metadata.h

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// Copyright (c) 2024 anabrid GmbH
// Contact: https://www.anabrid.com/licensing/
// SPDX-License-Identifier: MIT OR GPL-2.0-or-later
 
#pragma once
 
#include <array>
#include <cstdint>
 
#include <bus/bus.h>
#include <bus/functions.h>
 
namespace metadata {
 
template <std::size_t dataSize> class MetadataMemory : public functions::DataFunction {
private:
  std::array<uint8_t, dataSize> data;
 
public:
  explicit MetadataMemory(const unsigned short address, const SPISettings &spi_settings)
      : functions::DataFunction(address, spi_settings), data{0} {}
 
  virtual size_t read_from_hardware(size_t byte_offset, size_t length, uint8_t *buffer) const = 0;
 
  size_t read_from_hardware() { return read_from_hardware(0, data.size(), data.data()); };
 
  template <class Layout_> const Layout_ &as() const { return *((Layout_ *)(data.data())); }
};
 
} // namespace metadata