i.MX Processors中的主题 CAN doesn't work

CAN doesn't work

ivanskl — Wed, 18 Jul 2018 10:13:22 GMT

I have been using imx6q Saber Lite board with Ubuntu Xenial for i.MX6/7 boards August 2016 (kernel 4.1.15) image.
Something wrong with utility "candump".

For example, I am doing:

root@nitrogen:~# ip link set can0 up type can bitrate 125000
root@nitrogen:~# candump can0 &
root@nitrogen:~# cansend can0 5A1#11.22.33.44.55.66.77.88

But candump doesn't catch anything. The same from different terminals. And no error anywhere.
And cansniffer - catch nothing.

I've checked kernel and I think it's Ok: Netwoking support -> <*>CAN bus subsystem support -> CAN Device Drivers ->
<*>Support for Freescale FLEXCAN based chips.

At the same time "cat /proc/net/can/stats" shows transmitted (TXF) and received (RXF) frames.

How to make the utility candump show data?

Re: CAN doesn't work

igorpadykov — Wed, 18 Jul 2018 23:45:32 GMT

Hi Ivan

one can look at flexcan suggestions for that board given on:

Send and receive CAN frames on i.MX6 Sabre Lite Board?

or post on boundary devices forum Wiki - Boundary Devices

Best regards
igor
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Re: CAN doesn't work

ivanskl — Thu, 19 Jul 2018 08:35:19 GMT

I did not find any solution like to use another image. I got the newest one "Ubuntu Bionic 18.04 LTS for i.MX6/7 boards – June 2018 (kernel 4.9.x)", installed can-utils (for some reason, it was not installed there) and what do you think? The same result! Candump dosn't catch anything. :smileyhappy:)

What's wrong with CAN on that board? I need working CAN!

Re: CAN doesn't work

igorpadykov — Fri, 20 Jul 2018 01:35:55 GMT

this board is supported by its vendor: Boundary Devices, please post this on boundary devices forum Wiki - Boundary Devices

Best regards
igor