Serial.readString()

Descripción

Serial.readString() lee los caracteres del buffer serie en una cadena. La función se anula si 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.readString()

Parámetros

  • Ninguno

Retornos

  • Una cadena leída del buffer serie.

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.readString(); // prints the received data Serial.print("I received: "); Serial.println(incomingString); } }
  • Type "HELLO" on Serial Monitor and 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.readString() may read a single incoming string in multiple times (resulting in multiple fragments). To read a single string at one time, use Serial.readStringUntil() with delimiter instead.
  • 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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