#include <TM1637.h>  // Grove 4-Digit Display
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

const int CLK = 19;
const int DIO = 18;

TM1637 tm(CLK, DIO);

// Configuración básica
#define I2C_ADDR 0x27
LiquidCrystal_I2C lcd(I2C_ADDR, 20, 4);

const  unsigned int digitos[10] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};


struct Button {
  const uint8_t PIN;
  bool pressed;
  uint32_t lastDebounceTime;  // <-- NUEVO: para hacer antirrebote

};

Button button_up = {17, false,0};
Button button_down = {16, false, 0};
Button button_enter = {4, false, 0};

static uint32_t numberKeyPresses = 0;
const uint32_t debounceDelay = 20; // 50 ms para ignorar rebotes

void IRAM_ATTR isr_button_up() {
  uint32_t currentTime = millis();
  if ((currentTime - button_up.lastDebounceTime) > debounceDelay) {
    if (digitalRead(button_up.PIN) == LOW) { // Confirmamos que realmente se presionó
      numberKeyPresses += 1;
      button_up.pressed = true;
      button_up.lastDebounceTime = currentTime; // Actualizamos el tiempo de último rebote
    }
  }
}

void IRAM_ATTR isr_button_down() {
  uint32_t currentTime = millis();
  if ((currentTime - button_down.lastDebounceTime) > debounceDelay) {
    if (digitalRead(button_down.PIN) == LOW) { // Confirmamos que realmente se presionó
      numberKeyPresses -= 1;
      button_down.pressed = true;
      button_down.lastDebounceTime = currentTime; // Actualizamos el tiempo de último rebote
    }
  }
}

void setup() {
  // tm1637
  tm.init();
  tm.set(BRIGHT_TYPICAL);
  tm.displayStr((char *)"hola");
  // Serial
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  Serial.println("Control con interrupción externa");
  // Configuracion del pulsador de UP
  pinMode(button_down.PIN, INPUT_PULLUP);
  attachInterrupt(button_down.PIN, isr_button_down, FALLING);
  // Configuracion del pulsador de DOWN
  pinMode(button_up.PIN, INPUT_PULLUP);
  attachInterrupt(button_up.PIN, isr_button_up, FALLING);
  //-----------
  // Iniciar LCD
  lcd.init();
  lcd.backlight();

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Motor:");


}

void loop() {
  // tarea principal
  //tm.displayStr((char *)"hola");
  //delay(100);
  //tm.displayStr((char *)"Peru");
  //delay(100);
  // loop
  //tm.displayStr((char *)"Curso de micros 2025 xdxd...", 300);
  //delay(100);
  if (button_up.pressed) {
    Serial.printf("Button UP has been pressed %u times\n", numberKeyPresses);
    button_up.pressed = false;
  }

  if (button_down.pressed) {
    Serial.printf("Button DOWN has been pressed %u times\n", numberKeyPresses);
    button_down.pressed = false;
  }
  static uint32_t lastMillis = 0;
  if (millis() - lastMillis > 60000) {
    lastMillis = millis();
    detachInterrupt(button_up.PIN);
    Serial.println("Interrupt Detached!");
  }
}