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问题[bluez](unix)

Martin Hope
kimaNO
Asked: 2022-04-24 05:20:06 +0800 CST
  • 0

我正在尝试了解蓝牙堆栈。在许多博客中，他们提到了一个名为bccmd的工具。但是当我下载包bluez并编译它时，我没有找到它。它似乎在工具文件夹中。有人能告诉我这个包或其他包中是否有替代品吗？

utilities bluez
Martin Hope
VL-80
Asked: 2022-03-10 12:41:38 +0800 CST
  • 1

根据 Bluez API 文档（设备 API），该Connect()方法的返回表示一个或多个配置文件的成功连接：

无效连接（）

（跳过）

如果成功连接了至少一个配置文件，则此方法将指示成功。

同时还有一个Connected属性，描述为：

布尔连接 [只读]

指示远程设备当前是否已连接。PropertiesChanged 信号指示此状态的更改。

在实践中，方法的返回和通知属性设置Connect()的信号的到达似乎相隔几秒钟。PropertiesChangedConnectedtrue

运行 bluetoothctl 时：

[bluetooth]# connect XX:XX:XX:XX:XX:XX
Attempting to connect to XX:XX:XX:XX:XX:XX
[CHG] Device XX:XX:XX:XX:XX:XX Connected: yes
Connection successful

在 D-Bus 上捕获了以下消息：

方法调用时间=1646854334.904791 发件人=:1.521 -> 目的地=org.bluez 串行=50 路径=/org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX；接口=org.bluez.Device1；成员=连接
信号时间=1646854336.902736 发件人=：1.128 -> 目的地=（空目的地）串行=10521 路径=/org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX；接口=org.freedesktop.DBus.Properties；成员=属性已更改
   字符串“org.bluez.Device1”
   大批 [
      字典条目（
         字符串“已连接”
         变体布尔真
      )
   ]
   大批 [
   ]

方法返回时间=1646854339.349113 发件人=:1.128 -> 目的地=:1.521 串行=10522 回复串行=50

这告诉我们：

  • 当属性更改为信号所报告的 ( )[CHG] Device XX:XX:XX:XX:XX:XX Connected: yes时，屏幕上会出现。Connectedtruetime=1646854336.902736
  • 当方法返回 ( ) 时会出现该Connection successful消息。Connect()time=1646854339.349113
  • 这些事件相隔 2.4 秒发生。

问题是这两个事件之间有什么区别，哪一个实际上表示蓝牙设备已连接？

（断开设备连接时，Disconnect()方法返回和信号到达0.003相隔数秒）。

环境：Linux内核：5.4-179，Bluez：5.62-r3，Systemd 249.9：。

bluetooth bluez
Martin Hope
Andrew Virya Victorio
Asked: 2021-11-06 18:27:30 +0800 CST
  • 9

我用 Windows11 做双引导 Kali-Linux。所以问题是我想连接我的蓝牙扬声器（JBL GO），但不幸的是我无法连接。我使用 GUI 和 CLI 连接到我的扬声器。它以前工作得很好。我可以在 Windows 中连接，但不能在我的 Kali 中连接。

这是使用 GUI 的消息： 图形用户界面

这是使用 CLI 的消息：

$ bluetoothctl                                                                                  
Agent registered
[bluetooth]# agent KeyboardOnly
Agent is already registered
[bluetooth]# default-agent 
Default agent request successful
[bluetooth]# power on
Changing power on succeeded
[bluetooth]# scan on
Discovery started
[CHG] Controller 00:1A:7D:DA:71:15 Discovering: yes
[CHG] Device 30:C0:1B:95:1D:C3 RSSI: -51
[CHG] Device 30:C0:1B:95:1D:C3 TxPower: 0
[bluetooth]# remove 30:C0:1B:95:1D:C3
[DEL] Device 30:C0:1B:95:1D:C3 JBL GO
Device has been removed
[NEW] Device 30:C0:1B:95:1D:C3 JBL GO
[CHG] Device 30:C0:1B:95:1D:C3 TxPower: 0
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 00001108-0000-1000-8000-00805f9b34fb
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 0000110d-0000-1000-8000-00805f9b34fb
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[bluetooth]# trust 30:C0:1B:95:1D:C3
[CHG] Device 30:C0:1B:95:1D:C3 Trusted: yes
Changing 30:C0:1B:95:1D:C3 trust succeeded
[bluetooth]# pair 30:C0:1B:95:1D:C3
Attempting to pair with 30:C0:1B:95:1D:C3
[CHG] Device 30:C0:1B:95:1D:C3 Connected: yes
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 00001101-0000-1000-8000-00805f9b34fb
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 00001108-0000-1000-8000-00805f9b34fb
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 0000110c-0000-1000-8000-00805f9b34fb
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device 30:C0:1B:95:1D:C3 UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
[CHG] Device 30:C0:1B:95:1D:C3 ServicesResolved: yes
[CHG] Device 30:C0:1B:95:1D:C3 Paired: yes
Pairing successful
[CHG] Device 30:C0:1B:95:1D:C3 ServicesResolved: no
[CHG] Device 30:C0:1B:95:1D:C3 Connected: no
[bluetooth]# connect 30:C0:1B:95:1D:C3
Attempting to connect to 30:C0:1B:95:1D:C3
Failed to connect: org.bluez.Error.Failed
[bluetooth]# exit

我检查了蓝牙服务：

$ sudo systemctl status bluetooth
● bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; disabled; vendor preset: disabled)
     Active: active (running) since Sat 2021-11-06 08:32:21 WIB; 47min ago
       Docs: man:bluetoothd(8)
   Main PID: 3844 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 38347)
     Memory: 2.0M
        CPU: 439ms
     CGroup: /system.slice/bluetooth.service
             └─3844 /usr/libexec/bluetooth/bluetoothd

Nov 06 09:12:21 [hostname] bluetoothd[3844]: Endpoint registered: sender=:1.87 path=/MediaEndpoint/A2DPSink/sbc
Nov 06 09:12:21 [hostname] bluetoothd[3844]: Endpoint registered: sender=:1.87 path=/MediaEndpoint/A2DPSource/sbc
Nov 06 09:12:21 [hostname] bluetoothd[3844]: Endpoint registered: sender=:1.87 path=/MediaEndpoint/A2DPSink/sbc_xq_453
Nov 06 09:12:21 [hostname] bluetoothd[3844]: Endpoint registered: sender=:1.87 path=/MediaEndpoint/A2DPSource/sbc_xq_453
Nov 06 09:12:21 [hostname] bluetoothd[3844]: Endpoint registered: sender=:1.87 path=/MediaEndpoint/A2DPSink/sbc_xq_512
Nov 06 09:12:21 [hostname] bluetoothd[3844]: Endpoint registered: sender=:1.87 path=/MediaEndpoint/A2DPSource/sbc_xq_512
Nov 06 09:12:21 [hostname] bluetoothd[3844]: Endpoint registered: sender=:1.87 path=/MediaEndpoint/A2DPSink/sbc_xq_552
Nov 06 09:12:21 [hostname] bluetoothd[3844]: Endpoint registered: sender=:1.87 path=/MediaEndpoint/A2DPSource/sbc_xq_552
Nov 06 09:12:30 [hostname] bluetoothd[3844]: /org/bluez/hci0/dev_30_C0_1B_95_1D_C3/sep1/fd0: fd(42) ready
Nov 06 09:12:30 [hostname] bluetoothd[3844]: profiles/audio/avctp.c:avctp_connect_browsing_cb() Browsing: connect to 30:C0:1B:95:1D:C3: Connection refused (111)

我已经尝试过了rfkill，alsa但没有结果。但是当我尝试这些命令时：

$ pulseaudio -k
$ pulseaudio -D
$ pulseaudio --start

， 有用。但我无法在pavucontrol. 现在我被困住了：| 图形用户界面连接

这是我的 Kali 版本：

$ uname -a
Linux [my_hostname] 5.14.0-kali2-amd64 #1 SMP Debian 5.14.9-2kali1 (2021-10-04) x86_64 GNU/Linux

蓝牙版本：bluetoothctl: 5.61

蓝人版：2.2.2-1

bluetooth bluez
Martin Hope
user351890
Asked: 2019-05-08 22:47:31 +0800 CST
  • 0

要将 PC 连接到手机的 PAN，我按照以下步骤操作

  1. 已将手机与 PC 配对
  2. 打开手机中的 BT 网络共享
  3. 从 PC 使用 nmcli 或从连接（GUI）连接它

我的疑问是，如果我这样连接，它是使用 BT-PAN 配置文件还是其他一些配置文件？

（我发现有人使用 BT-PAN 脚本，为什么他们不能简单地使用这种方法？）

bluetooth bluez