Qt for MCUs

@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.

thanks for your replies. :)

@JKSH I got it. thank you

A bugreport was created because of this: https://bugreports.qt.io/browse/QTMCU-177

Hi, If memory serves well, yocto builds the cross-compiler for your target so you should not really have to worry about that. You might want do check this compatibility table between yocto and Qt 6.

@sierdzio Thank you very much for the answer. I tried some tips, but unfortunately not all were applicable in my case, since let's say the same Q_OBJECT is missing in Qt microcontrollers. And in the examples that I'm looking at, it seems that there is no such thing (Q_OBJECT), which is why I ran into a problem, since everything works in the usual Qt for Desktop but not in Qt MCU

Ah, you mean in QML, you should have said so :-) In this case you need to look at JavaScript docs for strings. Maybe this will work: property string str: "abc" onClicked:{ str = str.slice(0, -1); console.log(str) }

@Mitko If you have an API/interface to Python routines you can access them from a Qt application. I cannot speak for what Solidworks provides or whether you can import something from it presumably as Python code into PyCharm.