This instruction is valid for Toradex Colibri iMX6, Toradex Colibri iMX6ULL and Toradex Colibri iMX7.

To successfully set up the Boot to Qt software stack, you must closely follow the instructions in this section and perform all the described tasks.

In case of problems, see Troubleshooting.

Note: After you have installed the Boot to Qt software stack and want to connect to the target device with SSH or a serial cable, you can access the device by using the user root and an empty password.

1. Requirements for Development Host

Before you install the Boot to Qt software stack, you should install the required software on the development host:

• Requirements for Linux/X11
• Requirements for Windows

2. Installing Boot to Qt Software Stack

The Boot to Qt software stack is available as a Qt Board Support Package (QBSP) that can be installed with the MaintenanceTool application or directly from the Qt online installer.

• Download the QBSP file from the Qt Account Downloads page. QBSP files have either a .qbsp or .7z extension.
• Start the MaintenanceTool application and select Add or Remove Components.
• Select Browse QBSP Files, locate the downloaded file, and select Open.
• The Select Components view is updated with content from the QBSP.

Select the Boot to Qt software stack for Toradex Colibri iMX6 and Toradex Colibri iMX7 with the following steps:

• Select Qt > Qt for Device Creation.
• Select the Boot to Qt software stack version.
• If you want to install Boot to Qt software stack for Toradex Colibri iMX6, select Toradex Colibri iMX6.
• If you want to install Boot to Qt software stack for Toradex Colibri iMX6ULL, select Toradex Colibri iMX6ULL.
• If you want to install Boot to Qt software stack for Toradex Colibri iMX7, select Toradex Colibri iMX7.
• Select Next.

To finish the installation, follow the instructions in the installation wizard.

Installation Content

The Boot to Qt software stack provides a system image (<target-device> Linux System) and a toolchain (<target-device> Linux Toolchain) for each target device. The system image contains the Boot to Qt software stack and needs to be flashed to the SD card or directly to the target device (see 3. Installing Boot to Qt on Target Device). building and developing applications for the target devices.

Note: Building the Boot to Qt system image and toolchain are not supported on Windows. Thus the sources of the Boot to Qt software stack are available only via the Linux online installer.

General Installation Issues for Linux

On Linux, remember to allow the execution of the installer binary. You can do this by using one of the following methods:

• On the command line enter the chmod +x <filename> command.
• Right-click the file, and select Properties > Permissions > Allow executing file as program.

Note: Do not execute the installer as a root user or with sudo.

Installation Directory

The installer will let you select a directory where the Boot to Qt software stack will be installed. In this documentation, the installation directory is referred to as <INSTALL_DIR>. The default installation directories are:

• ~/Qt on Linux
• C:\Qt on Windows

3. Installing Boot to Qt on Target Device

Before you can test your Qt applications on the target device, you must flash the target device with an image containing the Boot to Qt software stack. After you have successfully flashed your device, Boot to Qt Demo Launcher automatically appears on the screen when you power on the device.

To flash the image, you can use either Toradex Easy Installer or Qt's Flashing Wizard. With Toradex Easy Installer, the image is flashed to the device's internal eMMC flash memory. Flashing Wizard uses an external SD card.

Flashing with Toradex Easy Installer

When Toradex Easy Installer is connected to the Internet, it automatically provides the latest Boot to Qt image in its image list but that is not necessarily compatible with your Boot to Qt installation. When you flash with Toradex Easy Installer, you should always use the *.tezi.tar package that is included into the Boot to Qt installation.

Flash the Boot to Qt image with Toradex Easy Installer as follows:

1. If your target device does not have the pre-installed Toradex Easy Installer, follow instructions in Load Toradex Easy Installer to load Toradex Easy Installer.
2. Your Boot to Qt installation has the *.tezi.tar package under <Qt installation directory>/<Qt version>/Boot2Qt/<target>/images. Extract the package to an SD card or a USB flash drive.
3. Flash the image from the SD card or the USB flash drive with Toradex Easy Installer. See Install Images with Toradex Easy Installer.

Flashing with Qt's Flashing Wizard

Use Flashing Wizard to flash the image to your Toradex Colibri device:

• Connect your SD card reader to the development host. Make sure that the SD card size is at least 2 GB.
• Launch Qt Creator.
• Select Tools > Flash Boot to Qt Device, and follow the instructions in Flashing Wizard.

In order to boot from the external SD card, U-Boot needs to be updated.

Booting from External SD Card

Connect a serial cable to the device and enter into the U-Boot environment by pressing any key before the autoboot.

Enter following commands into U-Boot:

run setupdate
run update

Reset or power cycle the device to start the new U-Boot. To reset the U-Boot environment to new default values, enter the following commands in the U-Boot command line:

env default -a
saveenv

New U-Boot commands are now stored into the device.

For more information about the boot process on the Toradex Colibri devices, see Toradex Linux Booting.

4. Configuring a Device Kit in Qt Creator

After you have prepared the target device, you must set up the development tools in Qt Creator for your device. That is, you must configure your target device to be used for each build and run kit.

Connect your device to the development host via USB and launch Qt Creator. In Qt Creator:

1. Select Tools > Options > Build & Run > Kits.
2. Select one of the predefined kits starting with Boot to Qt... that matches the type of your device.
3. Select the correct device in the Device field.
4. Select OK.

You are now ready to start developing with Qt for your device. For detailed information about how to deploy Qt projects to the device, see Tutorial: Deploying Your First Project with Boot to Qt.

5. Powering on with Boot to Qt Demo Launcher

After you have successfully flashed your device with Boot to Qt software stack, Boot to Qt Demo Launcher automatically appears on the screen when you power on the device. With Boot to Qt Demo Launcher, you can test the Boot to Qt demos that are included into Boot to Qt software stack images. For more information, see Qt Device Creation Demos.