{
Joystick.setButton(index, currentButtonState);
lastButtonState[index] = currentButtonState;
}
}
delay(50);
}