Serial.availableForWrite()

설명

쓰기 작업을 차단하지 않고 직렬 버퍼에 쓸 수있는 바이트 (문자) 수를 가져옵니다.

문법

Serial.availableForWrite()

Arduino Mega only:

Serial1.availableForWrite()

Serial2.availableForWrite()

Serial3.availableForWrite()

매개변수

  • Nothing

반환값

  • 쓰기 가능한 바이트 크기

예제 코드

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); } }
  • 시리얼 모니터에 결과:
  • 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  

※ 주의 및 경고:

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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