Advanced Command Line Usage¶
This article will go over some advanced command line usage that will help you configure PhotonVision on a Linux coprocessor such as the Raspberry Pi. For ease of use, it is highly recommended to use the Pi image or install script.
Running a JAR File¶
java has been installed, and the appropriate environment variables have been set upon installation (a package manager like
apt should automatically set these), you can use
java -jar to run a JAR file. If you downloaded the latest stable JAR of PhotonVision from the GitHub releases page, you can run the following to start the program:
java -jar /path/to/photonvision/photonvision.jar
Updating a JAR File¶
When you need to update your JAR file, run the following:
wget https://git.io/JqkQ9 -O update.sh sudo chmod +x update.sh sudo ./update.sh sudo reboot now
You can also create a systemd service that will automatically run on startup. To do so, first navigate to
/lib/systemd/system. Create a file called
photonvision.service (or name it whatever you want) using
touch photonvision.service. Then open this file in the editor of your choice and paste the following text:
[Unit] Description=Service that runs PhotonVision [Service] WorkingDirectory=/path/to/photonvision ExecStart=/usr/bin/java -jar /path/to/photonvision/photonvision.jar [Install] WantedBy=multi-user.target
Then copy the
.service file to
cp photonvision.service /etc/systemd/system/photonvision.service. Then modify the file to have
644 permissions using
chmod 644 /etc/systemd/system/photonvision.service.
To install the service, simply run
systemctl enable photonvision.service.
It is recommended to reload configurations by running