Noob needs help with Elo Touchscreen

Vulpecula

Thank you for your reply. I have it finally working. With the following environment variables. Especially the LD_PRELOAD was important. After adding that variable the touchscreen starting to work. I think its because I used tslib from github . Thanks for you patience.

Environment variables

LD_LIBRARY_PATH=/usr/local/lib
LD_PRELOAD=/usr/local/lib/libts-0.0.so.0
QT_DEBUG_PLUGINS=1
QT_PLUGIN_PATH=/usr/lib/plugins
QT_QPA_FONTDIR=/usr/lib/fonts
QT_QPA_GENERIC_PLUGINS=tslib:/dev/input/event0
QT_QPA_PLATFORM=eglfs
QT_QPA_PLATFORM_PLUGIN_PATH=/usr/lib/plugins/platforms
TSLIB_CALIBFILE=/home/pi/pointercal
TSLIB_CONFFILE=/usr/local/etc/ts.conf
TSLIB_CONSOLEDEVICE=none
TSLIB_FBDEVICE=/dev/fb0
TSLIB_PLUGINDIR=/usr/local/lib/ts
TSLIB_TSDEVICE=/dev/input/event0
TSLIB_TSEVENTTYPE=INPUT

SGaist

So you have it working now properly ?

Vulpecula

@SGaist

Well, I tought it works completely but there is one problem. When I push on the MouseArea the cursor is going to that position where I push but most of the time there is not a onclicked event triggered. When I push multiple times on the mousearea sometime the onclick event will be triggered, maybe 1 out of 10 á 15 times.

I have connected the touchscreen to a Windows machine en every push on the screen is triggered. This is why I thing that there is something wrong with my tslib configuration.

Can you help me with this problem?

SGaist

Did you run ts_calibrate ?

Vulpecula

Yes, and it works fine. I also got a pointercal file. And ts_test works also. Maybe the debug output is usefull.


QML debugging is enabled. Only use this in a safe environment.
QFactoryLoader::QFactoryLoader() checking directory path "/usr/local/qt5pi/plugins" ...
QFactoryLoader::QFactoryLoader() checking directory path "/opt/test2/bin" ...
QFactoryLoader::QFactoryLoader() looking at "/opt/test2/bin/test2"
"Plugin verification data mismatch in '/opt/test2/bin/test2'" 
         not a plugin
QFactoryLoader::QFactoryLoader() checking directory path "/usr/local/qt5pi/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/platforms/libqeglfs.so"
Found metadata in lib /usr/local/qt5pi/plugins/platforms/libqeglfs.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "eglfs"
        ]
    },
    "className": "QEglFSIntegrationPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/platforms/libqlinuxfb.so"
Found metadata in lib /usr/local/qt5pi/plugins/platforms/libqlinuxfb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "linuxfb"
        ]
    },
    "className": "QLinuxFbIntegrationPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/platforms/libqminimal.so"
Found metadata in lib /usr/local/qt5pi/plugins/platforms/libqminimal.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "className": "QMinimalIntegrationPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/platforms/libqminimalegl.so"
Found metadata in lib /usr/local/qt5pi/plugins/platforms/libqminimalegl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimalegl"
        ]
    },
    "className": "QMinimalEglIntegrationPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/platforms/libqoffscreen.so"
Found metadata in lib /usr/local/qt5pi/plugins/platforms/libqoffscreen.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "className": "QOffscreenIntegrationPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/platforms/libqxcb.so"
Found metadata in lib /usr/local/qt5pi/plugins/platforms/libqxcb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/opt/test2/bin/platforms" ...
loaded library "/usr/local/qt5pi/plugins/platforms/libqeglfs.so"
QFactoryLoader::QFactoryLoader() checking directory path "/usr/local/qt5pi/plugins/egldeviceintegrations" ...
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/egldeviceintegrations/libqeglfs-brcm-integration.so"
Found metadata in lib /usr/local/qt5pi/plugins/egldeviceintegrations/libqeglfs-brcm-integration.so, metadata=
{
    "IID": "org.qt-project.qt.qpa.egl.QEGLDeviceIntegrationFactoryInterface.5.5",
    "MetaData": {
        "Keys": [
            "eglfs_brcm"
        ]
    },
    "className": "QEglFSBrcmIntegrationPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("eglfs_brcm")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/egldeviceintegrations/libqeglfs-kms-integration.so"
Found metadata in lib /usr/local/qt5pi/plugins/egldeviceintegrations/libqeglfs-kms-integration.so, metadata=
{
    "IID": "org.qt-project.qt.qpa.egl.QEGLDeviceIntegrationFactoryInterface.5.5",
    "MetaData": {
        "Keys": [
            "eglfs_kms"
        ]
    },
    "className": "QEglFSKmsIntegrationPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("eglfs_kms")
QFactoryLoader::QFactoryLoader() checking directory path "/opt/test2/bin/egldeviceintegrations" ...
loaded library "/usr/local/qt5pi/plugins/egldeviceintegrations/libqeglfs-brcm-integration.so"
Unable to query physical screen size, defaulting to 100 dpi.
To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
QFactoryLoader::QFactoryLoader() checking directory path "/usr/local/qt5pi/plugins/generic" ...
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/generic/libqevdevkeyboardplugin.so"
Found metadata in lib /usr/local/qt5pi/plugins/generic/libqevdevkeyboardplugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QGenericPluginFactoryInterface",
    "MetaData": {
        "Keys": [
            "EvdevKeyboard"
        ]
    },
    "className": "QEvdevKeyboardPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("evdevkeyboard")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/generic/libqevdevmouseplugin.so"
Found metadata in lib /usr/local/qt5pi/plugins/generic/libqevdevmouseplugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QGenericPluginFactoryInterface",
    "MetaData": {
        "Keys": [
            "EvdevMouse"
        ]
    },
    "className": "QEvdevMousePlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("evdevmouse")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/generic/libqevdevtabletplugin.so"
Found metadata in lib /usr/local/qt5pi/plugins/generic/libqevdevtabletplugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QGenericPluginFactoryInterface",
    "MetaData": {
        "Keys": [
            "EvdevTablet"
        ]
    },
    "className": "QEvdevTabletPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("evdevtablet")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/generic/libqevdevtouchplugin.so"
Found metadata in lib /usr/local/qt5pi/plugins/generic/libqevdevtouchplugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QGenericPluginFactoryInterface",
    "MetaData": {
        "Keys": [
            "EvdevTouch"
        ]
    },
    "className": "QEvdevTouchScreenPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("evdevtouch")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/generic/libqlibinputplugin.so"
Found metadata in lib /usr/local/qt5pi/plugins/generic/libqlibinputplugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QGenericPluginFactoryInterface",
    "MetaData": {
        "Keys": [
            "libinput"
        ]
    },
    "className": "QLibInputPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("libinput")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/generic/libqtslibplugin.so"
Found metadata in lib /usr/local/qt5pi/plugins/generic/libqtslibplugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QGenericPluginFactoryInterface",
    "MetaData": {
        "Keys": [
            "Tslib",
            "TslibRaw"
        ]
    },
    "className": "QTsLibPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("tslib", "tslibraw")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5pi/plugins/generic/libqtuiotouchplugin.so"
Found metadata in lib /usr/local/qt5pi/plugins/generic/libqtuiotouchplugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QGenericPluginFactoryInterface",
    "MetaData": {
        "Keys": [
            "TuioTouch"
        ]
    },
    "className": "QTuioTouchPlugin",
    "debug": false,
    "version": 329218
}


Got keys from plugin meta data ("tuiotouch")
QFactoryLoader::QFactoryLoader() checking directory path "/opt/test2/bin/generic" ...
loaded library "/usr/local/qt5pi/plugins/generic/libqtslibplugin.so"
Found metadata in lib /usr/local/qt5pi/qml/QtQuick.2/libqtquick2plugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QQmlExtensionInterface/1.0",
    "MetaData": {
    },
    "className": "QtQuick2Plugin",
    "debug": false,
    "uri": [
        "QtQuick.2"
    ],
    "version": 329218
}


loaded library "/usr/local/qt5pi/qml/QtQuick.2/libqtquick2plugin.so"
Found metadata in lib /usr/local/qt5pi/qml/QtQuick/Window.2/libwindowplugin.so, metadata=
{
    "IID": "org.qt-project.Qt.QQmlExtensionInterface/1.0",
    "MetaData": {
    },
    "className": "QtQuick2WindowPlugin",
    "debug": false,
    "uri": [
        "QtQuick.Window.2"
    ],
    "version": 329218
}


loaded library "/usr/local/qt5pi/qml/QtQuick/Window.2/libwindowplugin.so"
QFactoryLoader::QFactoryLoader() checking directory path "/usr/local/qt5pi/plugins/accessible" ...
QFactoryLoader::QFactoryLoader() checking directory path "/opt/test2/bin/accessible" ...
User requested stop. Shutting down...
Application finished with exit code 1.

SGaist

What parameter are you passing to your application ?

Vulpecula

@SGaist

LD_LIBRARY_PATH=/usr/local/lib
QT_DEBUG_PLUGINS=1
QT_PLUGIN_PATH=/usr/lib/qt5pi/plugins
QT_QPA_EGLFS_HIDECURSOR=1
QT_QPA_FB_DISABLE_INPUT=1
QT_QPA_FONTDIR=/usr/lib/fonts
QT_QPA_GENERIC_PLUGINS=tslib:/dev/input/event0
QT_QPA_PLATFORM=eglfs
QT_QPA_PLATFORM_PLUGIN_PATH=/usr/lib/qt5pi/plugins/platforms
TSLIB_CALIBFILE=/usr/local/etc/pointercal
TSLIB_CONFFILE=/usr/local/etc/ts.conf
TSLIB_CONSOLEDEVICE=none
TSLIB_FBDEVICE=/dev/fb0
TSLIB_PLUGINDIR=/usr/local/lib/ts
TSLIB_TSDEVICE=/dev/input/event0
TSLIB_TSEVENTTYPE=INPUT

This are all the environment variable. Arguments field is empty.

When i insert a USB mouse into the raspberry the mouse works directly and every mouseclick is triggered

Vulpecula

[edit]

Adding one more variable did the trick.

QT_QPA_EGLFS_DISABLE_INPUT=1

Thank you for your help. It now works totally fine. Topic can be set as Solved

SGaist

Great !

Thanks for sharing your findings !

You can mark it as solved :) Use the "Topic Tool" button and change the type of the thread to a question, then you'll be able to mark it as solved :)

Vulpecula

I just started from scratch with my raspberry pi and ubuntu installation. I first installed my raspberry pi with tslib from kergoth. After that I followed the cross compile tutorial RaspberryPi2EGLFS. When I was done I opened my QT project and tried to run the project, but now I get a segmentation fault error. Could some tell me what's wrong?

Application Output in QT Creator

Got keys from plugin meta data ("tuiotouch")
QFactoryLoader::QFactoryLoader() checking directory path "/opt/Test/bin/generic" ...
loaded library "/usr/local/qt5pi/plugins/generic/libqtslibplugin.so"
bash: line 1: 13629 Segmentation fault      DISPLAY=':0.0' LD_LIBRARY_PATH='/usr/local/lib' QT_DEBUG_PLUGINS='1' QT_PLUGIN_PATH='/usr/lib/qt5pi/plugins' QT_QPA_EGLFS_DISABLE_INPUT='1' QT_QPA_EGLFS_HIDECURSOR='0' QT_QPA_FB_TSLIB='1' QT_QPA_FONTDIR='/usr/lib/fonts' QT_QPA_GENERIC_PLUGINS='tslib:/dev/input/event0' QT_QPA_PLATFORM='eglfs' QT_QPA_PLATFORM_PLUGIN_PATH='/usr/lib/qt5pi/plugins/platforms' TSLIB_CALIBFILE='/usr/local/etc/pointercal' TSLIB_CONFFILE='/usr/local/etc/ts.conf' TSLIB_CONSOLEDEVICE='none' TSLIB_FBDEVICE='/dev/fb0' TSLIB_PLUGINDIR='/usr/local/lib/ts' TSLIB_TSDEVICE='/dev/input/event0' TSLIB_TSEVENTTYPE='INPUT' WIRINGPI_GPIOMEM='1' /opt/Test/bin/Test

SGaist

Start it with the debugger then you'll be able to get a stack trace.

Vulpecula

Sorry for reopening this issue. It seems to be that i forgot a crucial part of my notes for reinstalling my setup. After following the steps on this page I've got it working again. Thanks for replying again.