[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
Fri Oct 23 00:50:51 BST 2020


--- Comment #7 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Cole Poirier from comment #6)

> Already did this. What I don't know how to do is estaplish the relationship
> between this      
> ("gpio", 0,
>     Subsignal("p", Pins("B11")),
>     Subsignal("n", Pins("C11")),
>     IOStandard("LVCMOS33")
> ),

ok so when you do platform.request_resource("gpio", 0) it returns a migen
Record containing (in this case) a Signal named "p" and a Signal named "n" each
of length "count-the-number-of-things-in-the-string-inside-Pins".

you can find this kind of thing out with "print dir(x)" inside the code. where
x = platform.request_resource(blah blah) or anything else for that matter.

the actual pin name is for *your* convenience when plugging in the jumper wire.

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