6.4 Configuring the Two Wireless Nodes

The following are the steps to configure the nodes:

  1. The user can connect to any of the last Paired/Connected devices. If connection is through the previous connection details, configure the modules such that one of the nodes, for example, Node A, initiates the connection and the other node, for example, Node B, waits for Node A to initiate the connection by sending the request to join. The LED (green) is still toggling, which indicates the unconnected state of the nodes (see the following figure). For a new connection, refer to step 7.
  2. At Node A and Node B, press switch S1 to connect to the previous node.
    Figure 6-5. Connecting to Last Paired/Connected Devices
  3. The user can now press switch S1 to initiate the connection from Node A. At Node B, also press switch S1 to wait for a peer connection request (see the following figure).
    Figure 6-6. Initiating or Waiting for a Connection Request
  4. Node A can select one of the MAC_ADDR (MAC addresses) from the Trusted Device List (TDL) to enable sending a connection request to Node B (see the following figure).
  5. Press switch S1 at Node A to connect to any of the previously connected peer devices (in this case, Node B).
    Figure 6-7. Selecting Addresses from Trusted Device List (TDL)
  6. An attempt to connect to the selected MAC_ADDR is done (that is, Node A connecting to Node B) (see the following figure). Upon successful connection, the toggling LED (green) becomes stable (refer to step 1 of Post Connection). If there are no devices selected in the previous step, Node A cannot connect to any of the devices from TDL.
    Figure 6-8. Connecting to the Selected Device/Node
  7. The user can choose whether a factory reset must be done (see the following figure).
    Figure 6-9. Factory Reset
    Note: Avoid performing a factory reset before testing the code if the module contains important settings. The factory reset restores all the factory defaults and erases any previous settings.
  8. The module displays its MAC_ADDR, which the user must make a note of for further selection and configuration (see the following figure).
    Figure 6-10. Device MAC_ADDRESS Display