Files
LEDMatrix/systemd
Chuck e8afd23c98 fix(wifi): create truly open AP via nmcli connection add; add captive portal to nmcli path
nmcli device wifi hotspot always attaches a WPA2 PSK on Bookworm/Trixie
and silently ignores post-creation security modifications, causing users
to be prompted for an unknown password. Switch to nmcli connection add
with 802-11-wireless.mode ap and no security section — NM cannot auto-add
a password to a profile that has no 802-11-wireless-security block.

Also:
- Remove dead DEFAULT_AP_PASSWORD / ap_password config field (stored but
  never passed to hostapd or nmcli, causing user confusion)
- Add iptables port 80→5000 redirect to the nmcli AP path so captive portal
  auto-popup works on phones without hostapd (previously only worked on
  the hostapd path)
- Clean up iptables rules on disable for the nmcli path
- Improve LED message on AP enable: show SSID, "No password", and IP:port
  on both paths so users know exactly how to connect
- Fix systemd template: replace hardcoded /home/ledpi/LEDMatrix/ with
  __PROJECT_ROOT_DIR__ placeholder (install script already writes correct path)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-30 18:33:53 -04:00
..
2025-12-27 14:15:49 -05:00

Systemd Service Files

This directory contains systemd service unit files for LEDMatrix services.

Service Files

  • ledmatrix.service - Main LED Matrix display service

    • Runs the display controller (run.py)
    • Starts automatically on boot
    • Runs as root for hardware access
  • ledmatrix-web.service - Web interface service

    • Runs the web interface conditionally based on config
    • Starts automatically on boot if web_display_autostart is enabled
    • Uses scripts/utils/start_web_conditionally.py
  • ledmatrix-wifi-monitor.service - WiFi monitor daemon service

    • Monitors WiFi/Ethernet connectivity
    • Automatically enables/disables access point mode
    • Uses scripts/utils/wifi_monitor_daemon.py

Installation

These service files are installed by the installation scripts in scripts/install/:

  • install_service.sh installs ledmatrix.service
  • install_web_service.sh installs ledmatrix-web.service
  • install_wifi_monitor.sh installs ledmatrix-wifi-monitor.service

Manual Installation

Important: the unit files in this directory contain __PROJECT_ROOT_DIR__ placeholders that the install scripts replace with the actual project directory at install time. Do not copy them directly to /etc/systemd/system/ — the service will fail to start with WorkingDirectory=__PROJECT_ROOT_DIR__ errors.

Always install via the helper script:

sudo ./scripts/install/install_service.sh

If you really need to do it by hand, substitute the placeholder first:

PROJECT_ROOT="$(pwd)"
sed "s|__PROJECT_ROOT_DIR__|$PROJECT_ROOT|g" systemd/ledmatrix.service \
  | sudo tee /etc/systemd/system/ledmatrix.service > /dev/null
sudo systemctl daemon-reload
sudo systemctl enable ledmatrix.service
sudo systemctl start ledmatrix.service

Service Management

# Check status
sudo systemctl status ledmatrix.service

# Start/stop/restart
sudo systemctl start ledmatrix.service
sudo systemctl stop ledmatrix.service
sudo systemctl restart ledmatrix.service

# Enable/disable autostart
sudo systemctl enable ledmatrix.service
sudo systemctl disable ledmatrix.service

# View logs
journalctl -u ledmatrix.service -f