Bus state stays CLOSED, no Messages but no Errors also

[Tobias A.]

Hello,

I use:
Debian 12
Peak Linux Driver 8.17.0
PCAN-M.2 Card 3.5.7

I have two PC test setups with the described versions, on one PC all is ok and I can use the cards as expected. (OK_Example_1.PNG)
On the other when I want to tx / rx I get no frames but also no error / the driver seams to work (notOK_Example_1.PNG) the bus stays in CLOSED never the less

When I switch the Cards the behavior stays at the notOK PC so I suspect the error in some setting or option I´m not aware of.

Thanks a lot for any hints in advance!
BR
Tobias

[M.Heidemann]

Hello,

This sounds like an IRQ-related behavior, please see the following post:

viewtopic.php?f=218&t=7193

Best Regards

Marvin

[Tobias A.]

Hello,

your linked post starts out with NETDEV interface,
I forgot to mention I use the Chardev interface, so I want to point out the solution also worked out in that case!
thanks a lot for the quick reply!!!
RB Tobias


here again the solution:

please edit /etc/modprobe.d/pcan.conf and add the red line, to enable MSI support:

# pcan - automatic made entry, begin --------
# if required add options and remove comment
# options pcan type=isa,sp
options pcan fdusemsi=1
install pcan modprobe --ignore-install pcan
# pcan - automatic made entry, end ----------

Reboot your system once to load the driver with that new option.

check that cat /proc/pcan will show differnt IRQs for the card channels and make your test again.

[M.Heidemann]

Hello Tobias,

Thank you for letting us know!

Best Regards

Marvin

- Closed -