docs/3-Installation-J1939.md

   1 # Installation j1939 for AGL
   2
   3 #### Minimum kernel version : 4.19
   4
   5 ## Compilation of kernel j1939
   6
   7 ##### Clone linux-can-next repository on kernel.org
   8
   9 ```bash
  10 git clone https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git/
  11 ```
  12
  13 ##### Checkout on j1939 branch
  14
  15 ```bash
  16 git checkout j1939
  17 ```
  18
  19 ##### Add the compilation of the j1939
  20
  21 ```bash
  22 make menuconfig
  23         - Networking Support
  24                 - Can bus subsystem support
  25                         - <M> SAE J1939
  26                         - [*]   debug SAE J1939
  27 ```
  28
  29 ##### Compile
  30
  31 ```bash
  32 make
  33 ```
  34
  35 ##### Install
  36
  37 ```bash
  38 make modules_install
  39 make install
  40 ```
  41
  42 ##### Update grub
  43
  44 ###### CentOS/RHEL/Oracle/Scientific and Fedora Linux
  45
  46 ```bash
  47 grub2-mkconfig -o /boot/grub2/grub.cfg
  48 grubby --set-default /boot/vmlinuz-...
  49 reboot
  50 ```
  51
  52 ###### Debian/Ubuntu Linux
  53
  54 ```bash
  55 update-grub
  56 reboot
  57 ```
  58
  59 ##### Check if the installation is correct
  60
  61 ```bash
  62 modprobe can-j1939
  63 ```
  64
  65 If no errors are generated you have successfully install a kernel with j1939 module.
  66
  67 You can have a problem with header file, to check that go in the file /usr/include/linux/can.h
  68
  69 ```bash
  70 vi /usr/include/linux/can.h
  71 ```
  72
  73 If in the struct sockaddr_can you don't see j1939, the header are not upgrade.
  74
  75 So you need to do this manually, go to you're linux-can-next repository and do the following command:
  76
  77 ```bash
  78 cp include/uapi/linux/can.h /usr/include/linux/can.h
  79 cp include/uapi/linux/can/j1939.h /usr/include/linux/can/
  80 ```
  81
  82
  83
  84 ### Activate J1939 CMAKE
  85
  86 To activate J1939 at the compilation.
  87
  88 Edit the file conf.d/cmake/cmake/config.cmake
  89
  90 And change the line :
  91
  92 ```cmake
  93 option(WITH_FEATURE_J1939 "Activate J1939" OFF)
  94 ```
  95
  96 With :
  97
  98 ```cmake
  99 option(WITH_FEATURE_J1939 "Activate J1939" ON)
 100 ```
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