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| tcal | For fomu, does anyone know of any examples of a simple C program communicating over the usb/tty (say via getchar/putchar)? The C blinky example in the workshop has some USB code compiled in but doesn't seem to do IO. The precompiled micropython (fupy) does do IO over the USB (using tinyUSB?) -- should I find the source for that and start there? Also, I saw the Messible stuff, but that also raises a lot of questions... | 19:48 |
|---|---|---|
| CarlFK | tcal: I don't hack the code, so don't put much weight in what I say about this, but before I looked at MP I would look at https://github.com/timvideos/HDMI2USB-litex-firmware | 20:40 |
| tpb | Title: GitHub - timvideos/HDMI2USB-litex-firmware: A version of the HDMI2USB firmware based around LiteX tools produced by @Enjoy-Digital (based on misoc+migen created by @M-Labs) (at github.com) | 20:40 |
| CarlFK | I suspect the MP code has more layers of abstractions, which in this case might make your quest harder | 20:41 |
| CarlFK | the hdmi2usb is likely pretty simplistic | 20:41 |
| mithro | tcal: xobs can probably answer that | 20:59 |
| tcal | CarlFK: thanks! I did start digging in the fupy fork of micropython, and saw the get-gateware.sh script needed by the build, which pointed to timvideos/HDMI2USB-firmware-prebuilt, and I didn't see anything Fomu there. I'll start digging in the HDMI2USB source, unless I get other leads... | 21:06 |
| mithro | IIRC -- HDMI2USB doesn't support Fomu yet | 21:07 |
| mithro | IIRC Antmicro was working on that | 21:07 |
| mithro | https://github.com/timvideos/litex-buildenv/pull/244 | 21:08 |
| tpb | Title: Add Fomu support by piotr-binkowski · Pull Request #244 · timvideos/litex-buildenv · GitHub (at github.com) | 21:09 |
| CarlFK | fomu and hdmi2usb use a different usb ... um.. ip, core, thing | 21:09 |
| mithro | tcal: Now I recall the wishbone-tool and uart bridge can be used together... | 21:36 |
| mithro | tcal: https://wishbone-utils.readthedocs.io/en/latest/wishbone-tool/#serial-bridge | 21:37 |
| tpb | Title: wishbone-tool - All-in-one Wishbone Binary and Library wishbone utils 0.7.7-1-gfc2d1a0 documentation (at wishbone-utils.readthedocs.io) | 21:37 |
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