Hi Igor and Laurent,
Thanks for responding. I realised too late that -develop isn't the proper
list for this sort of questions.
On Thu, Nov 04, 2010 at 02:12:55PM +0100, Igor Skochinsky wrote:
> You don't have to rely on TRST, you should be able to reset the TAP by
> sending five clocks with TM
Hi,
I'm reverse engineering a SIP phone so I can reposess it and develop open source
firmware for it. I think I found why JTAG was failing.
It appears that my TRST is wired to GND through 12 Ohm resistor. As a result,
I cannot reset the chip into JTAG mode -- it needs Vtref on TRST to function,
Hi,
> Over the past weeks, I've been working on and off to get BSDL-based flash
> access
> incorporated in OpenOCD. In its current state it isn't worth publishing, but
> some of you might be interested in trying it anyway. So I setup a branch, as
> 0yvind suggested to me. It is located at:
>
ntegration with the rest of OpenOCD is workable, but the code
that actually runs the boundary scans is *very* much work in progress, to a
level that I haven't gotten it to work yet.
Having warned you, please feel free to experiment! Feedback and patches are
kindly welcomed, of course :)
Best,
Hi Laurant,
> Great job.
Far from done though. I mainly get zeroes at the moment,
because my chip continues to run. I'm still looking for the
right incantation to make it stop.
> This is true for some specific processors. But wrong for CPLD , FPGA,
> , and some ARM having methods to selec
Hey 0yvind,
You were right in advising me to use git:HEAD.
> I've rebased your patch onto origin/master, attached. The second patch
> are some changes that I made quickly, you'll have to review those changes
> carefully.
Thanks a lot! I added the GPL banner and will check the coding style guide
s and see how other react (possibly interactive with poking at
the hardware)
+ * (2) generic access to external flash chips by only altering a chip's pins
+ *
+ * This code is shared by OpenFortress Digital signatures, under the same
licensing rules
+ * as the rest of OpenOCD. htt
arly, I am missing something about how the
JTAG functions are to be used. What operations would you
advise?
Thanks,
Rick van Rein
OpenFortress
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