systemd services: midi-bridge, pd-synth-onboard, led-matrix-viz + install script

install.sh

@@ -1,27 +1,30 @@
 #!/bin/bash
-# install.sh — Install system dependencies on the Uno Q
-# Run this on the board: ssh arduino@uno-q.local 'bash -s' < install.sh
-
+# install-services.sh — Deploy systemd services to board
 set -euo pipefail
 
-echo "[INSTALL] Updating packages..."
-sudo apt update -qq
+REPO="/home/arduino/uno-q-audio-synth"
+SERVICES=(midi-bridge pd-synth-onboard led-matrix-viz)
 
-echo "[INSTALL] Installing Pure Data..."
-sudo apt install -y -qq puredata alsa-utils
+for svc in "${SERVICES[@]}"; do
+    sudo cp "$REPO/system/$svc.service" /etc/systemd/system/
+done
 
-echo "[INSTALL] Installing USB gadget config..."
-sudo cp system/configure-usb-audio.sh /usr/local/bin/
-sudo chmod +x /usr/local/bin/configure-usb-audio.sh
-sudo cp system/asound.conf /etc/asound.conf
+# Fix UCM bug (must survive OS updates)
+FILE=/usr/share/alsa/ucm2/codecs/qcom-lpass/rx-macro/HeadphoneEnableSeq.conf
+if grep -q "RX HPH Mode" "$FILE" 2>/dev/null; then
+    sudo sed -i '/RX HPH Mode/d' "$FILE"
+    echo "[OK] UCM HeadphoneEnableSeq patched"
+fi
 
-echo "[INSTALL] Installing systemd services..."
-sudo cp system/usb-gadget-audio.service /etc/systemd/system/
-sudo cp system/pd-synth.service /etc/systemd/system/
 sudo systemctl daemon-reload
 
-echo "[INSTALL] Enabling services..."
-sudo systemctl enable usb-gadget-audio
-sudo systemctl enable pd-synth
+# Stop/mask old conflicting services
+sudo systemctl stop pd-synth pd-synth-auto pd-synth-i2s 2>/dev/null || true
+sudo systemctl disable pd-synth pd-synth-auto pd-synth-i2s 2>/dev/null || true
+sudo systemctl mask pd-synth pd-synth-auto pd-synth-i2s 2>/dev/null || true
 
-echo "[INSTALL] Done. Reboot with: sudo reboot"
+for svc in "${SERVICES[@]}"; do
+    sudo systemctl enable "$svc"
+done
+
+echo "[OK] Services installed and enabled"

justfile

@@ -91,27 +91,46 @@ install:
     @ssh {{SSH_OPTS}} "{{BOARD_USER}}@{{BOARD_HOST}}" "\
         rm -rf {{REPO_DIR}} 2>/dev/null; \
         git clone {{REPO_URL}} {{REPO_DIR}} && \
-        echo '[OK] Repo cloned to {{REPO_DIR}}'"
-    @echo "[OK] Repo installed. Run: just deploy"
+        echo '[OK] Repo cloned' && \
+        chmod +x {{REPO_DIR}}/scripts/*.py {{REPO_DIR}}/scripts/*.sh && \
+        bash {{REPO_DIR}}/install.sh && \
+        echo '[OK] Services installed'"
+    @echo "[OK] Run: just deploy"
 
-# Deploy: push local commits + git pull on board
+# Deploy + reload services after git pull
 deploy:
     @git push origin HEAD 2>&1
     @ssh {{SSH_OPTS}} "{{BOARD_USER}}@{{BOARD_HOST}}" "\
-        cd {{REPO_DIR}} && git pull && echo '[OK] Deployed'"
+        cd {{REPO_DIR}} && git pull && \
+        chmod +x scripts/*.py scripts/*.sh 2>/dev/null; \
+        echo '{{BOARD_PASS}}' | sudo -S systemctl daemon-reload && \
+        echo '{{BOARD_PASS}}' | sudo -S systemctl restart midi-bridge pd-synth-onboard led-matrix-viz && \
+        echo '[OK] Deployed + restarted'"
 
 # Start synth (onboard audio)
 synth-onboard:
-    @ssh {{SSH_OPTS}} "{{BOARD_USER}}@{{BOARD_HOST}}" "\
-        sudo killall pd 2>/dev/null; sleep 0.5; \
-        echo '{{BOARD_PASS}}' | sudo -S sed -i '/RX HPH Mode/d' /usr/share/alsa/ucm2/codecs/qcom-lpass/rx-macro/HeadphoneEnableSeq.conf 2>/dev/null; \
-        nohup {{REPO_DIR}}/scripts/start-synth.sh --onboard > /tmp/synth.log 2>&1 & \
-        sleep 2; \
-        pgrep -x pd >/dev/null && echo '[OK] Synth running (onboard)' || echo '[FAIL] Check /tmp/synth.log'"
+    @ssh {{SSH_OPTS}} "{{BOARD_USER}}@{{BOARD_HOST}}" "sudo systemctl start pd-synth-onboard && echo '[OK] Synth started'"
 
 # Stop synth
 synth-stop:
-    @ssh {{SSH_OPTS}} "{{BOARD_USER}}@{{BOARD_HOST}}" "sudo killall pd 2>/dev/null; echo '[OK] Stopped'"
+    @ssh {{SSH_OPTS}} "{{BOARD_USER}}@{{BOARD_HOST}}" "sudo systemctl stop pd-synth-onboard && echo '[OK] Stopped'"
+
+# Restart all services
+synth-restart:
+    @ssh {{SSH_OPTS}} "{{BOARD_USER}}@{{BOARD_HOST}}" "\
+        sudo systemctl restart midi-bridge pd-synth-onboard led-matrix-viz && \
+        echo '[OK] All services restarted'"
+
+# Show service status
+status:
+    @ssh {{SSH_OPTS}} "{{BOARD_USER}}@{{BOARD_HOST}}" "\
+        echo '=== Pd ==='; pgrep -a pd | grep -v watchdog | grep -v kswapd || echo '(not running)'; \
+        echo '=== Services ==='; \
+        for svc in midi-bridge pd-synth-onboard led-matrix-viz; do \
+            echo -n \"  \$svc: \"; systemctl is-active \$svc 2>/dev/null || echo 'inactive'; \
+        done; \
+        echo '=== Audio ==='; cat /proc/asound/cards; \
+        echo '=== Git ==='; cd {{REPO_DIR}} && git log --oneline -1"
 
 # Enable midi-bridge service
 enable-midi-bridge:
@@ -165,13 +184,6 @@ diag-led:
 deploy-diag:
     @scp {{SSH_OPTS}} scripts/diag.sh "{{BOARD_USER}}@{{BOARD_HOST}}:{{SYSTEM_DIR}}/bin/diag.sh"
 
-# Show system status (quick)
-status:
-    @ssh {{SSH_OPTS}} "{{BOARD_USER}}@{{BOARD_HOST}}" "\
-        cd {{REPO_DIR}} && git log --oneline -1; \
-        echo '---'; pgrep -a pd 2>/dev/null || echo 'Pd: not running'; \
-        echo '---'; cat /proc/asound/cards"
-
 # Full deploy + restart synth
 cycle: deploy synth-stop synth-onboard
 

system/pd-synth-onboard.service

@@ -0,0 +1,19 @@
+[Unit]
+Description=Pure Data Synth (Onboard PMIC Audio)
+After=multi-user.target
+Wants=midi-bridge.service
+
+[Service]
+Type=simple
+User=arduino
+ExecStartPre=/bin/sh -c 'systemctl --user stop pipewire.socket pipewire.service wireplumber 2>/dev/null; sleep 0.5'
+ExecStart=/home/arduino/uno-q-audio-synth/scripts/start-synth.sh --onboard
+ExecStop=/usr/bin/killall pd
+WorkingDirectory=/home/arduino/uno-q-audio-synth
+Restart=on-failure
+RestartSec=3
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target