Take the following steps when preparing NVIDIA DRIVE CX for Boot to Qt:

Note: It is important that you repeat the steps in this section after you update Qt Automotive Suite.

The image containing the Boot to Qt stack for the device, as well as the flashing tool are included in Qt Automotive Suite.

Installing the Boot to Qt Image

Connect the DRIVE CX board to the development host via USB, and set it in recovery mode by changing the position of J9 jumper on the board.

Then, run the flashing tool:

cd <INSTALL_DIR>
sudo 5.8/Automotive/tegra-t18x/flash-nvidia/flash_device.sh

After the installation is complete, replace the J9 jumper to its original position, and restart the device. After reboot, check that the automotive UI appears.

Setting up USB Access

On Ubuntu Linux, the development user account must have access to plugged in devices. To allow the development user access to the device via USB, create a new udev rule:

1. Run the following command in a shell:

   echo 'SUBSYSTEM=="usb", ATTRS{idVendor}=="18d1", TAG+="udev-acl", TAG+="uaccess"' | sudo tee -a /etc/udev/rules.d/70-boot2qt.rules

2. Connect the running device to the development host with a USB cable. If the device is already connected, disconnect and reconnect the USB cable after running the command above.

The system log files /var/log/udev and /var/log/syslog may provide relevant information in case of connection problems.

You can confirm that the connection is working by running the following command on Linux:

<INSTALL_DIR>/Tools/b2qt/adb devices -l

Or the following command on Windows:

<Android-SDK-Tools-install-dir>\platform-tools\adb.exe devices -l

The output should be a list of connected Boot to Qt (and Android) devices, identified with a serial number and a name. If your device is missing from the list, or the serial number is ??????, the connection is not working properly. Check that the device is powered on, and disconnect and reconnect the USB cable.

The emulator may be listed as well. Its serial number is its IP and the port number: 192.168.56.101:5555.

Configuring a Device Kit in Qt Creator

After you have prepared the hardware, you must perform one final step to set up the development tools in Qt Creator for your device. That is, you must configure the correct 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 for your device. For more information, see Building and Running an Example.