This is a small Ubuntu Snap to use as a template/demo.
The snap contains a small Python app which simulates a temperature sensor via MQTT. Currently the Snap configuration snap/snapcraft.yaml is prepared for using the Snap on Ubuntu Core (arm64), which can be easily changed into another architecture.
Here you can find more information about creating/building Snaps with Snapcraft: https://snapcraft.io/docs/snapcraft-overview
The snap can be build on a normal Ubuntu distribution. Install snapcraft:
$ snap install snapcraft --classic
snapcraft 7.2.9 van Canonical✓ installed
Get the Snap Temperature Sensor from the Gitlab repository:
$ git@git.etb.tieto.com:ConsumerElectronics/matter.git
$ cd snap-temp-sensor
To generate the snap file for arm64, execute this command. This will cross-compile the snap for the platform specified in the snap/snapcraft.yaml
$ snapcraft remote-build
Now open a SFTP connection via SSH and copy the temp-sensor_0.1dev_arm64.snap file to the Ubuntu Core device.
Open a SSH terminal to the Ubuntu Core device and install the generated Snap file:
$ snap install temp-sensor_0.1dev_arm64.snap --devmode
This is the command to run the temperature sensor simulation via MQTT (you can press Ctrl-C to stop the simulation):
$ temp-sensor