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:
Initial characters that are not digits or a minus sign, are skipped;
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(char skipChar)
Parameters
Serial: serial port object. See the list of available serial ports for each board on the Serial main page. skipChar: used to skip the indicated char in the search. Used for example to skip thousands divider.
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