int data = 0;
const int8_t pinPotensio = 12;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!"); 
  Serial.println(ubahData(10)); //?
  Serial.println(ubahData(10)); //? 
  Serial.println(ubahData(30)); //? 
}

void loop() {
  // put your main code here, to run repeatedly:
  // bacaPotensio(); 
  // bacaPotensio(4); 
}

void bacaPotensio(){
  Serial.print("Nilai Potensio pin 12: ");
  Serial.println(analogRead(pinPotensio)); 
  delay(10); // this speeds up the simulation
} 

void bacaPotensio(int8_t pin){
  Serial.print("Nilai Potensio pin ");
  Serial.print(pin);
  Serial.print(": ");
  Serial.println(analogRead(pin)); 
  delay(10); // this speeds up the simulation
}

int16_t ubahData(int8_t data1){
  Serial.println(data1);
  data = data + data1;
  return data;
}