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  • Nov 20 13:02
    LocutusOfBorg closed #517
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Matthijs ter Woord
@mterwoord
including partitioning table, boot partition, etc
thesillywhat
@thesillywhat
@mterwoord so does it matter which sdimg, I use to write into my SD card. Will I see a difference?
thesillywhat
@thesillywhat
are all these questions answered in the reference manual
?
Carton32
@Carton32
The file without timestamp is a symlink to the one with timestamp
I use dd to copy my images and always use the symlink as if arg
Matthijs ter Woord
@mterwoord
@Carton32 I usually have the with and without timestamp ones which are exactly same
in his case he has <timestamp>.rootfs.img and cm3.rpi-sdimg
those are same? that would mean rootfs actually contains more than just the 1 fs..
would be weird, imo..
thesillywhat
@thesillywhat
Also what are the advantages of using boot2qt then using yocto with qt5 layer for raspberry pi. Is the answer as simple as boot2qt is more designed for system using qt applications
thesillywhat
@thesillywhat
@Carton32 Have you tried creating raspberrypi image with Qt5 layer
?
So I downloaded the qt5 meta layer added that in bblayer.conf. Now all I have to do is run init script and bitbake command to make a qt5 image
Is this right?
bitbake qt5-image
Carton32
@Carton32
Yes I have an application that runs on eglfs (single window app)
What kind of Qt5 app do you have ?
I never tried the qt5-image
thesillywhat
@thesillywhat
I have an application that runs on xcb and eflfs
  • on either xcb or eglfs
so how did you proceed with it
am i atleast right on the bblayer.conf stuff ?
thesillywhat
@thesillywhat

@agherzan Whats the difference between setting the Machine value to Raspberrypi3 and raspberrypi-cm3.
The reason behind this question is that.

I had a image file that I downloaded from the raspberrypi website. I was able to use the same image file on raspberrypi 3B+ and on the compute module with a little change to the config.txt

And Can I do same with the generated yocto images?

Andrei Gherzan
@agherzan
@thesillywhat we currently don't support that. That is done by having multiple kernels in the boot partition and fw loading the right now.
I am looking into having this for rpi4-64 and rpi3-64 in the near future.
But right now each board has its own machine.
thesillywhat
@thesillywhat
@agherzan understood. Thanks
thesillywhat
@thesillywhat
Is it possible to change the raspberry-pi image.. It appears during bootup with a progress bar in front of it
Carton32
@Carton32
Yes with psplash receipe
I can help you tomorrow for qt (at least the best I can)
thesillywhat
@thesillywhat
@Carton32 thanks
thesillywhat
@thesillywhat
Where is this make image script located
?
thesillywhat
@thesillywhat
nevermind found it
Carton32
@Carton32
@thesillywhat I can give you what I did to run my eglfs app on raspberrypi3 machine. Telle me when you're wake xD
Matthijs ter Woord
@mterwoord
regarding psplash: how would i change the image: bbappend a different constant?
any samples of files doing so?
Carton32
@Carton32

FILESEXTRAPATHS_prepend := "${THISDIR}/files:"

SPLASH_IMAGES = " file://psplash-mysplash.png;outsuffix=default"
ALTERNATIVE_PRIORITY_psplash-default[psplash] = "999"
INITSCRIPT_PARAMS = "start 5 S . stop 20 0 1 6 ."

I don't know if the syntax is 100% correct (in particular with the init parameters) but it works

This is in my own layer in a recipes-core/psplash/psplash_%.bbappend
and the image is in recipes-core/psplash/files/
Matthijs ter Woord
@mterwoord
@Carton32 Awesome! Thanks
Is that a full-screen splash?
Carton32
@Carton32
yes
Matthijs ter Woord
@mterwoord
Any weird things related to resolution or format of the png?
Carton32
@Carton32
The resolution of my PNG is 427x427px with a transparent background
Matthijs ter Woord
@mterwoord
And I'm guessing the image then is centered?
Carton32
@Carton32
yes
Try with a "dummy" picture to see the result
Matthijs ter Woord
@mterwoord
yeah. But having a bit more info upfront helps a lot! Thanks!