Files
david 8cd796e3dd Initial commit: Arduino Uno Q USB Audio Synth project
- USB gadget (UAC1 + MIDI) with boot persistence
- USB host mode with auto-detection
- Pure Data synth patch with ALSA + UDP netreceive MIDI input
- MIDI rawmidi-to-UDP bridge (midi-bridge.py)
- LED matrix visualization (led-matrix-viz.py via arduino-router RPC)
- MCU sketch for LED matrix control (Arduino_RouterBridge + ArduinoGraphics)
- Conftest/OPA Rego policy validation suite for .pd files
- gen_synth_pd.py: programmatic .pd file generator
- System services: midi-bridge, led-matrix-viz, pd-synth-auto, usb-role-detect
- Justfile with deploy, enable, diagnostic recipes
- Diagnostic script (diag.sh)
2026-06-22 22:46:36 -07:00

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# USB role change udev rule
# Triggers role re-detection when USB-C cable is plugged/unplugged
# or when USB devices are connected/disconnected in host mode.
#
# Install: sudo cp 99-usb-role.rules /etc/udev/rules.d/
# Reload: sudo udevadm control --reload-rules
# USB gadget/UDC events (dwc3 role changes)
ACTION=="change", SUBSYSTEM=="udc", RUN+="/usr/local/bin/on-usb-role-change.sh"
# USB device connect/disconnect (host mode)
ACTION=="add|remove", SUBSYSTEM=="usb", RUN+="/usr/local/bin/on-usb-role-change.sh"
# USB audio card (host mode audio interface)
ACTION=="add|remove", SUBSYSTEM=="sound", RUN+="/usr/local/bin/on-usb-role-change.sh"