read()
描述
從檔案讀取資料。
read()
是從 Stream
繼承而來。
語法
file.read()
參數
file
:被 SD.open()
回傳的 File
物件
回傳
byte
:回傳檔案未讀資料中最前面的字元,如果沒有未讀資料可以讀回傳 -1
See Also
- available()
- peek()
- write()
- Stream.read()
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.