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


  int val = 123;
  char cstr[sizeof(val)];
  itoa(val, cstr, 10);
  Serial.println(cstr);


}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}