bluetooth

Dockerfile.agnos

@@ -210,6 +210,9 @@ COPY ./userspace/files/avahi-override.conf /etc/systemd/system/avahi-daemon.serv
 # Prevent polkitd memory leak from getting out of hand by restarting it every ~day
 COPY ./userspace/files/polkit-override.conf /etc/systemd/system/polkit.service.d/override.conf
 
+# Ensure bluetoothd starts after BT HCI is initialized
+COPY ./userspace/files/bluetooth-override.conf /etc/systemd/system/bluetooth.service.d/override.conf
+
 # Remove qt network bearer plugins
 RUN rm -rf /usr/lib/aarch64-linux-gnu/qt5/plugins/bearer
 

userspace/files/bluetooth-override.conf

@@ -0,0 +1,3 @@
+[Unit]
+After=bt-hci.service
+Requires=bt-hci.service

userspace/files/bt-hci.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Bluetooth HCI
+After=init-qcom.service
+Before=bluetooth.service
+
+[Service]
+Type=forking
+ExecStart=/usr/comma/bt_init.sh
+ExecStop=/usr/bin/killall hciattach
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target

userspace/install_extras.sh

@@ -4,12 +4,14 @@
 
 apt-fast update && apt-fast install -y --no-install-recommends \
   bash-completion \
+  bluez \
   btop \
   hyperfine \
   iperf \
   iperf3 \
   dnsmasq \
   irqtop \
+  rfkill \
   ripgrep \
   ncdu \
   nfs-common \

userspace/services.sh

@@ -14,6 +14,7 @@ systemctl enable agnos-debug.service
 systemctl enable gpio.service
 systemctl enable lte.service
 systemctl enable sound.service
+systemctl enable bt-hci.service
 systemctl enable magic.service
 systemctl enable init-qcom.service
 systemctl enable varwatch.service

userspace/usr/comma/bt_init.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+# Initialize WCN3990 Bluetooth adapter on comma four
+
+set -e
+
+# Kill any stale hciattach
+killall hciattach 2>/dev/null || true
+sleep 1
+
+# Power cycle BT chip via btpower ioctl (off then on)
+python3 -c "import fcntl,os; fd=os.open('/dev/btpower',os.O_RDWR); fcntl.ioctl(fd,0xbfad,0); os.close(fd)" 2>/dev/null || true
+sleep 2
+python3 -c "import fcntl,os; fd=os.open('/dev/btpower',os.O_RDWR); fcntl.ioctl(fd,0xbfad,1); os.close(fd)"
+sleep 3
+
+# Unblock bluetooth
+rfkill unblock bluetooth
+sleep 1
+
+# Attach UART — forks a daemon child that maintains hci0
+hciattach -s 115200 /dev/ttyHS1 qualcomm 115200 flow
+
+# Wait for hci0 to appear (hciattach daemon initializes async)
+for i in $(seq 1 10); do
+  hciconfig hci0 up 2>/dev/null && break
+  sleep 1
+done

userspace/uv/pyproject.toml

@@ -10,6 +10,8 @@ dependencies = [
 
   # hardware.py
   "dbus-python",
+  # glowd BLE
+  "bleak",
   # amplifier.py
   "smbus2",