[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 01:03:09 BST 2020


--- Comment #8 from Cole Poirier <colepoirier at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #7)

> 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.

I don't fully understand. How do I know which physical pin on the fpga pcb to
plug the jumper into/onto? Which pin number 0 thorugh 27 corresponds to gpio_0?
Or does it actually correspond to B11?

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