与其他无线通信一样，蓝牙设备通信中也是通过消息交互进行信息交流；以下是Wiershark对设备发送和接收内容进行抓包过滤后的结果：Kangguoying2021

        这35步消息的详细内容（Bluetooth HCI H4）分别如下：Kangguoying2021

(1) Command Inquiry

    [Direction: Sent (0x00)]

    HCI Packet Type: HCI Command (0x01)

Bluetooth HCI Command - InquiryKangguoying2021

    Command Opcode: Inquiry (0x0401)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0000 0001 = ocf: 0x0001Kangguoying2021Kangguoying2021

    Parameter Total Length: 5

    LAP: 0x9e8b33Kangguoying2021

    Inquiry Length: 16

    Num Responses: 0

(2) Command Status (Inquiry)

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Command Status

    Event Code: Command Status (0x0f)

    Parameter Total Length: 4Kangguoying2021

    Status: Pending (0x00)Kangguoying2021

    Number of Allowed Command Packets: 1

    Command Opcode: Inquiry (0x0401)

(3) Inquiry Result

Bluetooth HCI H4

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Inquiry Result

    Event Code: Inquiry Result (0x02)

    Parameter Total Length: 15

    Number of responses: 1

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Page Scan Repetition Mode: R1 (0x01)Kangguoying2021Kangguoying2021

    Page Scan Period Mode: P0 (0x00)

    Page Scan Mode: Mandatory Page Scan Mode (0x00)

    Class of Device: 0x420204 (Phone - services: Telephony, Networking)

    .100 0010 1101 1101 = Clock Offset: 0x42dd 

(4) Inquiry Complete

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Inquiry Complete

    Event Code: Inquiry Complete (0x01)

    Parameter Total Length: 1Kangguoying2021

    Status: Success (0x00) 

(5) Remote Name Request

    [Direction: Sent (0x00)]Kangguoying2021

    HCI Packet Type: HCI Command (0x01)Kangguoying2021

Bluetooth HCI Command - Remote Name Request

    Command Opcode: Remote Name Request (0x0419)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0001 1001 = ocf: 0x0019

    Parameter Total Length: 10Kangguoying2021

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Page Scan Repetition Mode: R1 (0x01)Kangguoying2021

    Page Scan Mode: Mandatory Page Scan Mode (0x00)

    .000 0000 0000 0000 = Clock Offset: 0x0000 (0 ms)

    0... .... .... .... = Clock_Offset_Valid_Flag: false (0) 

(6) Command Status (Remote Name Request)

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Command Status

    Event Code: Command Status (0x0f)

    Parameter Total Length: 4

    Status: Pending (0x00)

    Number of Allowed Command Packets: 1

    Command Opcode: Remote Name Request (0x0419) 

(7) Remote Name Req Complete

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Remote Name Req Complete

    Event Code: Remote Name Req Complete (0x07)

    Parameter Total Length: 255Kangguoying2021

    Status: Page Timeout (0x04)Kangguoying2021

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Remote Name: 

(8) Connect Request

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Connect RequestKangguoying2021

    Event Code: Connect Request (0x04)

    Parameter Total Length: 10Kangguoying2021

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Class of Device: 0x6a0204 (Phone - services: Telephony, Audio, Capturing, Networking)

    Link Type: ACL connection (Data Channels) (0x01) 

(9) Accept Connection Request

    [Direction: Sent (0x00)]Kangguoying2021

    HCI Packet Type: HCI Command (0x01)

Bluetooth HCI Command - Accept Connection Request

    Command Opcode: Accept Connection Request (0x0409)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0000 1001 = ocf: 0x0009

    Parameter Total Length: 7Kangguoying2021

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Role: Remain Slave (0x01) 

(10) Command Status (Accept Connection Request)

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Command Status

    Event Code: Command Status (0x0f)

    Parameter Total Length: 4

    Status: Pending (0x00)Kangguoying2021

    Number of Allowed Command Packets: 1

    Command Opcode: Accept Connection Request (0x0409) 

(11) PIN Code Request

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - PIN Code Request

    Event Code: PIN Code Request (0x16)Kangguoying2021

    Parameter Total Length: 6

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa) 

(12) PIN Code Request Reply

    [Direction: Sent (0x00)]

    HCI Packet Type: HCI Command (0x01)

Bluetooth HCI Command - PIN Code Request Reply

    Command Opcode: PIN Code Request Reply (0x040d)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0000 1101 = ocf: 0x000d

    Parameter Total Length: 23

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    PIN Code Length: 4

    PIN Code: 1234 

(13) Command Complete (PIN Code Request Reply)

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Command Complete

    Event Code: Command Complete (0x0e)

    Parameter Total Length: 10Kangguoying2021

    Number of Allowed Command Packets: 1

    Command Opcode: PIN Code Request Reply (0x040d)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0000 1101 = ocf: 0x000d

    Status: Success (0x00)Kangguoying2021

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa) 

(14) Connect Complete

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)Kangguoying2021

Bluetooth HCI Event - Connect Complete

    Event Code: Connect Complete (0x03)

    Parameter Total Length: 11Kangguoying2021

    Status: Authentication Failure (0x05)

    Connection Handle: 0x0029

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Link Type: ACL connection (Data Channels) (0x01)

    Encryption Mode: Encryption Disabled (0x00) 

(15) Connect Request

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Connect RequestKangguoying2021

    Event Code: Connect Request (0x04)

    Parameter Total Length: 10

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Class of Device: 0x6a0204 (Phone - services: Telephony, Audio, Capturing, Networking)

    Link Type: ACL connection (Data Channels) (0x01) 

(16) Accept Connection Request

    [Direction: Sent (0x00)]

    HCI Packet Type: HCI Command (0x01)

Bluetooth HCI Command - Accept Connection Request

    Command Opcode: Accept Connection Request (0x0409)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0000 1001 = ocf: 0x0009Kangguoying2021

    Parameter Total Length: 7

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Role: Remain Slave (0x01) 

(17) Command Status (Accept Connection Request)

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)Kangguoying2021

Bluetooth HCI Event - Command Status

    Event Code: Command Status (0x0f)

    Parameter Total Length: 4Kangguoying2021

    Status: Pending (0x00)Kangguoying2021

    Number of Allowed Command Packets: 1

    Command Opcode: Accept Connection Request (0x0409) 

(18) PIN Code Request

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)Kangguoying2021

Bluetooth HCI Event - PIN Code Request

    Event Code: PIN Code Request (0x16)

    Parameter Total Length: 6Kangguoying2021

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa) 

(19) PIN Code Request Reply

    [Direction: Sent (0x00)]Kangguoying2021

    HCI Packet Type: HCI Command (0x01)Kangguoying2021

Bluetooth HCI Command - PIN Code Request Reply

    Command Opcode: PIN Code Request Reply (0x040d)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0000 1101 = ocf: 0x000d

    Parameter Total Length: 23Kangguoying2021

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    PIN Code Length: 4

    PIN Code: 1234 

(20) Command Complete (PIN Code Request Reply)

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Command Complete

    Event Code: Command Complete (0x0e)

    Parameter Total Length: 10

    Number of Allowed Command Packets: 1

    Command Opcode: PIN Code Request Reply (0x040d)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0000 1101 = ocf: 0x000dKangguoying2021

    Status: Success (0x00)

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa) 

(21) Link Key Notification

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Link Key NotificationKangguoying2021

    Event Code: Link Key Notification (0x18)

    Parameter Total Length: 23Kangguoying2021

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Link Key: ec596f3306bba9e53d7b72de47c1404a

    Key Type: Combination Key (0x00) 

(22) Connect Complete

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)Kangguoying2021

Bluetooth HCI Event - Connect Complete

    Event Code: Connect Complete (0x03)

    Parameter Total Length: 11Kangguoying2021

    Status: Success (0x00)

    Connection Handle: 0x002aKangguoying2021

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Link Type: ACL connection (Data Channels) (0x01)

    Encryption Mode: Encryption only for point-to-point packets (0x01) 

(23) Write Link Policy Settings

    [Direction: Sent (0x00)]

    HCI Packet Type: HCI Command (0x01)

Bluetooth HCI Command - Write Link Policy Settings

    Command Opcode: Write Link Policy Settings (0x080d)

        0000 10.. .... .... = ogf: Link Policy Commands (0x0002)

        .... ..00 0000 1101 = ocf: 0x000dKangguoying2021

    Parameter Total Length: 4

    Connection Handle: 0x002aKangguoying2021

    .... .... .... ...1 = Enable Master Slave Switch: true (1)

    .... .... .... ..1. = Enable Hold Mode: true (1)

    .... .... .... .1.. = Enable Sniff Mode: true (1)

    .... .... .... 1... = Enable Park Mode: true (1) 

(24) Page Scan Repetition Mode Change

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Page Scan Repetition Mode Change

    Event Code: Page Scan Repetition Mode Change (0x20)

    Parameter Total Length: 7Kangguoying2021

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Page Scan Repetition Mode: R1 (0x01) 

(25) Command Complete (Write Link Policy Settings)

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Command Complete

    Event Code: Command Complete (0x0e)

    Parameter Total Length: 6Kangguoying2021

    Number of Allowed Command Packets: 1

    Command Opcode: Write Link Policy Settings (0x080d)

        0000 10.. .... .... = ogf: Link Policy Commands (0x0002)

        .... ..00 0000 1101 = ocf: 0x000dKangguoying2021

    Status: Success (0x00)

    Connection Handle: 0x002a 

(26) Change Connection Packet Type

    [Direction: Sent (0x00)]

    HCI Packet Type: HCI Command (0x01)

Bluetooth HCI Command - Change Connection Packet Type

    Command Opcode: Change Connection Packet Type (0x040f)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0000 1111 = ocf: 0x000f

    Parameter Total Length: 4

    Connection Handle: 0x002a

    .... .... .... ..0. = Packet Type 2-DH1: false (0)

    .... .... .... .0.. = Packet Type 3-DH1: false (0)

    .... .... .... 1... = Packet Type DM1: true (1)Kangguoying2021

    .... .... ...1 .... = Packet Type DH1: true (1)

    .... ...0 .... .... = Packet Type 2-DH3: false (0)

    .... ..0. .... .... = Packet Type 3-DH3: false (0)

    .... .1.. .... .... = Packet Type DM3: true (1)

    .... 1... .... .... = Packet Type DH3: true (1)

    ...0 .... .... .... = Packet Type 2-DH5: false (0)

    ..0. .... .... .... = Packet Type 3-DH5: false (0)

    .1.. .... .... .... = Packet Type DM5: true (1)

    1... .... .... .... = Packet Type DH5: true (1) 

(27) Max Slots Change

    [Direction: Rcvd (0x01)]Kangguoying2021

    HCI Packet Type: HCI Event (0x04)Kangguoying2021

Bluetooth HCI Event - Max Slots Change

    Event Code: Max Slots Change (0x1b)

    Parameter Total Length: 3Kangguoying2021

    Connection Handle: 0x002aKangguoying2021

    Maximum Number of Slots: 5 

(28) Command Status (Change Connection Packet Type)

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Command Status

    Event Code: Command Status (0x0f)

    Parameter Total Length: 4

    Status: Pending (0x00)

    Number of Allowed Command Packets: 1

    Command Opcode: Change Connection Packet Type (0x040f) 

(29) Remote Name Request

    [Direction: Sent (0x00)]

    HCI Packet Type: HCI Command (0x01)

Bluetooth HCI Command - Remote Name Request

    Command Opcode: Remote Name Request (0x0419)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0001 1001 = ocf: 0x0019

    Parameter Total Length: 10

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Page Scan Repetition Mode: R1 (0x01)Kangguoying20210209

    Page Scan Mode: Mandatory Page Scan Mode (0x00)

    .000 0000 0000 0000 = Clock Offset: 0x0000 (0 ms)

    0... .... .... .... = Clock_Offset_Valid_Flag: false (0) 

(30) Connection Packet Type Changed

    [Direction: Rcvd (0x01)]Kangguoying20210209

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Connection Packet Type Changed

    Event Code: Connection Packet Type Changed (0x1d)

    Parameter Total Length: 5

    Status: Success (0x00)Kangguoying20210209

    Connection Handle: 0x002a

    Usable packet types: DM1 HV1 2-DH1Kangguoying20210209

        .... .... .... ..0. = ACL Link Type 2-DH1: False (0)

        .... .... .... .0.. = ACL Link Type 3-DH1: False (0)

        .... .... .... 1... = ACL Link Type DM1: True (1)

        .... .... ...1 .... = ACL Link Type DH1: True (1)

        .... ...0 .... .... = ACL Link Type 2-DH3: False (0)

        .... ..0. .... .... = ACL Link Type 3-DH3: False (0)

        .... .1.. .... .... = ACL Link Type DM3: True (1)

        .... 1... .... .... = ACL Link Type DH3: True (1)Kangguoying20210209

        ...0 .... .... .... = ACL Link Type 2-DH5: False (0)

        ..0. .... .... .... = ACL Link Type 3-DH5: False (0)

        .1.. .... .... .... = ACL Link Type DM5: True (1)

        1... .... .... .... = ACL Link Type DH5: True (1)

        .... .... ..0. .... = SCO Link Type HV1: False (0)

        .... .... .0.. .... = SCO Link Type HV2: False (0)

        .... .... 0... .... = SCO Link Type HV3: False (0) 

(31) Command Status (Remote Name Request)

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)Kangguoying20210209

Bluetooth HCI Event - Command Status

    Event Code: Command Status (0x0f)

    Parameter Total Length: 4Kangguoying20210209

    Status: Pending (0x00)Kangguoying20210209

    Number of Allowed Command Packets: 1

    Command Opcode: Remote Name Request (0x0419) 

(32) Remote Name Request

    [Direction: Sent (0x00)]Kangguoying20210209

    HCI Packet Type: HCI Command (0x01)Kangguoying20210209

Bluetooth HCI Command - Remote Name Request

    Command Opcode: Remote Name Request (0x0419)

        0000 01.. .... .... = ogf: Link Control Commands (0x0001)

        .... ..00 0001 1001 = ocf: 0x0019Kangguoying20210209

    Parameter Total Length: 10

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Page Scan Repetition Mode: R1 (0x01)Kangguoying20210209

    Page Scan Mode: Mandatory Page Scan Mode (0x00)

    .000 0000 0000 0000 = Clock Offset: 0x0000 (0 ms)Kangguoying20210209

    0... .... .... .... = Clock_Offset_Valid_Flag: false (0) 

(33) Command Status (Remote Name Request)

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)Kangguoying20210209

Bluetooth HCI Event - Command Status

    Event Code: Command Status (0x0f)

    Parameter Total Length: 4

    Status: Pending (0x00)

    Number of Allowed Command Packets: 0Kangguoying20210209Kangguoying20210209

    Command Opcode: Remote Name Request (0x0419) 

(34) Remote Name Req Complete

    [Direction: Rcvd (0x01)]

    HCI Packet Type: HCI Event (0x04)Kangguoying20210209

Bluetooth HCI Event - Remote Name Req Complete

    Event Code: Remote Name Req Complete (0x07)

    Parameter Total Length: 255Kangguoying20210209

    Status: Other End Terminated Connection: User Ended Connection (0x13)

    BD_ADDR:000e:6d:072efa (MurataMa_07:2e:fa)

    Remote Name: 

(35) Disconnect Complete

           [Direction: Rcvd (0x01)]Kangguoying20210209

    HCI Packet Type: HCI Event (0x04)

Bluetooth HCI Event - Disconnect Complete

    Event Code: Disconnect Complete (0x05)

    Parameter Total Length: 4Kangguoying20210209

    Status: Success (0x00)

    Connection Handle: 0x002aKangguoying20210209

    Reason: Other End Terminated Connection: User Ended Connection (0x13)

原文来自：sharetechnote

整理：Kangguoying20210209