Reference   Language | Libraries | Comparison | Changes

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

Reference Home

Corrections, suggestions, and new documentation should be posted to the Forum.

The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.