littlefs.h

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#ifndef INFUSE_SDK_INCLUDE_INFUSE_FS_LITTLEFS_H_
#define INFUSE_SDK_INCLUDE_INFUSE_FS_LITTLEFS_H_
 
#include <stdint.h>
 
#include <zephyr/sys/slist.h>
 
#ifdef __cplusplus
extern "C" {
#endif


enum infuse_littlefs_folder {
        INFUSE_LFS_FOLDER_GENERAL = 0,
        INFUSE_LFS_FOLDER_ALGORITHMS = 1,
        INFUSE_LFS_FOLDER_A_GNSS = 2,
        INFUSE_LFS_FOLDER_COPY = 3,
};

#define INFUSE_LITTLEFS_METADATA_TYPE 0x1F

struct infuse_littlefs_metadata {
        uint32_t timestamp;
        uint32_t identifier;
        uint32_t crc;
} __packed;

struct infuse_littlefs_fs_info {
        uint32_t disk_version;
        uint32_t block_size;
        uint32_t block_count;
        uint32_t blocks_used;
};

struct infuse_littlefs_cb {
        void (*file_created)(enum infuse_littlefs_folder folder, uint32_t file,
                             struct infuse_littlefs_metadata *meta, void *user_data);

        void (*file_deleted)(enum infuse_littlefs_folder folder, uint32_t file, void *user_data);

        void *user_data;

        sys_snode_t node;
};

int infuse_littlefs_init(void);

int infuse_littlefs_fs_info(struct infuse_littlefs_fs_info *info);

void infuse_littlefs_register_cb(struct infuse_littlefs_cb *cb);

bool infuse_littlefs_unregister_cb(struct infuse_littlefs_cb *cb);
 
#ifdef CONFIG_ZTEST

void infuse_littfs_format(void);

void infuse_littlefs_reset(void);
 
#endif /* CONFIG_ZTEST */

int infuse_littlefs_file_size(enum infuse_littlefs_folder folder, uint32_t file);

int infuse_littlefs_file_metadata(enum infuse_littlefs_folder folder, uint32_t file,
                                  struct infuse_littlefs_metadata *metadata);

typedef bool (*infuse_littlefs_file_cb)(enum infuse_littlefs_folder folder, uint32_t file,
                                        void *user_data);

int infuse_littlefs_folder_iter(enum infuse_littlefs_folder folder, infuse_littlefs_file_cb cb,
                                void *user_data);

int infuse_littlefs_file_open(enum infuse_littlefs_folder folder, uint32_t file);

int infuse_littlefs_file_read(void *data, size_t data_len);

int infuse_littlefs_file_seek(uint32_t offset);

int infuse_littlefs_file_create(enum infuse_littlefs_folder folder, uint32_t file,
                                struct infuse_littlefs_metadata *metadata);

int infuse_littlefs_file_write(const void *data, size_t data_len);

int infuse_littlefs_file_close(void);

int infuse_littlefs_file_delete(enum infuse_littlefs_folder folder, uint32_t file);

int infuse_littlefs_file_crc32(enum infuse_littlefs_folder folder, uint32_t file, uint32_t max_len,
                               uint32_t *crc32_ieee, void *working_mem, size_t working_mem_len);

 
#ifdef __cplusplus
}
#endif
 
#endif /* INFUSE_SDK_INCLUDE_INFUSE_FS_LITTLEFS_H_ */