log_store.h

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#ifndef LOG_STORE_H
#define LOG_STORE_H
 
#include <stdint.h>
#include "log_format.h"
 
#define LOG_LIST_MAX 64u
 
typedef struct {
    void    *ctx;
    uint32_t size;                                                     
    int    (*read)(void *ctx, uint32_t addr, void *buf, uint32_t n);
    int    (*prog)(void *ctx, uint32_t addr, const void *buf, uint32_t n); 
    int    (*erase)(void *ctx, uint32_t addr);                         
} log_flash_t;
 
typedef struct {
    uint16_t id;
    uint16_t first;          
    uint16_t nsect;
    uint8_t  truncated;      
    uint8_t  active;         
    uint32_t t0_ms;
} log_entry_t;
 
int      log_mount(const log_flash_t *f);          
uint8_t  log_count(void);
const log_entry_t *log_entry(uint8_t index);       
const log_entry_t *log_find(uint16_t id);
uint8_t  log_used_pct(void);
 
int      log_open(uint32_t t0_ms);                 
int      log_append(uint8_t type, const void *payload, uint8_t len);
int      log_close(void);
uint8_t  log_is_open(void);
 
int      log_read(uint16_t id, uint32_t offset, void *buf, uint32_t n);
uint32_t log_size(uint16_t id);                    
int      log_erase_all(void);
 
#endif /* LOG_STORE_H */