Serial.readStringUntil()

Descripción

Serial.readStringUntil() lee los caracteres del buffer serie en una cadena. La función termina si se detecta el carácter terminador o el tiempo de espera se ha alcanzado (ver setTimeout()).

Esta función es parte de la clase Stream, y es llamada por cualquier clase que herede de ella (Wire, Serial, etc.). Ver la página principal de la claseStream para obtener más información.

Sintaxis

Serial.readStringUntil(delimiter)

Parámetros

  • delimiter: el caracter a buscar (char)

Retornos

  • La cadena completa leída del buffer serie, hasta que se detecte el carácter terminador.

Ejemplo

void setup() { Serial.begin(9600); // opens serial port, sets data rate to 9600 bps } void loop() { // check if data is available if (Serial.available() > 0) { // read the incoming string: String incomingString = Serial.readStringUntil('\n'); // prints the received data Serial.print("I received: "); Serial.println(incomingString); } }
  • Select Newline at the ending selection of Serial Monitor
  • Type "HELLO" on Serial Monitor
  • Click Send button:
  • COM6
    Send
    Autoscroll Show timestamp
    Clear output
    9600 baud  
    Newline  
  • The result on Serial Monitor:
  • COM6
    Send
    I received: HELLO
    Autoscroll Show timestamp
    Clear output
    9600 baud  
    Newline  

※ Nota:

Serial functions are not only used for the communication between an Arduino board and Serial Monitor of Arduino IDE but also used for the communication between:

  • An Arduino board and other Arduino board
  • An Arduino board and other sensors/devices
  • An Arduino board and computer (any Serial software on computer)

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