설명
readStringUntil() reads characters from the serial buffer into a String. The function terminates if it times out (see setTimeout()).
Serial.readStringUntil() inherits from the Stream utility class.
문법
Serial.readStringUntil(terminator)
매개변수
terminator : the character to search for (char)
반환
The entire String read from the serial buffer, up to the terminator character