Version 4.09.02
Release Date
July 6, 2026
Changelog
Added Structured Debug Logging feature with five severity levels (ERR/WARN/INFO/DBG/TRACE), per-channel tags, compile-time zero-overhead filtering, and configurable output function. (511)
Added support for MT25QL512ABB8. (457)
Added support for MX25LM51245G. (467)
Improved the PHY Cmd interface layer for NOR. (471)
Configuration validation for FS_FAT_CFG_VOL_CHK_EN, FS_FAT_CFG_VOL_CHK_MAX_LEVELS, FS_CFG_WORKING_DIR_EN, FS_CFG_API_EN, FS_CFG_CONCURRENT_ENTRIES_ACCESS_EN, and FS_CFG_FILE_LOCK_EN. (510)
Fixed 'ARR-inv-index-pos' C-STAT warnings. (445)
Fixed the MT25Q/N25Q PHY drivers to use the Full QUAD (4-4-4) protocol instead of extended spi (1-1-4). (472)
Fixed Signed/Unsigned File Offset Mismatch. (509)
Fixed compiler warning when enabling FS_CFG_64_BITS_LBA_EN and setting FS_TRACE_LEVEL to TRACE_LEVEL_DBG. (533)
Version 4.09.01
Release Date
June 30, 2025
Changelog
Fixed warnings caused by expressions implicitly converted to a narrower type, resulting in an overflow or underflow of its value.
Fixed warnings caused by out of range shifts.
Fixed warnings caused by parameters and local variables used as a divisor without having been determined to be non-zero.
Fixed warnings caused by variables being read before being assigned a value.
Fixed warnings caused when variables are assigned non-trivial values that are never used.
Version 4.09.00
Release Date
December 23, 2022
Changelog
Added support for FreeRTOS.
Version 4.08.03
Release Date
June 24, 2022
Changelog
Added support for ISSI External Flash Device IS25LP128.
Version 4.08.02
Release Date
June 16, 2021
Changelog
Fixed kernel include paths in the OS port files.
Fixed Shell include paths in the Cmd files.
Version 4.08.01
Release Date
March 19, 2021
Changelog
Added QSPI support for Micron N25Q
Version 4.08.00
Release Date
August 11, 2020
Changelog
Initial release forked from uC/FS V4.08.00
