[Libre-soc-bugs] [Bug 517] Define JTAG pins and set up with litex for ulx3s85f

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Mon Apr 5 14:13:34 BST 2021


--- Comment #85 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Cole Poirier from comment #81)

> It's far more complicated than simply selecting the interface i.e.

no, it really is not.

> 'stlink-v2', especially when the board and target aren't already supported
> by openocd.

you have jumped far too far ahead, by reading too much documentation that is
not in the least bit relevant, instead of asking.

you should have said, here on this bugreport, "today i am reading document X,
looking for Y".

i could have then guided you rather than you wasting hundreds of hours of
precious time.

>     Maybe you don’t know yet what your board looks like to JTAG. Once you
> know the interface.cfg file to use, you may need help from OpenOCD to
> discover what’s on the board. Once you find the JTAG TAPs, you can just

that is ALL that was needed.  NOTHING ELSE.

what we are doing is so basic and so low level (at the JTAG level ONLY) that
everything else is COMPLETELY IRRELEVANT.

the task is, was, shall be and remains to be to simply get the stlinkv2 to
recognise  the JTAG Interface by sending an IDCODE and executing .swf files
once that is successful.

that is what is in the README and that is all that is, was, and shall be

if you had asked for clarification it would have been possible to reinforce
that and clarify it *weeks* agob

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