Add Qtgamepad cross compiling qt for raspberrypi0-wifi

davidino

Goodmorning,
I've built a working image and toolchain for raspberrypio-wifi starting from b2qt distro.
I could modify the b2qt-embedded-qt5-image.bb recipe as follow for having qtcharts but it doesn't work with qtgamepad. More precisely, it doesn't warn any error or mistake but inside the toolchain path there is no trace of qtgamepad.
Has anyone faced this problem?
Thank you.

IMAGE_INSTALL += "qtcharts qtgamepad"

SGaist

Hi,

I haven't used Boot2Qt yet but did you check that you have all dependencies required to build the module ?

davidino

Hello StGaist,
regarding the dependencies, I tried adding the ones indicated in the following link, in IMAGE_INSTALL but unsuccessfully.
https://layers.openembedded.org/layerindex/recipe/59814/
In toolchain path inside Qt3DInput, regarding qtgamepad, there is only the qgamepadinput_p.h, shown below. Don't know if this information can help.

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#ifndef QGAMEPADINPUT_P_H
#define QGAMEPADINPUT_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of other Qt classes.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <Qt3DInput/qabstractphysicaldevice.h>

#include <Qt3DInput/private/qt3dinput_global_p.h>

QT_BEGIN_NAMESPACE

namespace Qt3DInput {
class QGamepadInputPrivate;

class QT3DINPUTSHARED_PRIVATE_EXPORT QGamepadInput : public QAbstractPhysicalDevice
{
    Q_OBJECT
    Q_PROPERTY(int deviceId READ deviceId WRITE setDeviceId NOTIFY deviceIdChanged)
public:
    explicit QGamepadInput(Qt3DCore::QNode *parent = nullptr);

    int deviceId() const;
    void setDeviceId(int deviceId);

Q_SIGNALS:
    void deviceIdChanged();

private:
    Q_DECLARE_PRIVATE(QGamepadInput)
};

} // Qt3DInput
QT_END_NAMESPACE

#endif // QGAMEPADINPUT_P_H

SGaist

Qt3D is not related to QtGamepad.

Did you set sdl2 in PACKAGECONFIG ?

davidino

Hello @SGaist,
I tried to add PACKAGECONFIG += "sdl2", it compiles but I cannot find qtgamepad cross-compiled. Reading on the net, qtgamepad is a new add-on library that comes version 5.12. My b2qt version is 5.11. Is that a possible reason why I cannot find it?
Thank you for your help.

SGaist

The module itself is already usable, it's in tech preview but you can use it with Qt 5.11

davidino

Hello @SGaist ,
if that so, I've run out any ideas. Instead of Qtgamepad, I can use simple linux GPIOs, but I was curious to try gamepad. Maybe in future b2qt version, they'll add qgamepad as default, so I'll see what I'm doing wrong.
Thank you for you time.

davidino

Hello to all,
After some more time, I succeeded to add qtgamepad. Basically, instead of modifying the image recipe b2qt-embedded-qt5-image.bb, I had to change the recipe contained in packagegrup packagegroup-b2qt-embedded-qt5-toolchain-target.bb.

RDEPENDS_${PN} += " \
    ${MACHINE_EXTRA_INSTALL_SDK} \
    packagegroup-core-standalone-sdk-target \
    \
    .....
    qtgamepad-dev \
    "

I believe that I can do this change in image recipe b2qt-embedded-qt5-image.bb using MACHINE_EXTRA_INSTALL_SDK +=qtgamepad-dev, not test though.