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Mobile and Embedded

The forum for developing everything embedded: Linux, WinCE, Symbian, MeeGo... you name it.
14.2k Topics 62.7k Posts
  • Android app with virtual keyboard problem

    black screen hide part of te
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  • [SOLVED]Qt cross compile Raspberry Pi

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    R
    Just an update: qtjsbackend is no more in recent versions due to changes in QML and the fact it uses its own JS engine now instead of V8. As for whether one needs the JS - if you work with QML - YES!
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    added them in rebult and ran qmake, then attempted it again. Breakpoints are still being ignored.
  • Failed upload files via SFTP. Could not open for reading

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  • Could not deploy qt application to raspberry pi!

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  • [SOLVED]Using objective-c class in qt c++

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    benlauB
    @jman Check my example project. It could be built on other platform: quickios/examples/quickiosexample at master · benlau/quickios Method: Place those .mm files in "ios {}" block in your .pro file quickios/quickiosexample.pro at master · benlau/quickios Use "#ifdef Q_OS_IOS..#endif" block in C++ code or use the SystemMessenger class from my project: Example: quickios/qisystemutils.mm at master · benlau/quickios
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    On openSUSE 12.3 x86_64 one needs to install binutils_gold
  • Android and Qt Purchasing API

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    Thx. Good to know. It's just very frustrating when you end up having to depend on a "black box" when it comes to something as simple as a purchasing API. End of rant.
  • Can I use QRadioTuner on Android devices ?

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    SGaistS
    Hi and welcome to devnet, AFAIK, QRadioTuner is not implemented on Android. As you may guess, it comes from that the fact that Android doesn't provide any API be it Java or native to access the FM hardware
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    SGaistS
    Hi, Yes, a minimal compilable project would be good. Unless people hit the same problem as you, recreating the same setup is not easy. You should also provide your Qt version and OS
  • Qt headers in IOS Xcode project. Linking Qt libs.

    ios macosx link xcode qt5.4 qt5 qt5.5
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    SGaistS
    I'd generate the Xcode project from a .pro file, that way you have everything setup for you
  • Is there is any tools in Qt for signal processing

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    @Buleron said: I hope this example helps you it is QML http://doc.qt.io/qt-5/qtquick-demos-stocqt-example.html Thanks for sharing such a valuable post. I like it a lot. Keep posting such topics further also. www.simpalm.com
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    Driver was the the right way to go, thanks for pointing this out. It turns out that the driver had a calibration method built in, but the transform matrix was not set to change the coordinates. I calculated the new matrix values based on the max coordinates displayed by evtest and the actual coordinates of the framebuffer, plugged them in to the driver code, compiled and ... it works!. Evtest displays correct coordinates and Qt works correctly with no tslib. I don't like the fact that calibration matrix is hardcoded into the driver, but I consider fixing this an extracredit activity to be done sometime in the future.
  • wrong connected line with multi-touch in iOS using my code

    ios widget qt5.4 creator
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  • Any idea for using QtWebView in QT Widget project for Android ?

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    SGaistS
    Hi and welcome to devnet, AFAIK, currently there's no widget API for that module but you could try with QQuickWidget to embed your QML in a QWidget application (note that I haven't tried that) Hope it helps
  • I can't compile for Android using Kubuntu 14.04

    android android sdk
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  • How to Cross-compile QT for ARM (IMX6)

    cross compile imx6 arm
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    @Phill-ONeill said: -prefix $usr -xplatform linux-arm-g++-cross -release -opensource -no-largefile -no-qml-debug -system-zlib -no-gif -qt-libpng -qt-libjpeg -qt-freetype -no-xcb -no-xkbcommon -no-pulseaudio -no-alsa -no-gtkstyle -nomake "examples tests" -no-rpath -no-nis -no-cups -no-fontconfig -no-kms -no-pch -no-directfb -no-sql-sqlite -no-xcb -eglfs -mtdev -opengl -tslib -skip qtactiveqt -skip qtconnectivity -skip qtdoc -skip qtenginio -skip qtgraphicaleffects -skip qtimageformats -skip qtlocation -skip qtmultimedia -skip qtsensors -skip qtserialport -skip qtsvg -v This gives me the following error: linux-arm-g++-cross: unknown argument @mokat said: sudo ./configure -opensource -confirm-license -developer-build -nomake examples -nomake tests -skip qtwebkit -device imx6 -prefix /usr/local/ Running this command gives me this: Creating qmake... .Done. Running configuration tests... Failed to process makespec for platform 'devices/linux-imx6-g++' Which gives me: Creating qmake... make: Nothing to be done for `first'. Running configuration tests... Failed to process makespec for platform 'devices/linux-imx6-g++' Project ERROR: CROSS_COMPILE needs to be set via -device-option CROSS_COMPILE=<path> Could not read qmake configuration file /home/bob/qt5/qtbase/mkspecs/devices/linux-imx6-g++/qmake.conf. Error processing project file: /dev/null So I add -device-option with: -device-option CROSS_COMPILE=/home/bob/Downloads/gcc-linaro-arm-linux-gnueabi/bin/arm-linux-gnueabi- sudo ./configure -v -opensource -confirm-license -developer-build -nomake examples -nomake tests -skip qtwebkit -device imx6 -prefix /usr/local/ -device-option CROSS_COMPILE=/home/bob/Downloads/gcc-linaro-arm-linux-gnueabi/bin/arm-linux-gnueabi- Which gives me the following Warnings: Creating qmake... .Done. Running configuration tests... Warning: Disabling pkg-config since PKG_CONFIG_LIBDIR is not set. Warning: Disabling pkg-config since PKG_CONFIG_SYSROOT_DIR is not set. Could not determine the target architecture! Turn on verbose messaging (-v) to see the final report. WARNING: Unable to find file .device.vars No QPA platform plugin enabled! If you really want to build without a QPA platform plugin you must pass -no-qpa-platform-guard to configure. Doing this will produce a Qt that can not run GUI applications. The dependencies needed for xcb to build are listed in src/plugins/platforms/xcb/README If I check this readme it tells me the dependencies I need and suggest using -qt-xcb to reduce dependencies. I have the dependencies so I add -qt-xcb to the end of my command sudo ./configure -v -opensource -confirm-license -developer-build -nomake examples -nomake tests -skip qtwebkit -device imx6 -prefix /usr/local/ -device-option CROSS_COMPILE=/home/bob/Downloads/gcc-linaro-arm-linux-gnueabi/bin/arm-linux-gnueabi- -qt-xcb This spew this pile of errors: http://pastebin.com/uh9EYs1y Would re-installing Ubuntu or something work? I'm really at the end of my options. Everywhere people seem to be able to run these ./configure commands with some options easily. For me it just spews lines of errors and stuff. As you can see above trying to get the command you use to work results in work followed by not working anywa