Method setPollNeededCallback

src/fl/channels/driver.h:240–242

@brief Install the manager-owned poll-needed callback for ISR wakeups. Implementations that can signal from an ISR should store this callback and invoke it after updating their own state. Implementations without such a signal can ignore it; the manager will still make progress via bounded timeout slices.

    /// such a signal can ignore it; the manager will still make progress via
    /// bounded timeout slices.
    virtual void setPollNeededCallback(PollNeededCallback callback) FL_NOEXCEPT {
        (void)callback;
    }

    /// @brief Block until this driver finishes any in-flight transmit.
    ///