CANFD support

[UnaDirezione]

How can I configure the code so that I can use cc. py on a bus that only supports CANFD/CANFD acceleration

[kasperkarlsson]

Please refer to the configuration instructions for python-can:
https://python-can.readthedocs.io/en/stable/configuration.html

I suspect it might be as easy as adding an fd = true entry to your ~/.canrc file. If this is not enough you might want to look into setting the is_fd parameter to true in calls to underlying python-can functions (such as the wrapper in CanActions.send, see https://github.com/CaringCaribou/caringcaribou/blob/master/caringcaribou/utils/can_actions.py#L107)

If you get this working, please share your method here to help others who are in a similar situation 🙂

[sut4nd0]

when configuring "can.Bus()", add "fd=True". And, When constructing "can.Message", set "is_fd" to "True".

[Deejuha]

Hello,

Maybe digging an old topic, but current master carincaribou does not supports CAN-FD.
Solution, as my previous speaker is to modify can_actions.py -> send() method, where the CANMessage object is created and used with hard-coded FD, BRS settings. Also, noticed that some ECUs requires padding that is also configurable in there by modifying message-before-sending object.

Hope it helps :)

Maybe just as action/package it would be worth to read out can driver FD settings, or let it be configurable in interface? Who knows, throwing just an ideas.

[kasperkarlsson]

Thank you for sharing your solution @Deejuha!

If you feel like packaging this (e.g. enabling via an optional -fd argument) for Caring Caribou, a PR would be most welcome to bring your improvement to all users 🙂