Method write

src/fl/channels/spi.h:119–124

    /// @endcode
    template<typename... Spans>
    WriteResult write(Spans&&... lanes) {
        if (!device) {
            return WriteResult("SPI device not initialized");
        }
        return device->write(fl::forward<Spans>(lanes)...);
    }

    /// @brief Wait for async write operation to complete
    /// @param timeout_ms Maximum time to wait in milliseconds (default: wait forever)