Serial.readString()

설명

Serial.readString()직렬 버퍼에서 하나의 문자열로 문자를 읽습니다. 시간이 초과되면 함수가 종료됩니다 (Serial.setTimeout() 참조).

Serial.readString()Stream 유틸리티 클래스에서 상속합니다.

문법

Serial.readString()

매개변수

  • Nothing

반환값

  • 시리얼 버퍼에서 읽어들인 하나의 문자열입니다.

예제 코드

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  
  • 시리얼 모니터에 결과:
  • COM6
    Send
    I received: HELLO
    Autoscroll Show timestamp
    Clear output
    9600 baud  
    Newline  

※ 주의 및 경고:

  • 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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