PEAK-System Forum

Good morning,
I'm using the PEAK Usb adapter which works well.

*------------- PEAK-System CAN interfaces (www.peak-system.com) -------------
*------------- Release_20150729_n (7.15.2) Nov  2 2015 15:32:59 --------------
*---------- [mod] [isa] [pci] [pec] [dng] [par] [usb] [pcc] [net] -----------
*--------------------- 1 interfaces @ major 249 found -----------------------
*n -type- -ndev- --base-- irq --btr- --read-- --write- --irqs-- -errors- status
32    usb   can0 ffffffff 000 0x001c 0000433c 00005285 0001bcf9 00002b33 0x0000

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ls -l /dev/pcan*
lrw-rw-rw- 1 root root       8 Apr 20 09:20 /dev/pcan32 -> pcanusb0
crw-rw-rw- 1 root root 180, 32 Apr 20 09:20 /dev/pcanusb0

/dev/pcanusb:
total 0
lrw-rw-rw-1 root root 11 Apr 20 09:20 devid=0 -> ../pcanusb0

when I run my application with sudo everything runs great. But now I wanted to run the application without root. Then i get ofcourse this errors :

RTNETLINK answers: Operation not permitted
RTNETLINK answers: Operation not permitted
RTNETLINK answers: Operation not permitted

My Question is what i have to set on Linux that I'm allow to run the application without sudo ?

Hi,

what do you do in your application? Do you have the same problem when using the socketCAN tools?

regards

Michael

Hi,

I got the problem

The lib I have used try to set the bitrate and start/stop the socket witch is not supported for peak with socketcan or?

regards Heiko

Hi,

yes, this ip link set feature is only available in the newer 8.x driver version

best regards

Michael

BTW: when you use socketCAN, and a kernel >3.4, there is no need to install our peak-linuxdriver. The kernel already includes the Netdev driver for our hardware.

Hi,

Sorry to hijack this thread.

I used mPCIe Peak Card on my system running with Ubuntu 16 and then installed version 8.x driver. I was able to received CAN messages using candump userspace application.

Now, I tried my application using socketcan and the way it works similar to Heiko's application (start/stop the socket), but for some reason I also encountered similar issue.

There is no respond the last thread if that answer solves the issue.

Best Regards,
Ian

Hi,

do you use the kernel drivers for SocketCAN or did you install the peak-linux-driver? Please send us the output of cat /proc/pcan if the peak-linux-driver is used.

regards

Michael

Hi Michael,

I installed libsocketcan (apt install libsocketcan-dev) before issuing modprobe pcan. Here is the output of cat /proc/pcan

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*------------- PEAK-System CAN interfaces (http://www.peak-system.com) -------------
*------------- Release_20171027_n (8.5.1) Apr 11 2018 14:53:01 --------------
*---------- [mod] [isa] [pci] [pec] [dng] [par] [usb] [pcc] [net] -----------
*--------------------- 2 interfaces @ major 242 found -----------------------
*n -type- -ndev- --base-- irq --btr- --read-- --write- --irqs-- -errors- status
 0    pci   can0 90700000 016 0x001c 00000000 00000000 00000000 00000000 0x0000
 1    pci   can1 90700400 016 0x001c 00000000 00000000 00000000 00000000 0x0000

Regards,
Ian

Hi,

Setting bitrate generally needs root privileges. Can you tell us the version (or the download source) of the libsocketcan you use, please?

Regards,

Stéphane

Hi,

This is the information as shown when running locate libsocketcan

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 libsocketcan.so.2.2.1

Thanks.

Hi,

As I said, while running a Linux System, setting up/down a network interface (as well as setting the bitrate of a can interface) needs root privileges.

Regards,

Stéphane

PEAK-System Forum

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