Arduino Reference - WireAvailable

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## Wire.available()

#### Description

Returns the number of bytes available for retrieval with receive(). This should be called on a master device after a call to requestFrom() or on a slave inside the onReceive() handler.

available() inherits from the Stream utility class.

#### Parameters

None

#### Returns

The number of bytes available for reading.

#### See Also

- Wire.receive()
- Stream.available()
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