A Design Of Digital Storage Oscilloscope Document Management System

The document management system is an essential part of the embeddedDSO(Digital Storage Oscilloscope) software system. DSO is a digitizing oscilloscopeinstrument which is based on sampling technology and storage technology. The storefiles of DSO software system is very rich, however, the DSO embedded systems can’tmanage a variety of storage files with the means of the operating system. Avoiding eachkinds of store files confusion, it is necessary to design a document management systemfor the embedded DSO system. The issues in this context, is part of the DSO series ofprojects of the unit in collaboration with a company.This paper is a document management system design for DSO, which is used todesign and manage the embedded DSO storage system. On hardware, the DSO systembuild its hardware foundation with embedded digital processor ADSP-BF531as thecore and combination of peripheral SDRAM, Flash and USB interface; on software,ADI’s Visual DSP++5.0integrated development environment is used as softwareplatform for designing software system. The specific content including:Local storage management module: assign SDRAM storage resources inaccordance with the requirements of the software processing; design Flash read andwrite control functions; assign Flash storage resources on the basis of required by thesystem; design the Flash storage and recall function of the machine.External storage management module: design USB read and write functions on thebasis of the interface circuit; establish file system management of external memorybased on the FAT32file system; design external storage functions.Start and Update Manager module: control and manage DSO system files; designthe start program system for all system files; Design System Update upgrade package;design functions for updating DSO system security and reliable.In this thesis, the document management system design as a modular systemdepend on features. For easy to design, maintain and upgrade the software, each moduleis responsible for managing a function. After design is complete, it’s necessary to debugthe DSO system and optimize the software code of the document management system so that the document management system achieve the targets of managing all storagefiles and the maximum increase user convenience.