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

5.2 Enabling Notifications

To enable notifications on the Tx Characteristic and Rx Credits Characteristic in LightBlue do the following:

  1. Open the Tx Characteristic (0x0734594A-A8E7-4B1A-A6B1-CD5243059A57).
  2. Choose listen for notifications.
  3. Press the back button in the top left corner.
  4. Open the Rx Credits Characteristic (0xE06D5EFB-4F4A-45C0-9EB1-371AE5A14AD4).
  5. Choose listen for notifications.
  6. Press the back button in the top left corner.

Observe that after enabling notifications on the Rx Credits Characteristic (0xE06D5EFB-4F4A-45C0-9EB1-371AE5A14AD4) that SPPLEDemo sends initial credits to LightBlue and observe the 0x8300 displayed twice in the app:


GUID-20230227-SS0I-RZSM-RZ0L-XRGXJDDHHMVC-low.png

Note: The first instance of 0x8300 is seen because LightBlue read the characteristic automatically when the connection was first established.
Note: The data here is displayed in little-endian byte order, the actual number of credits is 0083 in hexadecimal, 131 in decimal.