Install script as systemd service
Depending on the distro there are various options to configure scripts as service. On newer distros Raspberry Pi runs systemd, we will use that.
cd /home/pi/src/prusa-connect-camera-script
sudo cp -f prusa-connect-camera@.service /etc/systemd/system/prusa-connect-camera@.service
sudo systemctl daemon-reload
Configuring single camera
Assuming that /home/pi/src/prusa-connect-camera-script/.env file was created in
previous steps, we use that .env file as example camera config.
Notice there is no dot before env in the commands below!
sudo systemctl enable prusa-connect-camera@env.service
sudo systemctl start prusa-connect-camera@env.service
sudo systemctl status prusa-connect-camera@env.service
Above commands will enable given service on device restart (reboot), start the service and show current status.
Configure multiple cameras
This project allows spawning multiple systemd units.
The suffix after @ defines what env file to load from given path.
For example if you set unit file name to prusa-connect-camera@csi.service
then systemd will load env vars from the file under path
/home/pi/src/prusa-connect-camera-script/.csi
So in short:
- copy
csi.distas.csiand edit it - copy
prusa-connect-camera@.serviceasprusa-connect-camera@csi.service - you may additionally edit unit file if you use different config paths
- run systemctl daemon-reload
- enable systemd service
- start systemd service
cd /home/pi/src/prusa-connect-camera-script/
cp csi.dist .csi
# edit .csi and set custom command params, token and fingerprint etc...
sudo systemctl enable prusa-connect-camera@csi.service
sudo systemctl start prusa-connect-camera@csi.service
sudo systemctl status prusa-connect-camera@csi.service
For another camera, let say for another camera attached over USB
cd /home/pi/src/prusa-connect-camera-script/
cp usb.dist .usb1
# edit .usb1 and set device, token and fingerprint etc...
sudo systemctl enable prusa-connect-camera@usb1.service
sudo systemctl start prusa-connect-camera@usb1.service
sudo systemctl status prusa-connect-camera@usb1.service
For esphome camera, for static images:
cd /home/pi/src/prusa-connect-camera-script/
cp esphome-snapshot.dist .esphome1
# edit .esphome1 and set device, token and fingerprint etc...
sudo systemctl enable prusa-connect-camera@esphome1.service
sudo systemctl start prusa-connect-camera@esphome1.service
sudo systemctl status prusa-connect-camera@esphome1.service
I hope you get the idea...
Uninstall systemd service
Just run two commands per camera (where csi is a camera config):
sudo systemctl stop prusa-connect-camera@csi.service
sudo systemctl disable prusa-connect-camera@csi.service
After removing all cameras remove systemd service definition and reload daemon: