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KevinOConnor / can2040

Software CAN bus implementation for rp2040 micro-controllers
GNU General Public License v3.0
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Documentation / Application Reference #25

Closed 6ffm70 closed 1 year ago

6ffm70 commented 1 year ago

can2040 looks like it could help me with a project that reads data from my motorcycle with an Arduino Nano Connect. Is there a description of a reference application with a single-board microcontroller somewhere?

Thanks

KevinOConnor commented 1 year ago

There is no description of a reference hardware. One can use Klipper as a reference software implementation: https://github.com/KevinOConnor/can2040/blob/master/docs/Tools.md

-Kevin

thestumbler commented 1 year ago

Could you remark which CAN transceiver chip you used in your experiments? Are there any reasons to prefer one particular transceiver over any others?

KevinOConnor commented 1 year ago

There is some info on test hardware I've used at https://github.com/KevinOConnor/can2040/blob/master/docs/Tools.md#testing-with-raspberry-pi-pico-board . I don't have a lot of experience with different canbus transceivers - as far as I know, as long as a transceiver supports 3.3V digital IO, it should work with can2040.

-Kevin

thestumbler commented 1 year ago

Thanks Kevin. Just one day after I posted this question, I dug around more in your repository and found the information you mention that I'd missed on my first search.

I'm gonna just try with a couple of AliExpress Can transceivers that I have on-hand from another project and see what happens. I have one of the RP2040 Pico - Can modules, but it has the transceiver and the Can interface chip. As convenient as it would be, I don't think I could use that board without butchering it irreversibly (I really want to test with your technique to avoid being dependent on a transceiver chip which may be hard to source). Plus I want to get some experience with the PIOs

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