MikroE CAN SPI Click on PocketBeagle?

[Drew Fustini]

I'm curious if anyone has gotten the CAN SPI Click working with the
PocketBeagle?

I want to use the Macchina M2 with the PocketBeagle [0] and the
MCP2515 is wired to SPI0 [1]. I thought a Device Tree overlay for the
CAN SPI Click would be a helpful reference.

Note: I'm a bit confused by the product documentation for the 3.3V
version of the SPI CAN Click has the MCP2515. The product page [2]
lists SN65HVD230 but the manual PDF shows MCP2515.

It seems like the 5V version [3] is definitely a MCP2515, but I think
that may not work with the PocketBeagle?

Thanks!
Drew

[0] https://docs.macchina.cc/pb_adapter/
[1] https://github.com/macchina/m2-hardware/blob/master/M2/Interface%20Board%20Schematic.pdf
[2] https://www.mikroe.com/can-spi-33v-click
[3] https://www.mikroe.com/can-spi-5v-click

[Dennis Lee Bieber]

On Sun, 23 Dec 2018 10:13:34 -0600, Drew Fustini
<pdp7...@gmail.com> declaimed the following:

>I want to use the Macchina M2 with the PocketBeagle [0] and the
>MCP2515 is wired to SPI0 [1]. I thought a Device Tree overlay for the
>CAN SPI Click would be a helpful reference.
>

Why would you need a DTO for a board that uses SPI for communication?
Won't the regular SPI device tree entries work?

>
>It seems like the 5V version [3] is definitely a MCP2515, but I think
>that may not work with the PocketBeagle?
>

That may need level shifters; something like
https://www.adafruit.com/product/1875


--
Wulfraed Dennis Lee Bieber AF6VN
wlf...@ix.netcom.com HTTP://wlfraed.home.netcom.com/

[Drew Fustini]

On Sun, Dec 23, 2018 at 11:26 AM Dennis Lee Bieber
<wlf...@ix.netcom.com> wrote:
> Why would you need a DTO for a board that uses SPI for communication?
> Won't the regular SPI device tree entries work?

I am thinking that there will need to be device tree entries to
trigger the mcp251x to load and have the correct properties for the
MCP2515. Something like this dts that was created for the BeagleBone
Black:
https://github.com/battlesnake/beaglebone-spi0-mcp2515/blob/master/MCP2515.dts

> That may need level shifters; something like
> https://www.adafruit.com/product/1875

Thanks for the suggestion.

-Drew