Arduino Reference - StreamRead

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## read()

#### Description

read() reads characters from an incoming stream to the buffer.

This function is part of the Stream class, and is called by any class that inherits from it (Wire, Serial, etc). See the Stream class main page for more information.

#### Syntax

stream.read()

#### Parameters

stream : an instance of a class that inherits from Stream.

#### Returns

the first byte of incoming data available (or -1 if no data is available)

#### See also

- Stream

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