adsp-21266skstz-2b Analog Devices, Inc., adsp-21266skstz-2b Datasheet - Page 10

• Manufacturer Part Number: adsp-21266skstz-2b
• Description: Sharc Embedded Processor
• Manufacturer: Analog Devices, Inc.

ADSP-21261/ADSP-21262/ADSP-21266
The VisualDSP++ debugger has a number of important fea­
tures. Data visualization is enhanced by a plotting package that
offers a significant level of flexibility. This graphical representa­
tion of user data enables the programmer to quickly determine
the performance of an algorithm. As algorithms grow in com­
plexity, this capability can have increasing significance on the
designer’s development schedule, increasing productivity. Sta­
tistical profiling enables the programmer to nonintrusively poll
the processor as it is running the program. This feature, unique
to VisualDSP++, enables the software developer to passively
gather important code execution metrics without interrupting
the real-time characteristics of the program. Essentially, the
developer can identify bottlenecks in software quickly and effi­
ciently. By using the profiler, the programmer can focus on
those areas in the program that impact performance and take
corrective action.
Debugging both C/C++ and assembly programs with the
VisualDSP++ debugger, programmers can
The VisualDSP++ IDDE lets programmers define and manage
DSP software development. Its dialog boxes and property pages
let programmers configure and manage all of the SHARC devel­
opment tools, including the color syntax highlighting in the
VisualDSP++ editor. This capability permits programmers to
The VisualDSP++ Kernel (VDK) incorporates scheduling and
resource management tailored specifically to address the mem­
ory and timing constraints of DSP programming. These
capabilities enable engineers to develop code more effectively,
eliminating the need to start from the very beginning when
developing new application code. The VDK features include
threads, critical and unscheduled regions, semaphores, events,
and device flags. The VDK also supports priority-based, pre­
emptive, cooperative, and time-sliced scheduling approaches. In
addition, the VDK was designed to be scalable. If the application
does not use a specific feature, the support code for that feature
is excluded from the target system.
Because the VDK is a library, a developer can decide whether to
use it or not. The VDK is integrated into the VisualDSP++
development environment, but can also be used via standard
command line tools. When the VDK is used, the development
environment assists the developer with many error-prone tasks
• View mixed C/C++ and assembly code (interleaved source
• Insert breakpoints
• Set conditional breakpoints on registers, memory,
• Perform linear or statistical profiling of program execution
• Fill, dump, and graphically plot the contents of memory
• Perform source level debugging
• Create custom debugger windows
• Control how the development tools process inputs and
• Maintain a one-to-one correspondence with the tools’
and object information)
and stacks
generate outputs
command line switches
Rev. E | Page 10 of 48 | July 2008
and assists in managing system resources, automating the gen­
eration of various VDK-based objects, and visualizing the
system state when debugging an application that uses the VDK.
VisualDSP++ Component Software Engineering (VCSE) is
Analog Devices’ technology for creating, using, and reusing
software components (independent modules of substantial
functionality) to quickly and reliably assemble software applica­
tions. It also is used for downloading components from the
Web, dropping them into the application, and publishing com­
ponent archives from within VisualDSP++. VCSE supports
component implementation in C/C++ or assembly language.
Use the expert linker to visually manipulate the placement of
code and data on the embedded system. View memory utiliza­
tion in a color-coded graphical form, easily move code and data
to different areas of the DSP or external memory with a drag of
the mouse, and examine run-time stack and heap usage. The
expert linker is fully compatible with existing linker definition
file (LDF), allowing the developer to move between the graphi­
cal and textual environments.
In addition to the software and hardware development tools
available from Analog Devices, third parties provide a wide
range of tools supporting the SHARC processor family. Hard­
ware tools include SHARC processor PC plug-in cards. Third
party software tools include DSP libraries, real-time operating
systems, and block diagram design tools.
EVALUATION KIT
Analog Devices offers a range of EZ-KIT Lite
forms to use as a cost-effective method to learn more about
developing or prototyping applications with Analog Devices
processors, platforms, and software tools. Each EZ-KIT Lite
includes an evaluation board along with an evaluation suite of
the VisualDSP++ development and debugging environment
with the C/C++ compiler, assembler, and linker. Also included
are sample application programs, power supply, and a USB
cable. All evaluation versions of the software tools are limited
for use only with the EZ-KIT Lite product.
The USB controller on the EZ-KIT Lite board connects the
board to the USB port of the user’s PC, enabling the
VisualDSP++ evaluation suite to emulate the on-board proces­
sor in-circuit. This permits the customer to download, execute,
and debug programs for the EZ-KIT Lite system. It also allows
in-circuit programming of the on-board flash device to store
user-specific boot code, enabling the board to run as a standal­
one unit, without being connected to the PC.
With a full version of VisualDSP++ installed (sold separately),
engineers can develop software for the EZ-KIT Lite or any cus­
tom-defined system. Connecting one of Analog Devices JTAG
emulators to the EZ-KIT Lite board enables high speed, nonin­
trusive emulation.
†
EZ-KIT Lite is a registered trademark of Analog Devices, Inc.
®†
evaluation plat­