Arduino - SerialAvailable

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## int serialAvailable()

#### Description

Get the number of bytes (characters) available for reading over the serial port.

### Parameters

None

#### Returns

the number of bytes available, or 0 if there aren't any

#### See also

- beginSerial
- serialRead
- serialWrite
- printByte
- printString
- printInteger
- printHex
- printOctal
- printBinary

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