fat.h

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#pragma once
 
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
 
#define MAX_FILE_NAME           (256)
 
typedef enum
{
    FILE_READ       = 0x01, 
    FILE_WRITE      = 0x02, 
    FILE_CREATE     = 0x08, 
    FILE_CREATE_NEW = 0x04, 
    FILE_APPEND     = 0x30  
} file_access_t;
 
typedef enum
{
    FAT_OK,            
    FAT_IO_ERROR,      
    FAT_NOT_FOUND,     
    FAT_ACCESS_DENIED, 
    FAT_ERR_NOTSET     
} fat_error_code_t;
 
typedef struct
{
    uint8_t  hour;   
    uint8_t  minute; 
    uint8_t  second; 
    uint8_t  day;    
    uint8_t  month;  
    uint16_t year;   
} fildatetime_t;
 
typedef struct
{
    fildatetime_t create_time;
 
    fildatetime_t modify_time;
 
    union
    {
        uint8_t a8; 
        struct
        {
            bool r_only    : 1; 
            bool archive   : 1; 
            bool system    : 1; 
            bool hidden    : 1; 
            bool directory : 1; 
        } flags;
 
    } attrib;
 
    size_t filesize;
 
    char full_name[MAX_FILE_NAME];
 
} filinfo_t;
 
void fat_getcwd(char *cwd);
 
bool fat_exists(char const* path);
 
bool fat_chdir(char const* cwd);
 
bool fat_mkdir(char const* path);
 
bool fat_unlink(char const* path);
 
bool fat_mount(char const* path);
 
bool fat_unmount(char const* path);
 
bool fat_stat(char const* path, filinfo_t *fno);
 
fat_error_code_t fat_getcode(void);
 
void fat_fclose(int fd);
 
int fat_fopen(char const* path, file_access_t mode);
 
size_t fat_fsize(int fd);
 
size_t fat_fread(int fd, void *buffer, size_t nread);
 
size_t fat_fwrite(int fd, void const* buffer, size_t nwrite);
 
void fat_ls(char const* path, void const* ls_ctx, 
    void (*nxt_file)(void const* ls_ctx, filinfo_t const* fi));