#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int pinPot = 34;
const int pinLed = 2;

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

  // I2C
  Wire.begin(21, 22);
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.print("Sistema iniciado");
  delay(1200);
  lcd.clear();

  pinMode(pinLed, OUTPUT); // necesario para Wokwi
}

void loop() {
  int adcValue = analogRead(pinPot);
  int pwmValue = map(adcValue, 0, 4095, 0, 255);

  // PWM simulado en Wokwi
  analogWrite(pinLed, pwmValue);

  // LCD
  lcd.setCursor(0, 0);
  lcd.print("ADC: ");
  lcd.print(adcValue);
  lcd.print("     ");

  lcd.setCursor(0, 1);
  lcd.print("PWM: ");
  lcd.print(pwmValue);
  lcd.print("     ");

  // Serial (opcional)
  Serial.print("ADC: ");
  Serial.print(adcValue);
  Serial.print(" | PWM: ");
  Serial.println(pwmValue);

  delay(200);
}