Communication protocol

J1939 installation

Minimum kernel version : 4.19

Compilation of kernel j1939

Clone linux-can-next repository on kernel.org

git clone https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git/

Checkout on j1939 branch

git checkout j1939

Add the compilation of the j1939

make menuconfig
    - Networking Support
        - Can bus subsystem support
            - <M> SAE J1939
            - [*]   debug SAE J1939

Compile

make

Install

make modules_install
make install

Update grub

CentOS/RHEL/Oracle/Scientific and Fedora Linux

grub2-mkconfig -o /boot/grub2/grub.cfg
grubby --set-default /boot/vmlinuz-...
reboot

Debian/Ubuntu Linux

update-grub
reboot

Check if the installation is correct

modprobe can-j1939

If no errors are generated you have successfully installed a kernel with j1939 module.

You can have a problem with header file, to check that go in the file /usr/include/linux/can.h

vi /usr/include/linux/can.h

If in the struct sockaddr_can you don’t see j1939, the headers are not upgraded.

So you need to do this manually, go to your linux-can-next repository and do the following command:

cp include/uapi/linux/can.h /usr/include/linux/can.h
cp include/uapi/linux/can/j1939.h /usr/include/linux/can/

ISOTP installation

Compilation and installation of module kernel isotp

Clone repository Linux Kernel Module for ISO 15765-2:2016 CAN transport protocol

git clone https://github.com/hartkopp/can-isotp.git

Move into the new repository

cd can-isotp

Install packages to build

sudo apt-get install build-essential linux-headers-$(uname -r)

Compile

make

Install

sudo make modules_install

Load module

modprobe can
modprobe vcan
sudo insmod ./net/can/can-isotp.ko

Include headers files

sudo cp include/uapi/linux/can/isotp.h /usr/include/linux/can/