This snap runs a service that listens for HTTP requests and triggers a safe system shutdown on the Built-in Computer of Husarion Panther and Lynx UGV.
Parameters
The snap provides the following configurable parameters (param name: default value):
config.user-computer-ip: 10.15.20.3 - IP of the User's Computerconfig.remote-host-ip: 10.15.20.2 - IP of the Built-in Computerconfig.port: 3003 - Port of the Built-in Computer where the server is runningconfig.shutdown-delay: 0 - Shutdown delay in secondsconfig.password: husarion - Shared HMAC secret known to both the User's Computer and the Built-in ComputerTo set parameters, use the snap set command, e.g.,
sudo snap set husarion-shutdown config.user-computer-ip="10.5.10.81" config.remote-host-ip="10.5.10.81" config.shutdown-delay=20 config.password="husarion2"
Example HTTP Request Script
Example of the script that uses the service to trigger the safe system shutdown
can be found here: /var/snap/husarion-shutdown/common/request_example.sh
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
On Debian 9 (Stretch) and newer, snap can be installed directly from the command line:
sudo apt update
sudo apt install snapd
After this, install the snapd snap in order to get the latest snapd:
sudo snap install snapd
To install husarion-shutdown, simply use the following command:
sudo snap install husarion-shutdown
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