Method beginTransmission

tests/fl/channels/spi_channel.cpp:236–245

private:
    void beginTransmission(fl::span<const ChannelDataPtr> channels) {
        mTransmitCount++;

        // Capture transmitted data from first channel
        if (!channels.empty() && channels[0]) {
            const auto& data = channels[0]->getData();
            mLastTransmittedData.clear();
            mLastTransmittedData.insert(mLastTransmittedData.end(), data.begin(), data.end());
        }
    }

    fl::string mName;
    fl::vector<ChannelDataPtr> mEnqueuedChannels;