CAN Database | adafruit | Page 1

fervent goblet Apr 11, 2025, 4:30 AM

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Context: CircuitPython does not seem to have cantools.database stuff that one would typically use to load a CAN database file. It also does not have an xml parser if someone wanted to load the .kcd file directly.

fervent goblet Apr 11, 2025, 4:46 AM

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I currently generate a kcd file from a dbc file using canconvert. The dbc file is created using Kvaser Database Editor 3.

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If something like this already exists, I'm all ears as I'm constantly struggling to maintain my app's logic let alone tooling for the app to work.

visual patio Apr 11, 2025, 1:42 PM

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@fervent goblet There may be some confusion. In the CircuitPython context, CAN bus and canio refer to a networking protocol https://en.wikipedia.org/wiki/CAN_bus, not a database.

fervent goblet Apr 11, 2025, 3:36 PM

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Yep, I'm aware. This thread is about supporting CAN database files too

visual patio Apr 11, 2025, 7:54 PM

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my apologies, I was unaware of DBC relevance to CAN

fervent goblet Apr 11, 2025, 9:49 PM

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No worries. This channel I assume is for circuitpython itself vs this thread/topic is a more about creating a library for the community bundle kind of thing.

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Is there a better place for community bundle questions?

visual patio Apr 11, 2025, 10:20 PM

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@lethal fossil sorry to ping, but this is now buried in a thread and I think you may be able to answer about the community bundle (I think that's the right place for it, but I don't know the process)

lethal fossil Apr 11, 2025, 10:30 PM

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The community bundle expects the submodules to be circuitpython libraries that are ready to be loaded onto devices as they are checked in to the repo.

I don't have any experience with CAN and it's databases, but if I'm understanding this thread correctly it sounds like what @fervent goblet made is a tool that generates circuitpython compatible code that can then get put on a device rather than just directly code that goes on a device itself. Is that right?

If so I think maybe the community bundle is not the best spot for it.

I would say it could be a good candidate for a https://adafruit-playground.com/ page. If you're willing, you can create a repo on Github to hold the code and create a page on here with a bit of information about what is for and how to use it. and link / embed the code.

#CAN Database