read()

描述

从档案读取资料。

read() 是从 Stream 继承而来。

语法


file.read()

参数

file:被 SD.open() 回传的 File 物件

回传

byte:回传档案未读资料中最前面的字元,如果没有未读资料可以读回传 -1

See Also

available()
peek()
write()
Stream.read()


函式库参考主页面

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.