lane.h

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#pragma once

 
#include "fl/stl/stdint.h"
#include "fl/stl/span.h"
#include "fl/stl/vector.h"
#include "fl/stl/noexcept.h"
 
namespace fl {
namespace spi {
 
// Forward declaration
class MultiLaneDevice;
 
// ============================================================================
// Lane - Single lane in a multi-lane SPI device
// ============================================================================

class Lane {
public:
    void write(const u8* data, size_t size) FL_NO_EXCEPT;

    fl::span<u8> getBuffer(size_t size) FL_NO_EXCEPT;

    size_t id() const FL_NO_EXCEPT { return mLaneId; }

    size_t bufferSize() const FL_NO_EXCEPT { return mBuffer.size(); }

    void clear() FL_NO_EXCEPT { mBuffer.clear(); }
 
private:
    friend class MultiLaneDevice;

    Lane(size_t lane_id, MultiLaneDevice* parent) FL_NO_EXCEPT;

    fl::span<const u8> data() const FL_NO_EXCEPT;
 
    size_t mLaneId;
    fl::vector<u8> mBuffer;  // Buffered data for this lane
};
 
} // namespace spi
} // namespace fl