storage_api.h

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#pragma once
#include <stdint.h>
#include "statuses.h"
 
using byte = uint8_t;
 
struct storage_api_t {
    byte (*read)(uint16_t address);
 
    void (*write)(uint16_t address, byte val);
 
    uint16_t (*length)(void);
 
    uint16_t (*getMaxWriteBlockSize)(const statuses &current);
};
 
storage_api_t getEEPROMStorageApi(void);
 
bool update(const storage_api_t &api, uint16_t address, byte value);
 
void updateBlock(const storage_api_t &api, uint16_t address, const byte* pFirst, const byte* pLast);
 
uint16_t updateBlockLimitWriteOps(const storage_api_t &api, uint16_t address, const byte* pFirst, const byte* pLast, uint16_t maxWrites);
 
template< typename T > 
static inline void updateObject(const storage_api_t &api, const T &t, uint16_t address) {
    updateBlock(api, address, (const byte*)&t, ((const byte*)&t)+sizeof(T));
}
 
uint16_t loadBlock(const storage_api_t &api, int16_t address, byte *pFirst, const byte *pLast);
 
template< typename T > 
static inline T &loadObject(const storage_api_t &api, uint16_t address, T &t ){
  byte *pFirst = (byte*) &t;
  const byte *pLast = pFirst + sizeof(T);
  (void)loadBlock(api, address, pFirst, pLast);
  return t;
}
 
void fillBlock(const storage_api_t &api, uint16_t address, uint16_t length, byte value);
 
void moveBlock(const storage_api_t &api, uint16_t dest, uint16_t source, uint16_t size);