ARM Technical Support Knowledge Articles

SWD COMMUNICATION FAILURE ON STELLARIS BOARD

Applies to: ULINK USB-JTAG Debugger

Answer


Information in this knowledgebase article applies to:


QUESTION

When I try to connect to the TI/Stellaris LM3S6965 board using ULINK2 (Project — Options for Target, Debug tab, Settings), I get the following error:

SWD Communication Failure

I can connect to the board using the Stellaris ICDI driver. What could be wrong with ULINK2?

ANSWER

Nothing is wrong with ULINK2. Some Stellaris boards do not provide VCC power to the 20-pin JTAG connector. To accommodate this board, remove the cover of your ULINK2 adapter and move the VCC jumper to the 3,3V position to power JTAG from the PC.

ULINK2 should now connect to the TI/Stellaris board.

MORE INFORMATION

ATTACHED FILES

Request the files attached to this knowledgebase article.

Article last edited on: 2011-03-02 09:58:29

Rate this article

[Bad]
|
|
[Good]
Disagree? Move your mouse over the bar and click

Did you find this article helpful? Yes No

How can we improve this article?

Link to this article
Copyright © 2011 ARM Limited. All rights reserved. External (Open), Non-Confidential