FAT File System - Embedded FAT12, FAT16 & FAT32 File System

FAT File System: FAT12, FAT16, FAT32 and VFAT File System Source Code for Embedded Applications and Devices.

FAT File System Overview

FAT File System (FAT FS) from Zeeis enables the embedded developer to easily and quickly integrate the MS-DOS/Windows compatible file system interoperability with all major operating systems into any devices. It has tested on several real time operating systems and also can used with no RTOS. This high performance source code has been optimized for minimum memory consumption in RAM and ROM, low cost and high speed.

In 2008, Zeeis File System product shipped in over 25 million devices, which is the leading file system product for mobile, consumer electronics and storage applications.

Zeeis Embedded FAT File System is reliable, full-featured, high-performance FAT12/16/32 and VFAT (long file names) file system for MCUs, CPUs and DPSs. It is a source code product designed for embedded applications that require the access PC-compatible storage media and it supports fixed and removable media, such as Secure Digital (SD), SDHC Cards, MultiMediaCard (MMC), Compact Flash Cards, ATA/IDE Hard Drives, SATA Hard Drives, RAM Disk, USB Mass Storage, DiskOnChip, NAND Flash, NOR Flash and other devices.

Embedded FAT File System with full source code, it is consistent ANSI C code with extensive comments and has been tested using vast majority development tools included ARM STD, ARM ADS, ARM RVDS, GNU GCC, Keil and Visual C++. The file systems accessed via a unified standard API, POSIX-compatible interface for file operations.

FAT File System Features

Industry Standard FAT Support: FAT12, FAT16, FAT32 and VFAT (Long file name)
Fully MS DOS/Windows-compatible FAT file system
Processor and RTOS independent
100% ANSI C source code for guaranteed portability
Optimized performance and reliability for limited resources MCUs/DSPs
RAM and ROM resources usage highly scalable by configurable features
Extremely small footprint: Lite Edition <1KB RAM / 4KB ROM, Standard Edition: <2K RAM / <10K ROM
POSIX-compatible interface (fopen(), fread(),fwrite(), fclose(), etc.)
Media format and partition creation
Run-time media errors handling
Extensive code comments and developer’s document
Sample applications and device drivers
1 year free technical support for unlimited number of support cases
1 year free upgrades
Royalty-free & Business-friendly License

Media Device Support

Secure Digital Cards: SD, SDHC, microSD, microSDHC
CompactFlash
MultiMediaCard (MMC)
USB
SATA
ATA/IDE
PCMCIA
NAND Flash
NOR Flash
DataFlash

FAT File System Application Programming Interface

FS_mount	Mount the drive and create the cache buffer for embedded FAT file system.
FS_unmount	Free all resources of the embedded FAT file system.
FS_format	Format the drive.
FS_size	Get the drive and FAT file system size information.
FS_mkdir	Create a directory.
FS_chdir	Change the current directory.
FS_rmdir	Remove empty directory.
FS_getCWD	Return the current directory path.
FS_opendir	Open a directory.
FS_closedir	Close the directory stream.
FS_readdir	Read a directory.
FS_remove	Remove file by the path.
FS_length	Return length of a file.
FS_fopen	Open a file.
FS_fread	Read data from a stream.
FS_fwrite	Write data to a stream.
FS_fflush	Flush a stream.
FS_fclose	Close a file stream.
FS_fseek	Move the file pointer to a specified position.
FS_ftell	Get the current position of a file pointer.
FS_feof	Test for end-of-file on a stream.
FS_rewind	Repositions the file pointer to the beginning of a file.
FS_truncate	Change the size of file to length.
FS_rename	Rename file or directory.
FS_findFirst	Find files or subdirectories by wildcard in a directory.
FS_findNext	Continue a file search from a previous call to the FS_findFirst() function.
FS_setDateTime	Set a file or directory date and time.
FS_getDateTime	Get a file or directory date and time.
FS_setAttributes	Set a file or directory attributes.
FS_getAttributes	Get a file or directory attributes.

Driver and Port Interface

FATDriver_init

FS_STATUS FATDriver_init(

FATDriver_DEVICE

device

)

Initialize physical storage device driver for FAT file system.

Parameters

device

Device pointer to FSDriver_DEVICE structure.

Returns

FS_SUCCESS for success, else an error code is returned.

FATDriver_deinit

FS_STATUS FATDriver_deinit(

void

)

Deinitialize physical storage device driver for FAT file system.

Returns

FS_SUCCESS for success, else an error code is returned.

FATDriver_getStatus

FS_STATUS FATDriver_getStatus(

void

)

Retrieve the removable media card’s current status for FAT file system.

Returns

FS_SUCCESS for success, else an error code is returned.

FATDriver_writeSectors

FS_STATUS FATDriver_writeSectors(		void	*	buffer,
	unsigned	long		sector,
	unsigned	long		count	)

Write sectors to the storage device.

Parameters

buffer	Data buffer to be written to the stroage device.
sector	Start sector address for written data.
count	Maximum number of sectors to be written.

Returns

FS_SUCCESS for success, else an error code is returned.

FATDriver_readSectors

FS_STATUS FATDriver_readSectors(		void	*	buffer,
	unsigned	long		sector,
	unsigned	long		count	)

Read sectors from the storage device.

Parameters

buffer	Data buffer read from storage device.
sector	Start sector address for read data.
count	Maximum number of sectors to be read.

Returns

FS_SUCCESS for success, else an error code is returned.

FATPort_getDateTime

void FATPort_getDateTime(

FS_DATE_TIME

date_time

)

Get the current date and time information from target system.

Parameters

date_time

Store the current date and time information.

Licensing and Pricing

Zeeis Embedded FAT File System is a low-cost and royalty-free software IP designed to enable developers design their own final products quickly and easily, so there are no restrictions or limitations on the use or modification for your products.

Please contact Zeeis via email sales@zeeis.com for further information.