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

[Jan-Simon Möller <dl9pf@xxxxxx>]

Am Donnerstag, 23. August 2018, 15:15:42 CEST schrieb Berislav Klepic:
> 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?

Hmm, I'd guess that a kernel module might be missing on the rpi ... 
I thought we caught all the cases in 
https://git.automotivelinux.org/AGL/meta-agl/tree/meta-agl-bsp/recipes-kernel/
linux/linux/can-bus.cfg

but that might not be true and we miss a config to make it work for your 
interface. I see that  this is off. Is that your chipset ?
# CONFIG_CAN_EMS_USB is not set
or 
CONFIG_CAN_PEAK_USB=m

is the driver loaded at runtime ?

Best regards,
Jan-Simon


> 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


-- 
--
Jan-Simon Möller
dl9pf@xxxxxx
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