Sundance SMT387-FS - Manual (Page 5)

Introduction
This document describes the file system software package provided for use with the
Sundance SMT387 module. It includes descriptions of the functions available in the package
as well as details of the procedures to be used when setting up a new hard disk drive for use
with the SMT387.
Overview
The SMT387 File System Package allows an application running on the SMT387 to read and
write files in FAT32 file systems on attached SATA hard disk drives. Attaching the same hard
disk drive to a personal computer running Windows XP or Windows 2000 allows the same
FAT32 file system to be read and written by applications on that computer.
The library should only be used in a single user task. Use in multiple tasks will result in data
corruption. If you need to access a FAT32 file system from more than one user task, you
must use inter-task communication to forward requests from one task to another.
Within the task that is using the File System Package, multiple threads can all access files at
the same time, subject to available memory. The SMT387 File System Package
synchronizes access to the files, and manages all file system metadata such as File
Allocation Tables (FATs) and directory records. The package is compatible with the Diamond
stand-alone library for use in fully embedded applications.
Performance features included in the SMT387 File System Package include a data buffering
facility to decouple user threads from activity on the disk drive, and a preallocation facility
designed to reduce the time taken when files are extended.
Requirements
The following requirements must be met for a system to be able to use the SMT387
File System Package:
• SMT387 module with V2 DSP silicon.
• One or two attached SATA disk drives.
• Diamond version 2.5.2 or later.
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