Wire
- begin()
- end()
- requestFrom()
- beginTransmission()
- endTransmission()
- write()
- available()
- read()
- setClock()
- onReceive()
- onRequest()
- setWireTimeout()
- clearWireTimeoutFlag()
- getWireTimeoutFlag()
专题
ArduinoWire.available()
This function returns the number of bytes available for retrieval with read(). This function should be called on a controller device after a call to requestFrom() or on a peripheral inside the onReceive() handler. available() inherits from the Stream utility class.
Syntax
Wire.available()
Parameters
None.
Returns
The number of bytes available for reading.
