read()
描述
讀取序列埠收到的資料。read()
是繼承於 Stream 類別。
語法
適用所有板子:
Serial.read()
Serial1.read()
適用 86Duino ONE:
Serial2.read()
Serial3.read()
Serial485.read()
適用 86Duino EduCake:
Serial2.read()
Serial3.read()
Serial232.read()
參數
無
回傳
讀取傳進來的 byte 值 (假如沒有收到任何資料,則回傳 -1) – int 型別
範例
int incomingByte = 0; // 儲存值的變數 void setup() { Serial.begin(9600); // 設定 Serial 為 9600 鮑率 } void loop() { // 只有在收到值的時候才送資料 if (Serial.available() > 0) { // 讀取傳送進來的 byte: incomingByte = Serial.read(); // 說你收到了什麼 Serial.print("I received: "); Serial.println(incomingByte, DEC); } }
See also
- Serial
- available()
- begin()
- end()
- find()
- findUntil()
- flush()
- parseFloat()
- parseInt()
- peek()
- print()
- println()
- readBytes()
- readBytesUntil()
- setTimeout()
- write()
- serialEvent()
The text of the 86Duino reference is a modification of the Arduino reference, and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.