Waits for the transmission of outgoing serial data to complete. (Prior to Arduino 1.0, this instead removed any buffered incoming serial data.) flush() inherits from the Stream utility class.

Serial.flush()

Arduino Mega only:
Serial1.flush()
Serial2.flush()
Serial3.flush()

none

nothing

• begin()
• end()
• available()
• read()
• peek()
• parseInt()
• flush()
• print()
• println()
• write()
• SerialEvent()
• Stream.flush()

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