Arduino File.parseFloat()

Description

The File.parseFloat() function returns the first valid floating point number from the current position. parseFloat() is terminated by the first character that is not a floating point number. The function terminates if it times out (see File.setTimeout()).

The File.parseFloat() function inherits from the Stream utility class.

Syntax

file.parseFloat()

file.parseFloat(lookahead)

file.parseFloat(lookahead, ignore)

Parameter Values

• file : an instance of a class that inherits from File.
• lookahead: the mode used to look ahead in the file for a floating point number. Allowed data types: LookaheadMode. Allowed lookahead values:
• SKIP_ALL: all characters other than a minus sign, decimal point, or digits are ignored when scanning the file for a floating point number. This is the default mode.
• SKIP_NONE: Nothing is skipped, and the file is not touched unless the first waiting character is valid.
• SKIP_WHITESPACE: Only tabs, spaces, line feeds, and carriage returns are skipped.
• ignore: used to skip the indicated char in the search. Used for example to skip thousands divider. Allowed data types: char

Return Values

• Data type: float.

Example Code

Tutorials

• Arduino - Micro SD Card
• Arduino - Write Variable to SD Card
• Arduino - Read Config from SD Card
• Arduino - Log Data with Timestamp to SD Card

See Also

• Arduino SD Card Library Reference
• Arduino SD.begin()
• Arduino SD.exists()
• Arduino SD.mkdir()
• Arduino SD.rmdir()
• Arduino SD.remove()
• Arduino SD.open()
• Arduino File.close()
• Arduino File.name()
• Arduino File.available()
• Arduino File.flush()
• Arduino File.peek()
• Arduino File.position()
• Arduino File.print()
• Arduino File.println()
• Arduino File.seek()
• Arduino File.size()
• Arduino File.read()
• Arduino File.write()
• Arduino File.isDirectory()
• Arduino File.openNextFile()
• Arduino File.rewindDirectory()
• Arduino File.find()
• Arduino File.findUntil()
• Arduino File.readBytes()
• Arduino File.readBytesUntil()
• Arduino File.readString()
• Arduino File.readStringUntil()
• Arduino File.parseInt()
• Arduino File.parseFloat()
• Arduino File.setTimeout()