Re: AGL on Raspberry PI 3b+ with PICAN2 and dual display

["Berislav Klepic" <berislav.klepic@xxxxxxx>]

Hi, 

Thank you for your input. 
I am finally able to compile the hvac demo application using a docker (after
fixing some stuff within the image manually). 
Now I try to bring up the can0 with the prebuild master rpi3 image.
I use the PICAN2 board as mentioned here:
https://jira.automotivelinux.org/browse/SPEC-323 i followed the exact same
steps (adding to /boot/config.txt), but I am still not able to bring the CAN
Bus up. 

I used following commands: 
modprobe can
ip link add dev can0 type can -> RTNETLINK answers: Operation not supported
ip link set can0 up type can -> Cannot find device "can0"

Did I miss something to get this to work?

Best regards
Berislav



-----Ursprüngliche Nachricht-----
Von: Jan-Simon Moeller [mailto:dl9pf@xxxxxx] 
Gesendet: Dienstag, 14. August 2018 18:41
An: Berislav Klepic <berislav.klepic@xxxxxxx>;
automotive-discussions@xxxxxxxxxxxxxxxxxxxxxxxxx
Betreff: Re:  AGL on Raspberry PI 3b+ with PICAN2 and dual
display



Am 10.08.2018 um 15:03 schrieb Berislav Klepic:
>
> Hi,
>
> I am new to the AGL project. After reading and trying out some stuff 
> without success I try to ask here.
>
> My Setup is a Raspberry PI 3b+ with the PICAN2 extension board and the 
> official 7? touch display.
>
> Further I connect a 1920x1080 display via hdmi.
>
Likely the pi is not powerful enough to drive 2 screens with different sets
of 3d content.
>
>
> I want to bring up an AGL image with the HVAC demo app using the CAN 
> bus to communicate. Further the navigation app should run and and 
> mimimap, engine speed and so on should be shown on the second screen 
> like in the video of ces 2017 (https://www.automotivelinux.org/videos) .
>
The demo uses 2 boards actually. One for the main demo and one for the
engine speed.

> I already tired some prebuild binaries like the release 5.1.0 or the 
> master branch and may more to get a running RPI with 2 screens, but I 
> always got problems. Sometimes the resolution was wrong (if I fix it 
> in western.ini everything freeze on start), another time no screen is 
> shown and the raspberry does not boot.
>

> What is also very interesting for me is: There are only demo 
> applications. Is there somewhere any clean image without demos, where 
> I can start to build application by myself?
>

If you use master, you can try e.g.   agl-image-minimal (terminal) and
agl-image-ivi (weston) as a base for own experiments.
Or you create your own image definition similar to agl-demo-platform.bb and
remove some apps.

> I think of reimplementing such a demo application with CAN-Bus support 
> to get a better understanding. I think of something like an image with 
> just the homescreen without demo apps, just the apps I install manually.
>
Great idea! That is possible of course. Create your own image recipe for
this.


Best,
Jan-Simon



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