v1 STM32 bxCAN driver.

[TomDeRybel]

Hello Pavel,

As discussed, here is the pull request for the bxCAN driver.

Best regards,
Tom

[pavel-kirienko]

I took the liberty to push to your fork directly moving the driver into a subdirectory bxcan (because we're expecting an FDCAN driver eventually to arrive) and updating the README a little. I did not touch the code, as you can see in the commit history.

After this is merged, I am planning to add a basic CI pipeline that would run the clang tools.

[TomDeRybel]

Hello Pavel,

I've made the changes. Please have a go at the comments, there are one or two things there.
This is my first time using GitHub and git, so I hope I didn't mess it up.

[TomDeRybel]

Hello Pavel,
Once more, here are all the changes as I understand them.

It continues to amaze me how something so broken (previous versions) manages to work well enough that none of the problems showed-up yet. Probable due to the very light bus load and low transmission interval I'm running at at this time (just the heartbeat messages of two or three devices on an otherwise clean and short bus).

[pavel-kirienko]

Can you please run clang-format once more? There are some minor formatting issues.

[pavel-kirienko]

Aside from one remaining issue with the timeouts, the driver looks okay, but as you said correctly there is too much logic to validate by just looking at it. Would you be interested in collaborating on #13 after this PR is merged? The plan is that we would set up test hardware connected to some computer and make it run various tests automatically on the hardware. It's no rocket science but takes some dedication to arrange the many needed pieces correctly.

[TomDeRybel]

Regarding #13, I've given it some thought over the weekend. Where I may be willing to contribute is in (custom) test hardware for the project (Such as AVR, STM32, etc... (FD)CAN-enabled boards with the required diagnostics connections, a bus disturbance generation device, etc...) However, explicitly not in writing code. In any case, I'm willing to discuss a role in this.