Re: Setting CAN FD data bitrate with libsocketcan

["André Hartmann" <aha_1980@gmx.de>]

Hi Lars,

thanks for your answer.

Am 10.09.2017 um 13:25 schrieb Lars Susaas:
>> However, I did not find a possibility to set the CAN FD data bitrate.
>> Is there a way or does no such function exist yet? If it does not exist, are
>> there plans to support it?
> 
> Hi,
> 
> Was looking for the same thing a little while back.
> Did not find it, so i made some changes to libsocketcan as part of my
> work on canFestival (canOpen stack)

Ah Ok, I like to use it for QtSerialBus [1]. Therefore I'm a bit limited 
with including 3rd party libraries (licenses and so) and we decided to 
use the system-wide libsocketcan. Which now turns out to miss (at least) 
one feature.

> You can check out work here:
> https://bitbucket.org/nimrof/canfestival-3-asc/src/53f18ae80f39901b61ddf6d04b9358893ac518db/drivers/can_socket?at=canfd
> 
> Just copy the following files into libsocketcan:
> can_netlink.h
> libsocketcan.c
> libsocketcan.h
> 
> Its yet testet that well, so may contain bugs.
> 
> To set the databaudrate you have to set baudrate first with
> 'can_set_bitrate' then you can use 'can_set_data_bitrate'.

I will definitely have a look this weekend. Have you considered 
upstreaming your changes back to libsocketcan?

Best regards,
André

[1] http://code.qt.io/cgit/qt/qtserialbus.git/