#include <Arduino.h>
#include <stdint.h>

const int LEDS1[4] = {12, 13, 14, 15};
const int LEDS2[4] = {27, 26, 25, 33};
const int LedAlarma = 18;
const int sensor = 2;

struct Button {
  const uint8_t PIN;
  volatile bool pressed;
};

Button btn1 = {4, 0};
Button btn2 = {5, 0};

volatile uint8_t LEDS1_value = 0b00000001;
volatile uint8_t LEDS2_value = 0b00000000;

unsigned long button_time = 0;
unsigned long last_button_time = 0;
volatile uint32_t interruptContador = 0;
volatile bool cantidadPresionada;

// Configuración del timer
hw_timer_t * timer = NULL;
portMUX_TYPE timerMux = portMUX_INITIALIZER_UNLOCKED;

void IRAM_ATTR handlerTimerISR() {
  portENTER_CRITICAL_ISR(&timerMux);
  interruptContador++;
  portEXIT_CRITICAL_ISR(&timerMux);
}

void IRAM_ATTR handlerBT1ISR() {
  portENTER_CRITICAL_ISR(&timerMux);
  button_time = 250;

  if (button_time - last_button_time > 250) {
    cantidadPresionada++;
    btn1.pressed = true;
    last_button_time = button_time;
  }

  portEXIT_CRITICAL_ISR(&timerMux);
}

void IRAM_ATTR handlerBT2ISR() {
  portENTER_CRITICAL_ISR(&timerMux);
  button_time = 250;

  if (button_time - last_button_time > 250) {
    cantidadPresionada++;
    btn2.pressed = true;
    last_button_time = button_time;
  }

  portEXIT_CRITICAL_ISR(&timerMux);
}

void setup() {
  Serial.begin(115200);

  pinMode(btn1.PIN, INPUT_PULLUP);
  pinMode(btn2.PIN, INPUT_PULLUP);
  pinMode(LedAlarma, OUTPUT);

  for (int i = 0; i < 4; i++) {
    pinMode(LEDS1[i], OUTPUT);
    pinMode(LEDS2[i], OUTPUT);
  }

  timer = timerBegin(0, 80, true);
  timerAttachInterrupt(timer, &handlerTimerISR, true);
  timerAlarmWrite(timer, 250000, true);
  timerAlarmEnable(timer);

  attachInterrupt(btn1.PIN, handlerBT1ISR, FALLING);
  attachInterrupt(btn2.PIN, handlerBT2ISR, FALLING);

}

void loop() {
  if (interruptContador > 0) {
    portENTER_CRITICAL(&timerMux);
    interruptContador--;
    portEXIT_CRITICAL(&timerMux);
    cantidadPresionada++;
    LEDS2_value++;

    LEDS2_value & 0x0F;
  }

  uint8_t valoresLedsContador1 = LEDS1_value & 0x0F;
  uint8_t valoresLedsContador2 = LEDS2_value & 0x0F;
  for (int i = 0; i < 4; i++) {
    digitalWrite(LEDS1[i], valoresLedsContador1 & (1 << i));
  }

  for (int i = 0; i < 4; i++) {
    digitalWrite(LEDS2[i], valoresLedsContador2 & (1 << i));
  }

  //Programación de la alarma en forma de LED
  if (LEDS1_value == LEDS2_value) {
    digitalWrite(LedAlarma, HIGH);
    delay(2000);
    digitalWrite(LedAlarma, LOW);
    LEDS2_value = 0b00000000;
  }
  uint8_t touchSensor = touchRead(4);

  if (touchSensor < 30) {
    for (int i = 0; i < 4; i++) {
      digitalWrite(LEDS2[i], LOW);
    }
  } else {
    for (int i = 0; i < 4; i++) {
      digitalWrite(LEDS2[i], HIGH);
    }
  }
  delay(5000);
}