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bleLLDataChannelPDUConfig

Bluetooth LE LL data channel PDU configuration parameters

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    Description

    The bleLLDataChannelPDUConfig object parameterizes the bleLLDataChannelPDU function to generate a Bluetooth® low energy (LE) link layer (LL) data channel protocol data unit (PDU).

    Creation

    Syntax

    cfgLLData = bleLLDataChannelPDUConfig
    cfgLLData = bleLLDataChannelPDUConfig(Name,Value)

    Description

    cfgLLData = bleLLDataChannelPDUConfig creates a default Bluetooth LE LL data channel PDU configuration object, cfgLLData.

    example

    cfgLLData = bleLLDataChannelPDUConfig(Name,Value) sets properties by using one or more name-value pairs. Enclose each property name in quotes. For example, ('LLID','Data (start fragment/complete)') sets the type of Bluetooth LE LL data channel PDU as a data PDU.

    example

    Properties

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    Note

    For more information about Bluetooth LE LL data channel PDU properties and their respective values, see Volume 6, Part B, Section 2.4 of the Bluetooth Core Specification [2].

    Link layer identifier, specified as a character vector or a string scalar to describe the type of a Bluetooth LE LL data channel PDU. Specify this property as one of these values:

    • 'Data (continuation fragment/empty)'

    • 'Data (start fragment/complete)'

    • 'Control'

    Data Types: char | string

    Next expected sequence number, specified as 1 (true) or 0 (false). This property indicates either an acknowledgment for the last received packet or a request for resending the last transmitted packet from the peer.

    Data Types: logical

    Transmitting packet sequence number, specified as 1 (true) or 0 (false). This property indicates the sequence number of the transmitted packet.

    Data Types: logical

    Indication for more data, specified as 1 (true) or 0 (false). A 1 (true) value indicates that the sender has more data to send.

    Data Types: logical

    CRC initialization value, specified as a 6-element character vector or a string scalar denoting a 3-octet hexadecimal value.

    Data Types: char | string

    Bluetooth LE LL control PDU payload configuration object, specified as a bleLLControlPDUConfig object. The object configures the fields of this value by using the properties of bleLLControlPDUConfig object. The object uses this property to generate and decode a Bluetooth LE LL control PDU.

    Examples

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    Open Live Script

    Create a default Bluetooth LE LL data channel PDU configuration object for a data PDU.

    cfgLLData = bleLLDataChannelPDUConfig
    cfgLLData = 
  bleLLDataChannelPDUConfig with properties:

                 LLID: 'Data (continuation fragment/empty)'
                 NESN: 0
       SequenceNumber: 0
             MoreData: 0
    CRCInitialization: '012345'

    Set the value of LLID to 'Data (start fragment/complete)'.

    cfgLLData.LLID = 'Data (start fragment/complete)'
    cfgLLData = 
  bleLLDataChannelPDUConfig with properties:

                 LLID: 'Data (start fragment/complete)'
                 NESN: 0
       SequenceNumber: 0
             MoreData: 0
    CRCInitialization: '012345'
    Open Live Script

    Create two unique Bluetooth LE LL data channel PDU configuration objects for a control PDU of type 'Channel map indication' and 'Version indication'.

    Create a Bluetooth LE LL control PDU payload configuration object for a control PDU with opcode 'Channel map indication'.

    cfgControl = bleLLControlPDUConfig('Opcode','Channel map indication')
    cfgControl = 
  bleLLControlPDUConfig with properties:

          Opcode: 'Channel map indication'
         Instant: 0
    UsedChannels: [0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36]

    Create a Bluetooth LE LL data channel configuration object by specifying the values of 'LLID' as 'Control' and 'ControlConfig' as 'cfgControl'.

     cfgLLData = bleLLDataChannelPDUConfig('LLID','Control', ...
    'ControlConfig',cfgControl)
    cfgLLData = 
  bleLLDataChannelPDUConfig with properties:

                 LLID: 'Control'
                 NESN: 0
       SequenceNumber: 0
             MoreData: 0
    CRCInitialization: '012345'
        ControlConfig: [1x1 bleLLControlPDUConfig]

    Create another Bluetooth LE LL data channel configuration object for a control PDU, this time specifying the opcode as 'Version indication'.

    cfgControl.Opcode = 'Version indication';
cfgControl.SubVersionNumber = '008E'
    cfgControl = 
  bleLLControlPDUConfig with properties:

               Opcode: 'Version indication'
        VersionNumber: '5.0'
    CompanyIdentifier: 'FFFF'
     SubVersionNumber: '008E'

    Create a Bluetooth LE LL data channel configuration object, specifying the values of 'ControlConfig' as 'cfgControl'.

    cfgLLData.ControlConfig = cfgControl
    cfgLLData = 
  bleLLDataChannelPDUConfig with properties:

                 LLID: 'Control'
                 NESN: 0
       SequenceNumber: 0
             MoreData: 0
    CRCInitialization: '012345'
        ControlConfig: [1x1 bleLLControlPDUConfig]
    Open Live Script

    Create a default Bluetooth LE LL data channel PDU configuration object for a data PDU.

    cfgLLData = bleLLDataChannelPDUConfig
    cfgLLData = 
  bleLLDataChannelPDUConfig with properties:

                 LLID: 'Data (continuation fragment/empty)'
                 NESN: 0
       SequenceNumber: 0
             MoreData: 0
    CRCInitialization: '012345'

    Initialize the CRC value.

    cfgLLData.CRCInitialization = '123456';

    Generate a Bluetooth LE LL data channel PDU by using the upper-layer payload, '030004000A0100'.

    pdu = bleLLDataChannelPDU(cfgLLData,'030004000A0100');

    Decode the generated Bluetooth LE LL data channel PDU by initializing the CRC value. The returned status indicates decoding is successful.

    crcInit = '123456';
[status,cfgRx,llPayload] = bleLLDataChannelPDUDecode(pdu,crcInit)
    status = 
  blePacketDecodeStatus enumeration

    Success


    cfgRx = 
  bleLLDataChannelPDUConfig with properties:

                 LLID: 'Data (continuation fragment/empty)'
                 NESN: 0
       SequenceNumber: 0
             MoreData: 0
    CRCInitialization: '123456'


    llPayload = 7x2 char array
    '03'
    '00'
    '04'
    '00'
    '0A'
    '01'
    '00'

    References

    [1] Bluetooth Technology Website. “Bluetooth Technology Website | The Official Website of Bluetooth Technology.” Accessed November 22, 2021. https://www.bluetooth.com/.

    [2] Bluetooth Special Interest Group (SIG). "Bluetooth Core Specification." Version 5.3. https://www.bluetooth.com/.

    Extended Capabilities

    C/C++ Code Generation
    Generate C and C++ code using MATLAB® Coder™.

    Version History

    Introduced in R2019b

    See Also

    Functions

    Objects

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