ardupilot/libraries/AP_HAL/Storage.h

#ifndef __AP_HAL_STORAGE_H__
#define __AP_HAL_STORAGE_H__

#include <stdint.h>
#include "AP_HAL_Namespace.h"

class AP_HAL::Storage {
public:
    virtual void init(void *) { }
    virtual void init() { }
    virtual void read_block(void *dst, uint16_t src, size_t n) = 0;
    virtual void write_block(uint16_t dst, const void* src, size_t n) = 0;
};

#endif // __AP_HAL_STORAGE_H__