Introduction

FreeRTOS+FAT SL is a market proven, DOS compatible, proprietary and supported FAT file system provided by HCC Embedded to Real Time Engineers Ltd for use with FreeRTOS or in bare metal¹ systems. FreeRTOS+FAT SL is intricately engineered to minimise both Flash and RAM footprint, allowing the same code base to be used across a wide range of 8, 16 and 32-bit MCUs. Other products in the file system family include both high performance and true fail-safe designs.

FreeRTOS+FAT SL is dual licensed, with free commercial licenses for some users.

Standard File System API
f_initvolume()	f_delvolume()	f_format()
f_getfreespace()	f_findfirst()	f_findnext()
f_getserial()	f_mkdir()	f_chdir()
f_rmdir()	f_getcwd()	f_open()
f_close()	f_flush()	f_write()
f_read()	f_seek()	f_tell()
f_rewind()	f_putc()	f_getc()
f_seteof()	f_truncate()	f_eof()
f_delete()	f_filelength()

Why FreeRTOS+FAT SL?

Tiny footprint, the same code can be used on the smallest to the largest MCU

Mature technology from HCC Embedded, the industry’s file system pioneers

Part of a family of files systems that include high performance and fail-safe FAT designs

Standard and comprehensive API

Proprietary and supported technology

Flash footprint as low as 4K bytes

RAM footprint <1K bytes

Small media driver abstraction layer for simple porting

FAT12, FAT16 and FAT32 support

¹ A bare metal system is defined to be a software platform that does not use a commercial or otherwise published task scheduler.