Zephyr App

Zephyr application created using West and using T2 topology.

Homework task 2

Create workspace

1. Update SO

    sudo apt update
    sudo apt upgrade

2. Install West

    pip install west # Reset console

4. Initialize Workspace

    west init -m https://github.com/zephyrproject-rtos/zephyr.git --mr v3.6.0 . # For raw workspace that include all modules.
    west init -l # For custom west.yml file 

5. Update West

    west update # Install all modules presents in Zephyr/west.yml or west.yml custom file.

7. IMPORTANT: Install nrf command line tools to include j-link segger

    wget https://nsscprodmedia.blob.core.windows.net/prod/software-and-other-downloads/desktop-software/nrf-command-line-tools/sw/versions-10-x-x/10-24-2/nrf-command-line-tools_10.24.2_amd64.deb
    sudo dpkg -i nrf-command-line-tools_10.24.2_amd64.deb
    sudo apt install /opt/nrf-command-line-tools/share/JLink_Linux_V794e_x86_64.deb --fix-broken

9. obtain the corresponding completion script and have it sourced to enable shell completion. Using the completion scripts:

    west completion bash > ~/west-completion.bash; echo "source ~/west-completion.bash" >> ~/.bashrc

10. Export a Zephyr CMake package. This allows CMake to automatically load boilerplate code required for building Zephyr applications.

    west zephyr-export

12. Zephyr’s scripts/requirements.txt file declares additional Python dependencies. Install them with pip. pip install -r ~/zephyrproject/zephyr/scripts/requirements.txt
13. Download and verify the Zephyr SDK bundle:

    cd ~
    wget https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v0.17.0/zephyr-sdk-0.17.0_linux-x86_64.tar.xz
    O ->  wget https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v0.16.9/zephyr-sdk-0.16.9_linux-x86_64.tar.xz
    wget -O - https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v0.17.0/sha256.sum | shasum --check --ignore-missing
    O -> wget -O - https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v0.16.9/sha256.sum | shasum --check --ignore-missing

15. Extract the Zephyr SDK bundle archive:

    tar xvf zephyr-sdk-0.17.0_linux-x86_64.tar.xz
    O -> tar xvf zephyr-sdk-0.16.9_linux-x86_64.tar.xz

16. Run the Zephyr SDK bundle setup script:

    cd zephyr-sdk-0.17.0
    ./setup.sh
    # You only need to run the setup script once after extracting the Zephyr SDK bundle.
    # You must rerun the setup script if you relocate the Zephyr SDK bundle directory after the initial setup.

17. Install udev rules, which allow you to flash most Zephyr boards as a regular user:

    sudo cp ~/zephyr-sdk-0.17.0/sysroots/x86_64-pokysdk-linux/usr/share/openocd/contrib/60-openocd.rules /etc/udev/rules.d
    sudo udevadm control --reload

18. Configure zephyr ariables:

export ZEPHYR_SDK_INSTALL_DIR=/opt/zephyr-sdk/zephyr-sdk-0.16.9
export ZEPHYR_TOOLCHAIN_VARIANT=zephyr

Connecting USB devices - WSL:

usbipd list
usbipd bind --busid 1-2
usbipd attach --wsl --busid 1-2
usbipd detach --busid 1-2

Homework task 3

T2 Topologie:

zephyrworkspace/
├─zephyrproject
│    ├─ CMakeLists.txt
│    ├─ west.yml
│    ├─ prj.conf
│    ├─ src/
│    │  ├─ main.c

Homework task 4

Switch between Zephyr versions

Select zephy v3.6.0

export ZEPHYR_BASE=~/zephyrworkspace/zephyr

Select zephy v3.7.0

export ZEPHYR_BASE=~zephyr-project/zephyr-v3.7.0

Homework task 5

Steps

1. First enable and modify the options you want using menu/guiconfig

west build -b native_posix_64 --build-dir build -t menuconfig

2. Then a backup file will be automatically created in build/zephyr/.config.old

zephyrworkspace/
├─zephyrproject
│    ├─ CMakeLists.txt
│    ├─ build
│    │  ├─ zephyr
│    │  │    ├─ .config
│    │  │    ├─ .config.old
│    ├─ west.yml
│    ├─ prj.conf
│    ├─ src/
│    │  ├─ main.c

3. Comapare both files using:

diff --changed-group-format='%>' --unchanged-group-format='' .config .config.old > mydiff.conf # this command compare .config .config.old and then save the differences between files in mydiff.confi