Data Structures | |
struct | fat16_dir_entry_struct |
Describes a directory entry. More... | |
Defines | |
#define | FAT16_ATTRIB_READONLY |
The file is read-only. | |
#define | FAT16_ATTRIB_HIDDEN |
The file is hidden. | |
#define | FAT16_ATTRIB_SYSTEM |
The file is a system file. | |
#define | FAT16_ATTRIB_VOLUME |
The file is empty and has the volume label as its name. | |
#define | FAT16_ATTRIB_DIR |
The file is a directory. | |
#define | FAT16_ATTRIB_ARCHIVE |
The file has to be archived. | |
#define | FAT16_SEEK_SET |
The given offset is relative to the beginning of the file. | |
#define | FAT16_SEEK_CUR |
The given offset is relative to the current read/write position. | |
#define | FAT16_SEEK_END |
The given offset is relative to the end of the file. | |
Functions | |
uint8_t | fat16_get_dir_entry_of_path (struct fat16_fs_struct *fs, const char *path, struct fat16_dir_entry_struct *dir_entry) |
Retrieves the directory entry of a path. | |
fat16_file_struct * | fat16_open_file (struct fat16_fs_struct *fs, const struct fat16_dir_entry_struct *dir_entry) |
Opens a file on a FAT16 filesystem. | |
void | fat16_close_file (struct fat16_file_struct *fd) |
Closes a file. | |
int16_t | fat16_read_file (struct fat16_file_struct *fd, uint8_t *buffer, uint16_t buffer_len) |
Reads data from a file. | |
int16_t | fat16_write_file (struct fat16_file_struct *fd, const uint8_t *buffer, uint16_t buffer_len) |
Writes data to a file. | |
uint8_t | fat16_seek_file (struct fat16_file_struct *fd, int32_t *offset, uint8_t whence) |
Repositions the read/write file offset. | |
uint8_t | fat16_resize_file (struct fat16_file_struct *fd, uint32_t size) |
Resizes a file to have a specific size. | |
uint8_t | fat16_create_file (struct fat16_dir_struct *parent, const char *file, struct fat16_dir_entry_struct *dir_entry) |
Creates a file. | |
uint8_t | fat16_delete_file (struct fat16_fs_struct *fs, struct fat16_dir_entry_struct *dir_entry) |
Deletes a file or directory. |
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Closes a file.
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Creates a file. Creates a file and obtains the directory entry of the new file. If the file to create already exists, the directory entry of the existing file will be returned within the dir_entry parameter.
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Deletes a file or directory. It is not checked if the file to delete is a directory. If a directory is deleted without first deleting its subdirectories and files, disk space occupied by these files will get wasted as there is no chance to release it and mark it as free.
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Retrieves the directory entry of a path. The given path may both describe a file or a directory.
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Opens a file on a FAT16 filesystem.
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Reads data from a file. The data requested is read from the current file location.
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Resizes a file to have a specific size. Enlarges or shrinks the file pointed to by the file descriptor to have exactly the specified size. If the file is truncated, all bytes having an equal or larger offset than the given size are lost. If the file is expanded, the additional bytes are allocated, but they keep their values.
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Repositions the read/write file offset. Changes the file offset where the next call to fat16_read_file() or fat16_write_file() starts reading/writing. If the new offset is beyond the end of the file, fat16_resize_file() is implicitly called, i.e. the file is expanded.
The new offset can be given in different ways determined by the
The resulting absolute offset is written to the location the
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Writes data to a file. The data is written to the current file location.
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