CAN J1939 Setup

[mikehaller]

A user was asking me offline whether Eclipse Leda supports J1939 communication. I couldn't answer, as I am not familiar with the protocol stack.

It looks very similar to CAN itself, or may even be just based on top of it, so it looks like Leda would be able to support J1939 in a similar way - on lower level, it's just a protocol stack.

In Leda, we should ensure:

• Needed Kernel configuration and libraries are enabled and installed (this is partly done already, at least kernel module is enabled, but never tested it)
• sdv-health checks for availability of can_j1939
• We provide an example container which uses it, that may be
  • low level: just a data logger on can_j1939 protocol level (tcpdump plugin)
  • middle level: Kuksa.VAL DBC Feeder with enabled J1939 Mode
  • higher level: actual diagnostics according to SAE J1939-73
• Documentation/Tutorial is available

A more realistic example could be placed on top, similar to Seat Service.

[mikehaller]

This issue is mainly blocked because of the license for the SAE J1939 Digital Annex, which makes it impossible to contribute related (derived work) to an OSS project, where actual signal names etc. are used.