poll()

virtual DriverState fl::IChannelDriver::poll ( )

pure virtual

Query driver state and perform maintenance.

Returns

DriverState containing state and optional error message

Note

Non-blocking. Returns immediately with current hardware status.

Implementations should use this to:

• Check hardware transmission status
• Clear channel "in use" flags when transmission completes
• Return error message via DriverState when state == ERROR

Implemented in fl::anonymous_namespace{channel.cpp.hpp}::StubChannelEngine, and fl::SpiChannelEngineAdapter.

References fl::FL_NO_EXCEPT, and poll().

Referenced by poll(), waitForReady(), and waitForReadyOrDraining().

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