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| xobs | ...I've been busy with Fomu lately so I haven't had a chance to get set up, but if anyone has an ECP5 handy that'd be really useful to know if it's working! | 02:03 |
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| John_K | I just got an ULX3S, should be able to give it a shot | 02:03 |
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| xobs | John_K: thanks! Let me know how it goes. Everything should be statically built for linux and windows. Just set your PATH and go. | 02:09 |
| xobs | ...whoops. Forgot to push the branch that filed nameplates. Fixed, so now it doesn't say "Fomu" anymore. | 02:10 |
| John_K | so I just run build.sh? documents are unclear | 02:23 |
| John_K | or is this repo just telling me to download a prebuilt toolchain? | 02:24 |
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| John_K | trying to build spispy with it and ecppll is missing from ProjectTrellis | 02:41 |
| John_K | @xobs: looks like you need to include some things from ProjectTrellis and it would be nice if there was a script to download the prebuilt for you (it seems you have most of the needed logic in build.sh anyway) | 02:43 |
| xobs | John_K: It's missing? I thought I included it... Thanks for the report. | 02:44 |
| John_K | at least not in the 1.4 version | 02:44 |
| xobs | Are any of the other ecp tools installed? I might've just gotten the paths wrong. | 02:46 |
| John_K | find returns no binaries starting with "ecp" | 02:48 |
| xobs | John_K: I'm sorry, I think the page wasn't updated yet, so maybe you downloaded the fomu toolchain that's ice40-only. Did you get it from https://github.com/xobs/ecp5-toolchain/releases? | 02:49 |
| tpb | Title: Releases · xobs/ecp5-toolchain · GitHub (at github.com) | 02:49 |
| xobs | The latest version is 1.3. | 02:49 |
| John_K | ah, no | 02:49 |
| John_K | the readme linked to ice40 | 02:49 |
| John_K | I see you've updated it | 02:50 |
| xobs | Yeah, git is weird. Especially when it comes to tags and branches. I messed up and only pushed the tag, not the branch. | 02:51 |
| John_K | ahh yep, been bitten by that before | 02:51 |
| John_K | xobs: ERROR: Unable to read chipdb /usr/share/nextpnr/ecp5/chipdb-25k.bin | 02:54 |
| John_K | checking to make sure this isn't something weird with spispy build system | 02:54 |
| John_K | looks like an error in nextpnr-ecp5 in your toolchain | 02:55 |
| John_K | chipdb-25k.bin doesn't appear to exist either | 02:57 |
| xobs | John_K: Okay, that's definitely an error. Apparently when you use an external chipdb, it doesn't include it in the binary. | 03:01 |
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| xobs | _florent_: I redid it so now it's subclassed from csrstatus and csrstorage. | 08:54 |
| xobs | https://github.com/xobs/dreg/blob/master/dcsr.py | 08:54 |
| tpb | Title: dreg/dcsr.py at master · xobs/dreg · GitHub (at github.com) | 08:54 |
| xobs | And here's a working example that uses it for all accesses: https://github.com/xobs/valentyusb/blob/8731739397e13d41a94b6dba428be9f854a28072/valentyusb/usbcore/cpu/eptri.py#L699 | 08:55 |
| tpb | Title: valentyusb/eptri.py at 8731739397e13d41a94b6dba428be9f854a28072 · xobs/valentyusb · GitHub (at github.com) | 08:55 |
| keesj | https://theamphour.com/456-3-discussing-fomu-with-tim-ansell-and-sean-cross/ had some talk on the whole ecosystem (including litex) | 09:34 |
| keesj | I know some stuff was discussed here (usb->withbone) but it was also nice to hear the "use case" typeish idea | 09:35 |
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| _florent_ | xobs: that seems fine, i'll have a closer look later, just regarding the API: | 14:20 |
| _florent_ | Field should probably be renamed to DCSRField (to avoid ambiguity when others Field objects are used) | 14:21 |
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| _florent_ | also to access field, could it be: status.have instead of status.w.have and ctrl.advance instead of ctrl.r.advance? | 14:22 |
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| xobs | _florent_: I'm about to go to bed right now, sorry. But I wanted a short name for Fields since they get used often. | 15:55 |
| xobs | Also, to access a field depends on whether you're writing it or reading it. CSRStorage objects that have writr_from_dev support both reading and writing, so that syntax wouldn't work. | 15:56 |
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| xobs | Maybe we could prefix them with w_ and r_ if they're readable and writable? | 15:57 |
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| _florent_ | xobs: maybe only CSRStorage with write_from_dev should have a .w: status.have (written by the logic, read by the CPU), ctrl.advance ( written by the CPU, read by the logic) ctrl.advance.w (for write_from_dev) | 17:29 |
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