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

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  String str = readTerminal();  
  if (str != "")Serial.print(str);
}


String readTerminal(){
  String strTerminal = "";
  if (Serial.available()){
    strTerminal = Serial.readStringUntil('\0'); 
  }
  return strTerminal;
}