Qt for MCUs

as the error message mentioned, you are using "OnDemand" to load the image without giving "Cache" to extract.
https://doc.qt.io/QtForMCUs/qtul-qmlproject-imagefilesnode-mcu-resourcecachepolicy.html

I guess you are using PNG compression rather than RLE compression.

For RLE compression you don't have to enable
https://doc.qt.io/QtForMCUs/qtul-qmlproject-imagefilesnode-mcu-resourcecompression.html
this option is for PNG compression.

check your qmlproject file, if resourceCompression is true, try to change it to false.

@jsulm yes, i tried but they said like i need active QT license to get support directly from QT.

@Ronel_qtmaster
i use following command in cmake i solve this proble
install(TARGETS UntitledProject
ARCHIVE DESTINATION lib
LIBRARY DESTINATION lib)

Please provide a minimal, compilable example of your problem. No designer stuff needed to reproduce this issue.

@Nekk I meet the same situation on Yocto Kirkstone for iMX8.

@Sairaj build the QtWayland module.

There's not enough information in your screenshot to determine what triggers the permission denied.

Hi,

Which version of Qt ?
On which OS ?
Using which backend ?

@jsulm As I wrote above:

sudo usermod -a -G dialout <username>

@jsulm

Hi, Thanks for the reply.

Here, I Just took a reference Image.

There is a coolant temperature progress bar, which is in the Slanting Line.

And I need to fill the Progress Bar, with the color : blue.

@kkgg said in Qt6.6 for android file system:

driving force

What is "driving force"?
Can you explain better what you want to do?

@stvsl said in Text Rendering Issue in Qt for MCU Applications:

If you require additional details or examples to assist in the resolution process, please do not hesitate to reach out.

You need to provide your exact system configuration, build steps, and other relevant details in order for anyone to look at your issue effectively.

@stvsl said in Request for Enhancement in Qt for MCU Image Component:

I appreciate your attention to this matter and look forward to any updates or information regarding the inclusion of this enhancement in future releases.

This is not a good place for feature requests. The official place is Qt bug tracker, you can also try Qt development mailing list but since you are a commercial customer you can (should) voice your request through commercial support.

@jsulm, @JonB
Hello Both,

I found the reason for high CPU load.

Background:
We have our own devices and I'm working on creating user Interfaces on the display of our device. We have many qml files to create some objects which needs to displayed on the device.

We have a Software Tool which draws the objects on the PC using qml Files as per the user settings(like the size, position of the object on the display etc..). Then the objects are downloaded into our device.

Root cause for High Cpu Load, Inaccuracy of QTimer:
As a part of the objects that are created and downloaded from PC to the device, there is a ".gif(AnimatedImage)" object also.
We are setting the "playing" property of this qml object to "true". So, this object is causing high CPU load even though the page in which this object is present is made invisible(i.e "visible" property is changed to false). This is the reason also for the inaccuracy of the QTimer as AnimatedImage is consuming lot of CPU time and Qtimer is not triggered at the right time.

When I binded the "playing" property of "AnimatedImage" object with its "visible" property, the cpu load is very much reduced(from around 100% to around 15%). Only when I open the page which has "AnimatedImage" object, the cpu load is increasing back to around 100%.

Questions:

Any idea why "AnimatedImage" is causing such a high cpu load. Any CPU intensive operations are done by QT which are specific to AnimatedImages? The "cache" property of the "AnimatedImage" is false in high CPU load scenario. But if I change "cache" to true and open the page with "AnimatedImage", cpu usage is around 35%( but it was more than 100% when "cache" is false). How "cache" property is affecting the cpu usage of "AnimatedImage"?

Thanks in Advance.