const uint8_t LedTest = 22;
const uint8_t keyTest = 18;

const int adcPin = 4;
uint8_t valueADC;

const int pwmPin = 17;
uint8_t brilloLed = 0;


void setup() 
{
  pinMode(LedTest, OUTPUT);
  pinMode(keyTest, INPUT_PULLUP);
  /////////////////////////////////////////////////////////////
  //set the resolution to 12 bits (0-4096)
  analogReadResolution(12); 
  analogSetAttenuation(ADC_11db);
  /////////////////////////////////////////////////////////////
  pinMode(pwmPin, OUTPUT);
  /////////////////////////////////////////////////////////////
 // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}

void loop() 
{
  if(digitalRead(keyTest) == HIGH)
  {
    digitalWrite(LedTest, HIGH);
  }

  if(digitalRead(keyTest) == LOW)
  {
    digitalWrite(LedTest, LOW);
  }
  ////////////////////////////////////////////////////////////////////
  Serial.print("El valor del potenciometro es =");
  valueADC = (uint8_t)(analogRead(adcPin) >> 4);
  Serial.print(valueADC, DEC);
  Serial.println("");


  //digitalWrite(pwmPin, HIGH);
  analogWrite(pwmPin, valueADC);
  ////////////////////////////////////////////////////////////////////
  delay(500); // this speeds up the simulation
}