SWRA772 august   2023 CC2564C

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Running the Bluetooth Code
  6. 3 Demo Application
    1. 3.1 Device 1 (Server) Setup on the Demo Application
    2. 3.2 Device 2 (Client) Setup on the Demo Application
    3. 3.3 Initiating Connection from Device 2
    4. 3.4 Identify Supported Services
    5. 3.5 Data Transfer Between Client and Server
    6. 3.6 Multiple SPPLE Connections Guide
  7. 4 Demonstrating SPP LE on an iOS Device with the LightBlue App
    1. 4.1 LightBlue Overview
    2. 4.2 SPP LE Service Overview
      1. 4.2.1 Characteristics
  8. 5 LightBlue as the Client/SPPLEDemo as the Server
    1. 5.1 Connecting the Devices
    2. 5.2 Enabling Notifications
    3. 5.3 Sending Data from LightBlue/Receiving Data in SPPLEDemo
    4. 5.4 Sending Data from SPPLEDemo/Receiving Data in LightBlue
  9. 6 LightBlue as the Server/SPPLEDemo as the Client
    1. 6.1 Connecting the Devices
    2. 6.2 Sending Data from LightBlue/Receiving Data in SPPLEDemo
    3. 6.3 Sending Data from SPPLEDemo/Receiving Data in LightBlue
  10. 7 Application Commands
  11. 8 General Commands
    1. 8.1 Help (DisplayHelp)
    2. 8.2 Get Local Address
    3. 8.3 Set Baud Rate
    4. 8.4 Quit
  12. 9 BR/EDR Commands
  13. 10GAPLE Commands
    1. 10.1  Set Discoverability Mode
    2. 10.2  Set Connectability Mode
    3. 10.3  Set Pairability Mode
    4. 10.4  Change Pairing Parameters
    5. 10.5  Advertise LE
    6. 10.6  Start Scanning
    7. 10.7  Stop Scanning
    8. 10.8  Connect LE
    9. 10.9  Disconnect LE
    10. 10.10 Pair LE
    11. 10.11 LE Pass Key Response
    12. 10.12 LE Query Encryption
    13. 10.13 Set Passkey
    14. 10.14 Discover GAPS
    15. 10.15 Get Local Name
    16. 10.16 Set Local Name
    17. 10.17 Get Remote Name
    18. 10.18 LE User Confirmation Response
    19. 10.19 Enable SC Only
    20. 10.20 Regenerate P256 Local Keys
    21. 10.21 SC Generate OOB Local Params
    22. 10.22 Set Local Appearance
    23. 10.23 Get Local Appearance
  14. 11SPPLE Commands
    1. 11.1 Discover SPPLE
    2. 11.2 Register SPPLE
    3. 11.3 LE Send
    4. 11.4 Configure SPPLE
    5. 11.5 LE Read
    6. 11.6 Loopback
    7. 11.7 Display Raw Mode Data
    8. 11.8 Automatic Read Mode
  15. 12References
  16. 13Revision History

10.4 Change Pairing Parameters

Description

The ChangePairingParameters command is responsible for changing the LE Pairing Parameters that are exchanged during the Pairing procedure. This command returns zero on successful execution and a negative value on all errors.

Parameters

This command requires five parameters which are the I/O Capability, the Bonding Type, the MITM Requirement, the SC Enable, and the P256 debug mode:

  1. The first parameter must be specified as 0 (for Display Only), 1 (for Display Yes/No), 2 (for Keyboard Only), 3 (for No Input/Output) or 4 (for Keyboard/Display).
  2. The second parameter must be specified as 0 (for No Bonding) or 1 (for Bonding), when at least one of the devices is set to No Bonding, the LTK won't be stored.
  3. The third parameter must be specified as 0 (for No MITM) or 1 (for MITM required).
  4. The fourth parameter must be specified as 0 (for SC disabled) or 1 (for SC enabled), legacy pairing procedure takes place when using SC disable.
  5. The fifth parameter must be specified as 0 (for Debug Mode disabled) or 1 (for P256 debug mode enabled), but only when using SC pairing. P256 debug mode is relevant when set, the values of the P256 private and public keys are pre-defined according to the Bluetooth specification instead of random.

Command Call Examples

  • "ChangeSimplePairingParameters 3 0 0 0 0" Attempts to set the I/O Capability to No Input/Output, Bonding Type set to No Bonding, turns off MITM Protection, disable secure connections and disable debug mode.
  • "ChangeSimplePairingParameters 2 0 1 1 0 " Attempts to set the I/O Capability to Keyboard Only, Bonding Type set to No Bonding, activates MITM Protection, enabling secure connections and disable debug mode.
  • "ChangeSimplePairingParameters 1 1 1 1 1" Attempts to set the I/O Capability to Display Yes/No, bonding type set to Bonding, activates MITM Protection, enabling secure connections and enabling debug mode.

Possible Return Values

  • (0) Successfully Set Pairability Mode
  • (-6) INVALID_PARAMETERS_ERROR
  • (-8) INVALID_STACK_ID_ERROR