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

4.2.1 Characteristics

SPP LE implements credit-based protocol using GATT characteristics. The SPP LE service has 4 characteristics:

Name UUID Purpose
Rx Characteristic 0x8B00ACE7-EB0B-49B0-BBE9-9AEE0A26E1A3 Client sends data to the server using this characteristic with an ATT Write Request.
Tx Credits Characteristic 0xBA04C4B2-892B-43BE-B69C-5D13F2195392 Client sends credits to the server using this characteristic with an ATT Write Request.
Tx Characteristic 0x0734594A-A8E7-4B1A-A6B1-CD5243059A57 Server sends data to the client using this characteristic with an ATT Handle Value Notification.
Rx Credits Characteristic 0xE06D5EFB-4F4A-45C0-9EB1-371AE5A14AD4 Server sends credits to the client using this characteristic with an ATT Handle Value Notification.

The client and server use these characteristics to send and receive data and credits. The following is a demonstration of the SPPLEDemo as the server and LightBlue as the client. Download the LightBlue app from the App Store and turn on Bluetooth on an iOS device.

Note:

For more information about characteristics, ATT Write Requests, and ATT Handle Value Notifications, please refer to the Attribute Protocol (ATT) and Generic AttributeProfile (GATT) specifications in the Bluetooth Core specification, which can be found on the Bluetooth SIG's website

.

Note:

The following instructions were confirmed in version 2.2.0 of LightBlue running on an iPhone 5 with iOS 8.1.3. These instructions can be used with the SPPLEDemo app from any TI Bluetooth SDK, but in this example the SPPLEDemo app from the Tiva v1.2 R2 SDK.