#define POTENCIOMETRO 39
#define LED_RED 5
#define LED_GREEN 4
#define LED_BLUE 2

float calcTensao(int valorPot){
  return (3.3 / 4095) * valorPot;
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(LED_RED, OUTPUT);
  pinMode(LED_GREEN, OUTPUT);
  pinMode(LED_BLUE, OUTPUT);
  pinMode(POTENCIOMETRO, INPUT);
}

void loop() {
  int valor_potenciometro = analogRead(POTENCIOMETRO);
  float tensao = calcTensao(valor_potenciometro);
  Serial.print("Tensao: ");
  Serial.print(tensao);
  Serial.print("/ AD: ");
  Serial.println(valor_potenciometro);

  if (tensao <= 1) {
    digitalWrite(LED_RED, LOW);
    digitalWrite(LED_GREEN, LOW);
    digitalWrite(LED_BLUE, LOW);
  } else if (tensao <= 2){
    digitalWrite(LED_RED, LOW);
    digitalWrite(LED_GREEN, HIGH);
    digitalWrite(LED_BLUE, LOW);
  } else if (tensao <= 3){
    digitalWrite(LED_RED, LOW);
    digitalWrite(LED_GREEN, LOW);
    digitalWrite(LED_BLUE, HIGH);
  } else {
    digitalWrite(LED_RED, HIGH);
    digitalWrite(LED_GREEN, LOW);
    digitalWrite(LED_BLUE, LOW);
  }

  delay(10); // this speeds up the simulation
}