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If no valid integer is found within one second (adjustable through Serial.setTimeout() ) a default value of 0 will be returned.
(:source lang=arduino:)
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Looks for the next valid integer in the incoming serial stream. parseInt() inherits from the Stream utility class.
Serial.parseInt()
Arduino Mega only:
Serial1.parseInt()
Serial2.parseInt()
Serial3.parseInt()
none
int : the next valid integer
(:source lang=arduino:)
(:sourceend:)
(:include Reference/SerialSeeAlsoIncludes:)