PEAK-System Forum

Hi all, I'm developing an application in Java that communicates with CAN using a Java JNI porting of the Socket Can library. (https://github.com/entropia/libsocket-can-java)
I am using Ubuntu 19.10, and I have installed the peak linux drivers with
and the build seems successful, and the driver initialized. I can see /dev/pcanusb32 and /dev/pcan-sb/0/can0 which points to /dev/pcanusb32.
If I open pcanview, I am able to connect to the interface, and correctly send and receive messages.

However, it is not listed in ifconfig.
When I try to retrieve the interface id by its name (pcanusb32) in my application, I get an error resulting from a ioctl call, saying "No such device".

I am not sure what I am doing wrong, any help is appreciated! I already search in this forum and tried many solutions, such as building a charnet or trying different arguments for the build, but they didn't work.

Alessandro

Hello Alessandro,

Please send us the output of:



$ cat /proc/pcan



Best Regards

Marvin

Thank for the reply, here it is

Hello Alessandro,

This would indicate you have the CharDev driver installed, not the NetDev-version.

The mainline-driver for use with socket can is already included in the kernel! You do not need to install it seperately.

To use SocketCan, do the following:

Change into your driver installation directory, from there execute:
Afterwards reboot to reload the mainline kernel driver.

Now you can check your device by calling:
and bring your device up like:

Best Regards

Marvin

Nice! It works... I was not aware of ip link. The only thing is that now pcanview can't find any device

Hi,

PCANView, like any appplication written in PCANBasic uses the CharDev-driver.

SocketCAN uses the NetDev-Driver (or Mainline driver, which is included in the kernel).

You have to choose the right driver for your usage.


Best Regards

Ok, thank you for clearing that out.

Hello Alessandro,

You`re welcome!

closed!