Mobile and Embedded

@jsulm , do you refer to App or Qt deploy? I use the default static linking deployment for the apps and simply click on "Deploy" after build the project. About Qt, i try to follow the guide for de BBB (BeagleBoneBlack ARM board) on the Qt Wiki, uploading the files via Ssh. With a partner help, I realize that the plugins needed on the BBB are missing: ubuntu@beaglebone:/usr/local/qt5bbb/plugins/platforms$ ls libqlinuxfb.so libqminimal.so libqoffscreen.so libqvnc.so Checking my ./configure , i let the -no-opengl flag, because the wiki exclude it and when i try to use it, doesn't work. I try to run the following ./configure: sudo ./configure -no-gcc-sysroot -device linux-beagleboard-g++ -device-option CROSS_COMPILE=/opt/gcc-linaro-7.5.0-2019.12-x86_64_armv8l-linux-gnueabihf/bin/armv8l-linux-gnueabihf- -sysroot /mnt/bbb-rootfs -opensource -confirm-license -optimized-qmake -reduce-exports -release -make libs -prefix /usr/local/qt5bbb -hostprefix /usr/local/qt5bbb -qt-zlib -qt-libpng -no-openssl -opengl es2 -eglfs -v But i got this error message: ERROR: Feature 'opengles2' was enabled, but the pre-condition 'config.win32 || (!config.watchos && !features.opengl-desktop && libs.opengl_es2)' failed. ERROR: Feature 'eglfs' was enabled, but the pre-condition '!config.android && !config.darwin && !config.win32 && features.egl' failed. ERROR: The OpenGL functionality tests failed! You might need to modify the include and library search paths by editing QMAKE_INCDIR_OPENGL[_ES2], QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform. I still trying to fix it, thanks for the reply!

@Devoo said in Android app cannot be published due to targetSdkVersion: qtTargetSdkVersion=28 This should be 29. You can set it up in your AndroidManifest file easily (Qt Creator has a nice editor for this file, too).

Hi While Windows does not support this out of the box, its possible to install codec from the store [image: kppom2.png] However, this format works best on Macs/iPhone.

QPixmap px( ":/resources/white-arrow-down.png" ); QPixmap pxr( px.size() ); pxr.fill(QColor(255, 255, 255)); pxr.setMask(px.createMaskFromColor( Qt::transparent)); ui->label_11->setPixmap(pxr);

@djscodes There should be the actual error somewhere above the line you posted.

Hi @SGaist , Thanks for the information.

I have the same problem with ELP HD Usb camera. Probably the problem with the camera hardware, I think there is no WhiteBalance for example. You should get camera stream from Usb till qt library has fixed.

Hi, That's rather a question you should bring to the GStreamer folks. For the Qt side you can then use QMediaPlayer as shown here with a custom pipeline.

Solution found. As it seems, in my code I put commands to read the port in if (with function canReadLine()). When I commented the whole condition out leaving just the reading, everything worked fine. Maybe someone will find a solution here. Cheers

https://codereview.qt-project.org/c/qt/qtbase/+/314522/1/mkspecs/features/toolchain.prf

@rtvideo said in Cross Compile qt to IMX6: I am trying to run a Qt program made in a Linux 64 bit Ubuntu desktop (18.04) on a IMX6 SabreLite that has Ubuntu 18.04 installed as well Have you set up a cross-compile environment? Is there instructions or even an SDK for such device in order to cross-compile Qt apps for it? I'm not expert on IMX6-based devices, so not sure if you have same device or not, but have you checked this Qt guide regarding IMX6 support? I know that there is a package called "libimxvpuapi" that if I could get into my .pro file and compile it, it may work on my imx6 by running the binary file. Again, not expert on those IMX6 devices, but from this official Freescale page, the libimxvpuapi library provides an API for using hardware video codecs on i.MX platforms so it doesn't look like it will help you run your Qt app built for a Linux 64 bit Ubuntu desktop (18.04) work on my imx6 by running the binary file.

and when connect a wrong mac address, it will block too,no error or slot event appear, I don't konw why

@AxAz said in Mysql on Android: How would I go about setting up mysql on android for an app that I'm working on? Why do you want to use MySQL and not SQLite? I don't think you would install MySQL Server on your Android device and it is not a good practice to allow connection to MySQL-Server from outside. Most the time connection are only allowed from localhost.

Legally speaking; Should it ? And should we include the license files ? I think so, yes. (but of course please ask a lawyer etc.) ;-) I'm using Yocto for building my rootfs including Qt libraries. Embedded board and open source Qt? Are your users able to replace Qt libs (LGPLv3) or is your code GPLv3?

@sandro4912 said in Java compilation on Android: And what about the QML Files how are they interpreted to Java? Java does not know about QML, that is handled only by C++.

I tried on 5.15.1 source and it has the same error but on another file.