[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
Thu Oct 22 23:55:43 BST 2020


https://bugs.libre-soc.org/show_bug.cgi?id=517

--- Comment #4 from Cole Poirier <colepoirier at gmail.com> ---
Hi Luke,

I read through your instructions and looked and the files that are needed and I
think I understand how this will be done. However, I'm getting stuck currently
on not being able to find a simple pinout diagram on the ulx3s85f. There are
schematics for it which I can't quite make sense of, and there's the exact
diagram I'm looking for... but it's for the esp32 module not the ulx3s pcb :(

https://github.com/emard/ulx3s/blob/master/doc/ESP32_Pinout_a1_3.png

Would this info be in the constraints file?

https://github.com/emard/ulx3s/blob/master/doc/constraints/ulx3s_v20.lpf

And/or the schematic diagrams?

https://github.com/emard/ulx3s/blob/master/doc/schematics_v308.pdf

There is a pinout csv file but it has about 1000 entries and looks like it's
out of date as it's from 2015. I'm entirely out of my depth here.

https://github.com/emard/ulx3s/blob/master/doc/ECP5U85Pinout.csv


Sorry, I need some significant help here as this is currently melting my brain.

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