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[BlueZ] 2、使用bluetoothctl找出、连接、配对、读写

发布时间:2019-11-12 15:39编辑:威尼斯官方网站浏览(54)

    星期三, 05. 九月 2018 02:03上午 - beautifulzzzz

    图片 1

    1、前言

    上生龙活虎篇讲了哪些编译安装BlueZ-5,本篇主要在于玩BlueZ,用命令行去操作BLE设备:

    • [BlueZ] 1、Download install and use the BlueZ and hcitool on PI 3B+

    图片 2

    2、gatttool —— 老工具趟坑

    刚初步接着 Get Started with Bluetooth Low Energy on Linux 操作gatttool,开掘坑太多(主要原因是工具老了卡塔尔国:

    采用sudo gatttool -b 4D:69:98:0E:91:5E -I去连接
    察觉会报错:Error: connect error: Connection refused (111)
    末了参谋LINK-11开采须求加random选项([#1](https://stackoverflow.com/questions/32947807/cannot-connect-to-ble-device-on-raspberry-pi))

    ➜  ~  sudo gatttool -b 4D:69:98:0E:91:5E -I
    [4D:69:98:0E:91:5E][LE]> connect
    Attempting to connect to 4D:69:98:0E:91:5E
    Error: connect error: Connection refused (111)
    [4D:69:98:0E:91:5E][LE]> exit
    ➜  ~  sudo gatttool  -t random  -b 4D:69:98:0E:91:5E -I
    [4D:69:98:0E:91:5E][LE]> connect
    Attempting to connect to 4D:69:98:0E:91:5E
    Connection successful
    [4D:69:98:0E:91:5E][LE]> 
    (gatttool:3104): GLib-WARNING **: Invalid file descriptor.
    

    过叁遍会10S机动断开,英特网说这一个工具老了,不建议用了([#2](https://www.spinics.net/lists/linux-bluetooth/msg67617.html)):

    There are new tools to use with GATT, bluetoothctl/bluetoothd is the preferred since with that you have GAP, etc, 
    but if want to use a stand alone tool then I suggest you use btgatt-client.
    

    图片 3

    3、bluetoothctl——NB的新工具

    一声令下行步入bluetoothctl操作境况([#6](https://mcuoneclipse.com/2016/12/19/tutorial-ble-pairing-the-raspberry-pi-3-model-b-with-hexiwear/))

    bluetoothctl
    

    自家在手提式有线电话机上用lightblue模拟一个BLE设备ty_prod,之后对其service进行改进,调用scan on进行检索照旧老的,
    末段发掘要先用remove移除从前的道具,之后再scan就能现出[NEW] Device 72:3B:E1:81:4E:4F ty_prod设备
    注: 用lightblue模拟的设施的MAC不是定位的
    注: 小编发以后lightblue中不管怎么模拟BLE设备,生机勃勃旦被连上搜索到的service都是IPone的

    [bluetooth]# devices
    Device 28:ED:6A:A0:26:B7 ty_prod
    Device 58:71:33:00:00:24 Bluetooth Keyboard
    Device 00:1A:7D:DA:71:0A SHEN-PC
    Device 94:87:E0:B3:AC:6F Mi Phone
    [bluetooth]# remove 28:ED:6A:A0:26:B7 
    ...
    [bluetooth]# scan on
    Discovery started
    [NEW] Device 72:3B:E1:81:4E:4F ty_prod
    [bluetooth]# scan off
    ...
    Discovery stopped
    [bluetooth]# connect 72:3B:E1:81:4E:4F
    Attempting to connect to 72:3B:E1:81:4E:4F
    [CHG] Device 72:3B:E1:81:4E:4F Connected: yes
    Connection successful
    [ty_prod]
    

    大概就用三星手提式有线话机自带的劳动做测验了~

    [ty_prod]# info
    Device 28:ED:6A:A0:26:B7 (public)
        Name: tuya_mdev_test
        Alias: tuya_mdev_test
        Appearance: 0x0040
        Icon: phone
        Paired: yes
        Trusted: no
        Blocked: no
        Connected: yes
        LegacyPairing: no
        UUID: Fax                       (00001111-0000-1000-8000-00805f9b34fb)
        UUID: Generic Access Profile    (00001800-0000-1000-8000-00805f9b34fb)
        UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
        UUID: Current Time Service      (00001805-0000-1000-8000-00805f9b34fb)
        UUID: Device Information        (0000180a-0000-1000-8000-00805f9b34fb)
        UUID: Battery Service           (0000180f-0000-1000-8000-00805f9b34fb)
        UUID: Vendor specific           (7905f431-b5ce-4e99-a40f-4b1e122d00d0)
        UUID: Vendor specific           (89d3502b-0f36-433a-8ef4-c502ad55f8dc)
        UUID: Vendor specific           (9fa480e0-4967-4542-9390-d343dc5d04ae)
        UUID: Vendor specific           (d0611e78-bbb4-4591-a5f8-487910ae4366)
    [CHG] Device 28:ED:6A:A0:26:B7 ServicesResolved: no
    [CHG] Device 28:ED:6A:A0:26:B7 Connected: no
    

    大家用Current Time Service,列出具备attributes操作如下:

    [tuya_mdev_test]# menu gatt
    [tuya_mdev_test]# list-attributes 28:ED:6A:A0:26:B7
    ...
    Primary Service
        /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0041
        00001805-0000-1000-8000-00805f9b34fb
        Current Time Service
    Characteristic
        /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0041/char0045
        00002a0f-0000-1000-8000-00805f9b34fb
        Local Time Information
    Characteristic
        /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0041/char0042
        00002a2b-0000-1000-8000-00805f9b34fb
        Current Time
    Descriptor
        /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0041/char0042/desc0044
        00002902-0000-1000-8000-00805f9b34fb
        Client Characteristic Configuration
    ...
    

    上面Current Time Service对应的劳动如下图:

    图片 4

    我们选取Current Time实行操作UUID:0x2A2B

    [ty_prod]# select-attribute /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0041/char0042
    [tuya_mdev_test:/service0041/char0042]# read
    Attempting to read /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0041/char0042
    [CHG] Attribute /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0041/char0042 Value:
      e2 07 09 05 01 24 11 03 f1 02                    .....$....      
      e2 07 09 05 01 24 11 03 f1 02                    .....$.... 
    [tuya_mdev_test:/service0041/char0042]# attribute-info
    Characteristic - Current Time
        UUID: 00002a2b-0000-1000-8000-00805f9b34fb
        Service: /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0041
        Value:
      e2 07 09 05 01 2e 01 03 f5 02                    ..........      
        Notifying: yes
        Flags: read
        Flags: notify
    

    读出结果差不离意思应该是:2018-9/5-1:36:17 周三

    读取一下0x180A的Device Information:

    [tuya_mdev_test:/service0006/char0007]# select-attribute /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0047/char004a
    [tuya_mdev_test:/service0047/char004a]# attribute-info
    Characteristic - Model Number String
        UUID: 00002a24-0000-1000-8000-00805f9b34fb
        Service: /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0047
        Flags: read
    [tuya_mdev_test:/service0047/char004a]# read
    Attempting to read /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0047/char004a
    [CHG] Attribute /org/bluez/hci0/dev_47_B1_26_C1_81_18/service0047/char004a Value:
      69 50 68 6f 6e 65 36 2c 32                       iPhone6,2       
      69 50 68 6f 6e 65 36 2c 32                       iPhone6,2    
    

    道理当然是那样的写、使能notify也很简短,看help就能够。最终断开连接、并退出!!!

    [tuya_mdev_test:/service0047/char004a]# disconnect 28:ED:6A:A0:26:B7
    Attempting to disconnect from 28:ED:6A:A0:26:B7
    [CHG] Device 28:ED:6A:A0:26:B7 ServicesResolved: no
    Successful disconnected
    [CHG] Device 28:ED:6A:A0:26:B7 Connected: no
    [bluetooth]# quit
    

    图片 5

    LINKS

    [1].Cannot connect to BLE device on Raspberry Pi
    [2].Invalid file descriptor gatttool of bluez 5.32
    [3].Get Started with Bluetooth Low Energy on Linux
    [4].Reverse Engineering a Bluetooth Low Energy Light Bulb
    [5].Doing Bluetooth Low Energy on Linux
    [6].Tutorial: BLE Pairing the Raspberry Pi 3 Model B with Hexiwear

    图片 6

    @beautifulzzzz
    智能硬件、物联网,热爱技术,关注产品
    博客:http://blog.beautifulzzzz.com
    园友交流群:414948975
    

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