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Tutorial on SWD

Note: This was originally posted on 10th March 2011 at http://forums.arm.com

Hi,

I'm planning to do some work on the implementation of SWD on a microcontroller to reprogram another ARM-based chip (an NXP LPC1114 or LPC1754 in this case). As I've found very little information, apart from a spec (which was not on the ARM web site when I came across it....), I wondered if there are any restrictions in the publication of such information. As I'm planning to publish some once I'm done, I want to make sure I won't get into trouble - I must admit that this is not my aim ;-)

If there is a public spec on the ARM web site that I could refer too, I would also be happy to get the link. Note: I'm focusing specifically on the Cortex-M3 at this stage. The doc I currently have at hand is called "ARM® Debug Interface v5 Architecture Specification".

Thanks in advance
Olivier