Appendix A: File System - Crestron CNX-DVP4 Operation Manual

Digital Video Processor

Appendix A: File System

76 • Digital Video Processor: CNX-DVP4
The file system inside the 2-series control engine can be broken down into two parts.
The first part resides on the on-board flash memory and the second resides on the
external compact flash/microdrive card. This appendix briefly describes the structure
of the file system.
The files that reside in the internal flash conform to a flat directory structure. The
compact flash system contains a fully FAT32 compatible file system to allow the
same compact flash card to be used in a Windows environment. The following table,
presents the structure of the overall file system.
File System
TOP SECONDARY
LEVEL LEVEL
\
DISPLAY
SYS
SETUP
HTML
SIMPL
SPLUS
USER
MAILBOX
CFØ
\CFØ\DISPLAY
Although the file system is case insensitive, the case is preserved to maintain file
checksums. The compact flash directory only appears when the compact flash is
inserted into the system. To reference files on the compact flash, prefix the "\CFØ\"
to any fully qualified path from the Windows environment. For example, if the file in
Windows is "\MyDirectory\MySubdirectory\MyFile.ext", the complete 2-series path
for a file on the first Compact Flash slot (onboard) is:
"\CFØ\MyDirectory\MySubdirectory\MyFile.ext"
You do not have to create subdirectories for general files; you can put them in the
root of the Compact flash (\CFØ).
The only time subdirectories are required is when putting bootable projects on the
Compact Flash (\CF0\SIMPL, \CF0\SPLUS), but SIMPL Windows takes care of that
for you when you do the File | Copy to CF function. SIMPL Windows makes the
appropriate subdirectories. The same is true when you put web pages on the
Compact Flash. The tools create the appropriate directories.
Crestron CNX-DVP4
DESCRIPTION
Root of the file system
Legacy/Unused
Contain various system configuration files
Directory used to hold setup files
Web pages
Control system program files
SIMPL+ module files\
User defined files
User mailbox file
The mounting point for the compact flash
files.
Directory used to hold display files
Operations Guide – DOC. 8170A