Raspberry Pi 3 Model B/B+

raspberry-pi
sumo
yocto
rocko

#1

Board description

The Raspberry Pi 3 Model B/B+ is a popular single board computer based on Broadcom SoCs. It is the most powerful board within the Raspberry Pi family and probably the most popular with “makers”.

770A5842-462x322

URL: https://www.raspberrypi.org/products/raspberry-pi-3-model-b-plus
URL: https://www.raspberrypi.org/products/raspberry-pi-3-model-b
Wiki: https://elinux.org/RPi_Hub

Test results

Raspberry Pi 3 is one of the official reference devices of Mender and is easy to get started with. This device is continuously tested as part of Mender testing pipelines which assures high quality of the integration.

The Yocto Project releases in the table below have been tested by the Mender community. Please update it if you have tested this integration on other Yocto Project releases:

Yocto Project Build Runtime
thud (2.6) :test_works: :test_works: 1
sumo (2.5) :test_works: :test_works:
rocko (2.4) :test_works: :test_works:

1. Disabled GRUB integration for ARM systems which is default in meta-mender/thud. U-boot is still primary integration method for this platform.

Build Means that the Yocto Project build using this Mender integration completes without errors and outputs images.
Runtime Means that Mender has been verified to work on the board. For U-Boot-based boards, the integration checklist has been verified.

Getting started

Prerequisites

  • A supported Linux distribution and dependencies installed on your workstation/laptop as described in the Yocto Mega Manual

    • NOTE. Instructions depend on which Yocto version you intend to use.
  • Google repo tool installed and in your PATH.

Configuring the build

Setup Yocto environment

Set the Yocto Project branch you are building for:

# set to your branch, make sure it is supported (see table above)
export BRANCH="thud"  

Create a directory for your mender-raspberrypi setup to live in and clone the
meta information.

mkdir mender-raspberrypi && cd mender-raspberrypi

Initialize repo manifest:

repo init -u https://github.com/mendersoftware/meta-mender-community \
           -m meta-mender-raspberrypi/scripts/manifest-raspberrypi.xml \
           -b ${BRANCH}

Fetch layers in manifest:

repo sync

Setup build environment

Initialize the build environment:

source setup-environment raspberrypi

Configure Mender server URL (optional)

This section is not required for a successful build but images that are generated by default are only suitable for usage with the Mender client in Standalone deployments, due to lack of server configuration.

You can edit the conf/local.conf file to provide your Mender server configuration, ensuring the generated images and Mender Artifacts are connecting to the Mender server that you are using. There should already be a commented section in the generated conf/local.conf file and you can simply uncomment the relevant configuration options and assign appropriate values to them.

Build for Hosted Mender:

# To get your tenant token:
#    - log in to https://hosted.mender.io
#    - click your email at the top right and then "My organization"
#    - press the "COPY TO CLIPBOARD"
#    - assign content of clipboard to MENDER_TENANT_TOKEN
#
MENDER_SERVER_URL = "https://hosted.mender.io"
MENDER_TENANT_TOKEN = "<copy token here>"

Build for Mender demo server:

# https://docs.mender.io/getting-started/create-a-test-environment
#
# Update IP address to match the machine running the Mender demo server
MENDER_DEMO_HOST_IP_ADDRESS = "192.168.0.100"

Building the image

You can now proceed with building an image:

MACHINE=raspberrypi3 bitbake core-image-base

Replace core-image-base with your desired image target.

Using the build output

After a successful build, the images and build artifacts are:

  • tmp/deploy/images/raspberrypi3/core-image-base-raspberrypi3.sdimg
  • tmp/deploy/images/raspberrypi3/core-image-base-raspberrypi3.mender

The disk image (with .sdimg suffix) is used to provision the device storage for devices without Mender running already. Please proceed to the official documentation on provisioning a new device for steps to do this.

On the other hand, if you already have Mender running on your device and want to deploy a rootfs update using this build, you should use the Mender Artifact files, which have .mender suffix. You can either deploy this Artifact in managed mode with the Mender server as described in Deploy to physical devices or by using the Mender client only in Standalone deployments.

References

  • The template files that are used by this setup can be found in mender-mender-community

  • The Mender integration layer for Raspberry Pi boards can be found in meta-mender.

  • The official Mender documentation explains how Mender works. This is simply a board-specific complement to the official documentation.

Known issues

No known issues.


Yocto Thud release and Mender