44848287486669EE239v01| Application Note

44848287486669EE239v01| Application Note

Engineer-to-Engineer Note

EE-239

a
Contributed by Steve K

Technical notes on using Analog Devices DSPs, processors and development tools
Contact our technical support at dsp.support@analog.com and at dsptools.support@analog.com Or visit our on-line resources http://www.analog.com/ee-notes and http://www.analog.com/processors

Running Programs from Flash on ADSP-BF533 Blackfin Processors
Rev 1 May 22, 2004

Introduction
This document describes the process of setting up an application to run on the ADSP-BF533 Blackfin processor via flash memory, instead of being loaded from VisualDSP++ 3.5 via an emulator. It uses the ADSP-BF533 EZ-KIT LiteTM evaluation system as an example board. Minimum requirements: VisualDSP++ 3.5 (base release or Update) ADSP-BF533 Blackfin processor, silicon revision 0.2 or higher

The EZ-KIT Lite example program "Blink" is used to demonstrate the procedures. It can be found in the ..\Blackfin\EZ-Kits\ADSP-BF533\Examples\Blink\C directory within the VisualDSP++ installation. The document considers two approaches: Running the program via the ADSP-BF533 Blackfin processor boot ROM Running the program directly from flash memory, via bypass mode

Initial Steps: Running Under the Emulator
Begin by coping the Blink example from the VisualDSP++ installation to a new working directory, and build it to verify that it works, as follows: 1. Copy the ..\Blackfin\EZ-Kits\ADSP-BF533\Examples\Blink\C directory to a new location. 2. Start VisualDSP++. 3. Use Project->Open to open BF533 4. Rebuild all. 5. Load the program into the ADSP-BF533 EZ-KIT Lite board (via an in-circuit emulator or USB agent) and run it. 6. Observe the six LEDs, blinking on and off in sequence. This program is running entirely from internal L1 memory, using L1 Instruction memory and L1 Data A and L1 Data B memory. No caches are enabled. SDRAM is not used. In the ISRs.c file, Timer0_ISR()uses the code shown in Listing 1 to generate the blinking sequence.
Copyright 2004, Analog Devices, Inc. All rights reserved. Analog Devices assumes no responsibility for customer product design or the use or application of customers' products or for any infringements of patents or rights of others which may result from Analog Devices assistance. All trademarks and logos are property of their respective holders. Information furnished by Analog Devices applications and development tools engineers is believed to be accurate and reliable, however no responsibility is assumed by Analog Devices regarding technical accuracy and topicality of the content provided in Analog Devices' Engineer-to-Engineer Notes.

Flags C.dpj

in the new location.