Simple Switches Gamepad using ATMEGA32U4

frs-marcelo_gamepad.ino

#include <Gamepad.h>

unsigned char button_normal[32] = {2,3,4,5,6};
unsigned char button_switch[32] = {7,8,9,10,14,15,16,A0,A1,A2,A3};
bool button_state[32];


void setup_pins(unsigned char *buttons, uint8_t total){
  for(uint8_t i=0; i<total; i++){
    pinMode(buttons[i], INPUT_PULLUP);
  }
}

void setup() {
  Gamepad.begin();
  delay(1000);
  setup_pins(button_normal, 6);
  setup_pins(button_switch, 11);
}

void loop() {
  delay(2);
  uint8_t button = 0;
  bool state = false;
  for(uint8_t i=0; i<5; i++){
    state = digitalRead(button_normal[i]) == 0;
    Gamepad.setButton(button, state);
    button_state[button] = state;
    button++;
  }
  for(uint8_t i=0; i<11; i++){
    state = digitalRead(button_switch[i]) == 1;
    if(state && !button_state[button]){
      if(i > 2){
        Gamepad.setButton(button, true);
        delay(100);
        Gamepad.setButton(button, false);
        delay(100);
      }
      button_state[button] = true;
    } else if(!state && button_state[button]) {
      Gamepad.setButton(button, true);
      delay(100);
      Gamepad.setButton(button, false);
      delay(100);
      button_state[button] = false;
    }
    button++;
  }
}