unofficial-rtos-docs

Overview of FileX

FileX embedded file system is Eclipse ThreadX’s advanced, industrial grade solution for Eclipse Foundation FAT file formats, designed specifically for deeply embedded, real-time, and IoT applications. FileX supports all of Eclipse Foundation’s file formats, including FAT12, FAT16, and FAT32. FileX also offers optional fault tolerance and FLASH wear leveling via an add-on product called LevelX. All of this combined with a small footprint, fast execution, and superior ease-of-use, make FileX the ideal choice for the most demanding embedded IoT applications.

API protocols

Media Services

• FAT 12/16/32 support
• Minimal 6KB FLASH, 2.5KB RAM
• Complete media access services
• Unlimited number of media instance
• Simple read/write logical sector driver interface
• Multiple partition support
• Logical sector cache
• FAT entry cache
• Optional fault tolerance support
• Deferred Secondary FAT update
• System-level Trace via TraceX
• Intuitive media access APIs, including:
  • fx_media_open
  • fx_media_close
  • fx_media_format
  • fx_media_space_available

Directory Services

• Up to 256 byte paths
• Long and 8.3 directory names supported
• Directory create & delete
• Directory navigation and traversal
• Directory attributes management
• System-level Trace via TraceX
• Intuitive directory access APIs, including:
  • fx_directory_create
  • fx_directory_delete
  • fx_directory_attributes_set
  • fx_directory_attributes_read
  • fx_directory_first_entry_find
  • fx_directory_next_entry_find

File Services

• Minimal 3.3KB FLASH
• Unlimited open files
• Read-only files can be opened multiple times
• Long and 8.3 directory names supported
• Contiguous file support
• Fast seek logic
• Pre-allocation of clusters
• File create, delete, and rename
• File read, write, and see
• File attributes management
• System-level Trace via TraceX
• Intuitive file access APIs, including:
  • fx_file_create
  • fx_file_delete
  • fx_file_attributes_set
  • fx_file_attributes_read
  • fx_file_read
  • fx_file_seek
  • fx_file_write

Advanced technology

FileX is advanced technology, including the following.

• FAT 12/16/32 support
• Multiple partition support
• Automatic scaling
• Endian neutral
• Long file name and 8.3 support
• Optional fault tolerance support
• Logical sector cache
• FAT entry cache
• Pre-allocation of clusters
• Contiguous file support
• Optional performance metrics
• TraceX system analysis support

NOR/NAND Wear Leveling (LevelX)

LevelX is Eclipse Foundation’s NOR/NAND FLASH wear leveling product. LevelX can be used in conjunction with FileX or as a stand-alone, direct read/write FLASH sector library for the application.

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