Serial.availableForWrite()

Descrição

Retorna o número de bytes (caracteres) livres no buffer de transmissão serial que podem ser ocupados sem bloquear a operação de trasnmissão.

Sintaxe

Serial.availableForWrite()

Parâmetros

Retorna

O número de bytes livres no buffer de transmissão.

Código de Exemplo

String myString = "Welcome to ArduinoGetStarted.com!\n"; void setup() { Serial.begin(9600); // opens serial port, sets data rate to 9600 bps int wlen = Serial.availableForWrite(); // prints the received data Serial.print("TX buffer size: "); Serial.println(wlen); } void loop() { // check if Tx buffer is enough to write the string if (Serial.availableForWrite() > myString.length()) { // prints the string Serial.print(myString); delay(1000); } }
  • The result on Serial Monitor:
COM6
Send
TX buffer size: 63 Welcome to ArduinoGetStarted.com! Welcome to ArduinoGetStarted.com! Welcome to ArduinoGetStarted.com! Welcome to ArduinoGetStarted.com!
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

※ Notas e Advertências:

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)* 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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