ESP32 delay required after Serial.begin

Thanks, @gfvalvo

Sure, my code was just to measure :wink: the required period somehow.

BTW: As you mention "native USB", it's interesting to me that

  Serial.begin(115200);
  while (!Serial) delay(10);  // waiting for native USB Serial to become alive
  delay (500); // You still have to wait a while on an ESP32 ...

To be clear, it's, not a problem, but just curiosity, how the multihreading OS of an ESP, or whatever (?) causes this behavior.