linux 车机蓝牙调试命令

设备支持bluez5.62+PulseAudio

A2DP 连接命令 bluetoothctl

[bluetoothctl]
  power on/off  #蓝牙上电/下电
  agent NoInputNoOutput # 使用这种模式作为蓝牙sink可以无需介入直接连接
  system-alias 'QT-LINX1' #设置蓝牙别名
  discoverable on/off   #蓝牙可发现 开启/关闭
  info  #显示连接设备的信息
  pairable on/off #蓝牙可配对 开启/关闭
  connect  #连接设备
  disconnect #段连设备

bluetoothctl agent NoInputNoOutput 执行后, 一路输入yes:

[agent] Confirm passkey 193261 (yes/no): yes
Authorize service
[agent] Authorize service 00001108-0000-1000-8000-00805f9b34fb (yes/no): yes
Authorize service
[agent] Authorize service 0000110d-0000-1000-8000-00805f9b34fb (yes/no): yes

AVRCP（音频/视频遥控协议，Audio/Video-Remote-Control-Profile）

pactl list cards #列出声卡
Card #0
	Name: alsa_card.platform-rk809-sound
	Driver: module-alsa-card.c
	Owner Module: 6
	Properties:
		alsa.card = "0"
		alsa.card_name = "rockchip-rk809"
		alsa.long_card_name = "rockchip-rk809"
		device.bus_path = "platform-rk809-sound"
		sysfs.path = "/devices/platform/rk809-sound/sound/card0"
		device.string = "0"
		device.description = "rockchip-rk809"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card"
	Profiles:
		HiFi: Default (sinks: 1, sources: 1, priority: 8000, available: yes)
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
	Active Profile: HiFi
	Ports:
		[Out] Headphones: Headphones (type: Headphones, priority: 200, latency offset: 0 usec, availability unknown)
			Part of profile(s): HiFi
		[Out] Speaker: Speaker (type: Speaker, priority: 100, latency offset: 0 usec, availability unknown)
			Part of profile(s): HiFi
		[In] Headset: Headset Microphone (type: Headset, priority: 200, latency offset: 0 usec, availability unknown)
			Part of profile(s): HiFi
		[In] Mic: Internal Microphone (type: Mic, priority: 100, latency offset: 0 usec, availability unknown)
			Part of profile(s): HiFi

Card #8
	Name: bluez_card.04_D3_B5_B2_7E_40
	Driver: module-bluez5-device.c
	Owner Module: 36
	Properties:
		device.description = "linx1"
		device.string = "04:D3:B5:B2:7E:40"
		device.api = "bluez"
		device.class = "sound"
		device.bus = "bluetooth"
		device.form_factor = "phone"
		bluez.path = "/org/bluez/hci0/dev_04_D3_B5_B2_7E_40"
		bluez.class = "0x5a020c"
		bluez.alias = "linx1"
		device.icon_name = "audio-card-bluetooth"
	Profiles:
		headset_audio_gateway: Headset Audio Gateway (HSP/HFP) (sinks: 1, sources: 1, priority: 10, available: yes)
		a2dp_source: High Fidelity Capture (A2DP Source) (sinks: 0, sources: 1, priority: 20, available: yes)
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
	Active Profile: a2dp_source
	Ports:
		phone-output: Phone (type: Phone, priority: 0, latency offset: 0 usec, availability unknown)
			Part of profile(s): headset_audio_gateway
		phone-input: Phone (type: Phone, priority: 0, latency offset: 0 usec, available)
			Part of profile(s): headset_audio_gateway, a2dp_source

bluez.path = “/org/bluez/hci0/dev_04_D3_B5_B2_7E_40” 利用这个信息可以进行方法内省:

dbus-send --system --print-reply --dest=org.bluez /org/bluez/hci0/dev_04_D3_B5_B2_7E_40 org.freedesktop.DBus.Introspectable.Introspect

设备输出:

<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN""http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd"><node>
<interface name="org.freedesktop.DBus.Introspectable">
    <method name="Introspect">
        <arg name="xml" direction="out" type="s" />
    </method>
</interface>
<interface name="org.bluez.Device1">
    <method name="Disconnect"></method>
    <method name="Connect">