meta-awsota-raspberrypi

This Yocto meta layer contains necessary recipes for integrate AWS IoT, Mender and Raspberry Pi 4 Model B for full system updates.

Usage

In order to start building own Yocto images you need setup local environment

git clone --recursive [email protected]:vitalibo/meta-awsota-raspberrypi.git
vagrant up

After clone sources and setup VM, you can login to VM using following command:

vagrant ssh

Inside VM, you can perform following command to build images (also, available core-image-minimal, core-image-base, etc).

vagrant@ubuntu-bionic:$ bitbake core-image-full-cmdline

Now you can create a package feed, for this you need to update repo package indexes.

vagrant@ubuntu-bionic:$ bitbake package-index

After successful build setup HTTP server to browse build artifacts. Server by default accessible on http://192.168.0.33:8000 address.

vagrant@ubuntu-bionic:$ python3 -m http.server

Interesting for us are the two files:

• tmp/deploy/images/raspberrypi4/core-image-full-cmdline-raspberrypi4.sdimg
• tmp/deploy/images/raspberrypi4/core-image-full-cmdline-raspberrypi4.mender

The first one (with .sdimg suffix) is disk image that need to use for initial provision a new device (see official instruction). Follow this instruction copying an operating system image to an SD card using Mac OS.

diskutil unmountDisk /dev/diskN     # replace N with SD card device number
sudo dd bs=1m if=core-image-full-cmdline-raspberrypi4.sdimg of=/dev/rdiskN; sync

Download your GreenGrass Core security resources and configuration file and put it to SD card.

mkdir -p /Volumes/boot/greengrass/
tar -xf xxxxxxxxxx-setup.tar.gz -C /Volumes/boot/greengrass/

Another (with .mender suffix) can be used for OTA updates. This command should perform on a device.

pi@rpi4:$ mender -install http://192.168.0.33:8000/tmp/deploy/images/raspberrypi4/core-image-full-cmdline-raspberrypi4.mender

Then reboot device and wait to starting from new partition. Now, you can commit or rollback changes.

pi@rpi4:$ mender -commit # or -rollback

To destroy VM use:

vagrant destroy

AWS IoT Device Tester for AWS IoT Greengrass

========== Test Summary ==========
Execution Time: 	9m46s
Tests Completed: 	20
Tests Passed: 		19
Tests Failed: 		1
Tests Skipped: 		0
----------------------------------
Test Groups:
    mqtt:                             PASSED
    ota:                              PASSED
    deployment:                       PASSED
    version:                          PASSED
    ggcdependencies:                  PASSED
Optional Test Groups:
    containerdependencies:            PASSED
    dockerdependencies:               FAILED
    ggcstreammanagementdependencies:  PASSED
    deploymentcontainer:              PASSED
----------------------------------
Failed Tests:
    Group Name: dockerdependencies
        Test Name: Test Docker Python Version docker_python_version
            Reason: [Error: 126] DependenciesNotPresentError: The following dependencies do not exist: Python 3.7 was not found. Please make sure Python 3.7 is installed and can be ran from the python3.7 command. Details: Failed to run 'python3.7 --version' command: command exited unsuccessfully: Command 'python3.7 --version' exited with code 127. Error output: sh: python3.7: command not found

Resources

• AWS IoT Jobs and Mender integration Demo