Description
Looks for the next valid integer in the incoming serial. The function terminates if it times out (see Serial.setTimeout()).
Serial.parseInt() inherits from the Stream utility class.
In particular:
-
Parsing stops when no characters have been read for a configurable time-out value, or a non-digit is read;
-
If no valid digits were read when the time-out (see Serial.setTimeout()) occurs, 0 is returned;
Syntax
Serial.parseInt()
Serial.parseInt(lookahead)
Serial.parseInt(lookahead, ignore)
Parameters
Serial: serial port object. See the list of available serial ports for each board on the Serial main page.
lookahead: the mode used to look ahead in the stream for an integer. Allowed data types: LookaheadMode. Allowed lookahead values:
-
SKIP_ALL: all characters other than digits or a minus sign are ignored when scanning the stream for an integer. This is the default mode. -
SKIP_NONE: Nothing is skipped, and the stream 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
Returns
long : the next valid integer