Peak chardev driver on Linux stops reading abruptly

[eoztosun]

Hi,

I have an application based on PCAN-Basic API. The application runs without any problems on Windows 10 and Windows 11. I'm trying to port it to debian Linux.

I installed the chardev peak driver, following the instructions in the README within the package. When I try to run RX examples, they stop after a while. My Application's RX also stops after a while.

Code: Select all

ls /dev | grep pcan

gives

• pcan32
  pcan-usb
  pcanusb32

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sudo dmesg

gives

PCAN-USB CAN1: controller internal Rx queue overflow: possible loss of msgs(s)


I'm receiving a single message with 10ms period from a single node. How come RX queue can be full. Documentation suggests that the default RX buffer is 2000 and it can be configured. I configured it to 30000 to see if it solves but didn't work.

[M.Maidhof]

Hi,

please post the output of cat /proc/pcan before and after the reading stops. Can you please show a photo of the used PCAN hardware, to see which version you are using?

regards

Michael

[eoztosun]

Here is the PCAN-View description of the device at hand

PCAN-USB_at_hand.png (70.67 KiB) Viewed 20833 times

Here is

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cat /proc/pcan

output before any read operation, after powering the Debian/Linux (intel x86) computer with aforementioned PCAN-USB attached.

before.png (44.66 KiB) Viewed 20833 times

Here is

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cat /proc/pcan

output after read operation.

after.png (45.55 KiB) Viewed 20833 times

Here is the

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sudo dmesg

output after the reading stops.

dmesg_output.png (17.33 KiB) Viewed 20833 times

I tried on a virtual machine on my Windows computer, same result. Examples on peak driver and PCAN-Basic driver and my own application, they all have the same issue. Reading stops after a while. When I re-run, it reads a while and then stops again.

[M.Maidhof]

Hi,

please send a photo of the adapter showing the serial number to our support email address, to see which hardware you are using.

regards

Michael

[eoztosun]

The problem seems to be solved but I have no idea how. I am not able to reproduce it. And I don't think I have made any configuration changes.

Thank you for your support

Edit: Please keep the post for a while in case if it occurs again