DESK-MX-L-AN-0007: Getting Started With QT Creator

Setting up Qt Creator to build for XELK

Qt Creator Installation

To install Qt Creator inside your toolchain launch a terminal emulator and run

dvdk@vagrant-ubuntu-trusty-64:~$ cd axel/

dvdk@vagrant-ubuntu-trusty-64:~/axel$ ./qt-creator-opensource.run

An installation wizard will appear. Clik Next to proced with the installation.

Select Skip.

Select Next.

Select the install directory or click Next.

Select Next.

Click Next again.

And thenclick Install and complete the installation.

Then Finish to exit the setup wizard.

Automatic configuration

Now it is necessary to add the definition of your board before developing and compiling your applications.

In order to add the device information automatically, run the following commands inside your terminal emulator.

dvdk@vagrant-ubuntu-trusty-64:~$ cd axel/

dvdk@vagrant-ubuntu-trusty-64:~/axel$ ./qt-post-install.sh

If the installation process went ok, you should see inside the Tools->Options -> Kits a kit named XELK.

Select the Kits tab and make sure that your configurations mateches the one displayed.

Manual configuration

Devices

Go to Tools->Options menu

select Devices and click Add

Choose the Generic linux device

Insert the IP address of your device, the username and password of the root account. Make sure that the device is connected to the network and your virtual machine is configured to use a bridge connection.

Click Next.

If everything went ok you should see a dialog like the image below.

And finally this is how the Devices window should look like.

GCC & Cross Compilation

Next you need to configure the cross compilation tool inside Build & Run -> Compiler.

Click Add -> GCC and add the compiler path.

/home/dvdk/axel/sdk/latest/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc

And click Apply.

Do the same for the C++ cross compilation tool.

/home/dvdk/axel/sdk/latest/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++

Debugger GDB

Now it is necessary to add a debugger. In order to do this go to the Debuggers tab and click Add

And then select the GDB debugger at the location

/home/dvdk/axel/sdk/latest/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gdb

and click Apply.

Qt Version

Next you need to add the Qt Version installed on your device. Go to Qt Version click Add and select the following qmake file.

/home/dvdk/axel/sdk/xelk-3.0.1/sysroots/x86_64-pokysdk-linux/usr/bin/qt5/qmake

Kits

The last step is to add a new kit. Go to Kits and click Add and complete the information as shown below.

Pay attention that in Qt mkspec you need to write

linux-oe-g++

After this your setup is complete and you can proceed and create your Qt applications.

Qt application example

Now that the setup is finished, you can create your first application Open a new terminal and source the environment variables with the command.

dvdk@vagrant-ubuntu-trusty-64:~$ ./env.sh

In the same terminal digit the following command if you didn't change the installation directory.

dvdk@vagrant-ubuntu-trusty-64:~$ ./qtcreator-4.3.0/bin/qtcreator

It is important to repeat the previous two step each time you close the Qt Creator application.

Now click on New Project

Select Application Qt Widgets Application and click Choose...

Now call the Project Test and press Next.

Select the XELK Kit and click Next.

Choose the class name for your application.

Click Finish to conclude the setup.

To add a clickable button to your application, select the Edit window and select Test->Forms->mainwindow.ui

Click on Push Button in the Buttons tab and drag it to the main window view. In order to edit the text displayed by the label, double click it and write "Hello World!".

After that, you need to insert the following two line inside the Test.pro file

target.path = /tmp/Test # path on device

INSTALLS += target

Where /temp/Test is the path in which your application will be downloaded inside the device.

The last step before running the application inside the device is to select the Project window select the Run configuration and as Arguments.

-platform eglfs

After these changes you are ready to debug your application inside your board with the Run/Debug command