Checks whether a timeout has occured since the last time the flag was cleared.
This flag is set is set whenever a timeout occurs and cleared when
Wire.clearWireTimeoutFlag() is called, or when the timeout is changed using
bool: The current value of the flag
This function was not available in the original version of the Wire library and might still not be available on all platforms. Code that needs to be portable across platforms and versions can use the
WIRE_HAS_TIMEOUT macro, which is only defined when
Wire.clearWireTimeout() are all available.