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()

Reference Home

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.