tory-home / meta-mbed-edge

Bitbake meta-layer for Mbed Edge

meta-mbed-edge

This README file contains information on the contents of the meta-mbed-edge layer.

This meta-mbed-edge layer contains the Mbed Edge and Mbed Edge protocol translator example recipes.

This recipe does not contain dependecies to any BSP. For building Mbed Edge on Raspberry Pi 3 or Texas Instruments AM437x there exists separate BSP-layers. See the dependencies section of this README for further information.

To add the Mbed Edge to your build, insert following line to your local.conf:

IMAGE_INSTALL += " virtual/mbed-edge mbed-edge-examples "

The Mbed Edge CMake configuration can be injected with MBED_EDGE_CUSTOM_CMAKE_ARGUMENTS environment variable. The content of the variable is the CMake configuration line to inject. Please note that the MBED_EDGE_CUSTOM_CMAKE_ARGUMENTS needs to be listed in the BB_ENV_EXTRAWHITE environment, otherwise it will not have effect in the build.

Please consult the Mbed Edge repository how to configure the Mbed Edge build and check the recipes-connectivity/mbed-edge/files-folder for the configuration files.

If the protocol translator examples are installed image, please note that the bluetooth needs to be enabled and the firmware for the bluetooth chip needs to be installed. On the Raspberry Pi this can be done by adding following lines to the local.conf:

DISTRO_FEATURES_append += " bluetooth "

CORE_IMAGE_EXTRA_INSTALL += " linux-firmware-bcm43430 linux-firmware-bcm43430a1-hcd "

Dependencies

The Mbed Edge is currently tested on top of the sumo-version of the Yocto. The following repositories are required for the build:

poky

meta-openembedded

For Raspberry Pi 3 BSP and Mbed Cloud Client firmware update support:

meta-mbed-raspberrypi

For Texas Instruments AM437x BSP and Mbed Cloud Client firmware update support:

meta-mbed-am437x

Adding the meta-mbed-edge layer to your build

In order to use this layer, you need to make the build system aware of it.

Assuming the meta-mbed-edge layer exists at the top-level of your Yocto build tree, you can add it to the build system by adding the location of the meta-mbed-edge layer to bblayers.conf, along with any other layers needed. e.g.:

  BBLAYERS ?= " \
    /path/to/yocto/meta \
    /path/to/yocto/meta-poky \
    /path/to/yocto/meta-openembedded/meta-oe \
    /path/to/yocto/meta-raspberrypi \
    /path/to/yocto/meta-mbed-raspberrypi \
    /path/to/yocto/meta-mbed-edge \
    "

The BSP support for Raspberry Pi 3 is included in the example above.