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Serial

availableForWrite()

Description

Get the number of bytes (characters) available for writing in the serial buffer without blocking the write operation.

Syntax

Serial.availableForWrite()

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

Parameters

none

Returns

the number of bytes available to write

See also

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

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