SWRA648 May   2019 CC1352P , CC1352R , CC2642R , CC2642R-Q1 , CC2652P , CC2652R , CC2652R7 , CC2652RB , CC2652RSIP

 

  1.   Bluetooth Low Energy Tree Structure Network
    1.     Trademarks
    2. 1 Introduction
    3. 2 Bluetooth Low Energy Basic Knowledge
    4. 3 Three Kinds of Bluetooth Low Energy Network Structure
      1. 3.1 Star Network
      2. 3.2 Mesh
      3. 3.3 Tree Structure Network
    5. 4 Bluetooth Low Energy Tree Structure Network Analysis
      1. 4.1 Role Analysis in Bluetooth Low Energy Tree Structure
      2. 4.2 Tree Structure Network Establishment Analysis
    6. 5 Bluetooth Low Energy Tree Structure Network Realization
      1. 5.1 Tree Structure Establishment
      2. 5.2 Role Differentiation in Tree Structure Network
      3. 5.3 Data Transmission in Tree Structure Network
    7. 6 Bluetooth Low Energy tree Structure Network Test
    8. 7 References

6 Bluetooth Low Energy tree Structure Network Test

The overall connection diagram is shown in Figure 12. In this setup, there are four father nodes and each father node is connected to seven child nodes. The key parameters used in this example are shown below:

  • Min connection interval = 160
  • Max connection interval = 320
  • Slave latency = 5
overall-connection-diagram_1.gifFigure 12. Overall Connection Diagram

The tree structure network write and notify function on CC2652R1F test result is shown in Figure 13. From the information shown in the serial port, the grandpa node writes to each father node and each father node in turn forwards the data to its child nodes. Meanwhile, each child node notifies the data to its father node and the father node in turn forwards each notification to the grandpa node.

tree-structure-write-and-notify-test.pngFigure 13. Tree Structure Write and Notify Test