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en:arduino:libraries:filewrite

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en:arduino:libraries:filewrite [2016/12/25 22:15] (当前版本)
行 1: 行 1:
 +[[en:​arduino:​libraries:​sd|SD]] : File class
 +====== write() ======
  
 +
 +===== Description =====
 +
 +Write data to the file.
 +===== Syntax =====
 +
 +file.write(data) ​
 +\\ file.write(buf,​ len)
 +===== Parameters =====
 +
 +file: an instance of the File class (returned by SD.open())
 +
 +data: the byte, char, or string (char *) to write
 +
 +buf: an array of characters or bytes
 +
 +len: the number of elements in buf
 +===== Returns =====
 +
 +byte
 +\\ write() will return the number of bytes written, though reading that number is optional
 +===== See Also =====
 +
 +  * print()
 +  * println()
 +  * read()
 +[[en:​arduino:​libraries|Reference Home]]
en/arduino/libraries/filewrite.txt · 最后更改: 2016/12/25 22:15 (外部编辑)