rfWsnConcentrator Example

Example Summary

The WSN Concentrator example illustrates how to create a simple Wireless Sensor Network Concentrator device which listens for packets from other nodes. This example is meant to be used together with the WSN Node example to form a one- to-many network where the nodes send messages to the concentrator.

This examples showcases the use of several Tasks, Semaphores and Events to receive packets, send acknowledgements and display the received data on the LCD. For the radio layer, this example uses the EasyLink API which provides an easy-to-use API for the most frequently used radio operations.

Refer to EasyLink API for more information on the EasyLink API.

Peripherals Exercised

• Board_PIN_LED0 - Toggled when data is received over the RF interface

Resources & Jumper Settings

If you’re using an IDE (such as CCS or IAR), please refer to Board.html in your project directory for resources used and board-specific jumper settings. Otherwise, you can find Board.html in the directory <SDK_INSTALL_DIR>/source/ti/boards/<BOARD>.

Example Usage

Run the example. On another board (or several boards) run the WSN Node example. The LCD will show the discovered node(s). When the collector receives data from a new node, it is given a new row on the display and the received value is shown. If more than 7 nodes are detected, the device list rolls over, overriding the first. Whenever an updated value is received from a node, it is updated on the LCD display.

Application Design Details

This examples consists of two tasks, one application task and one radio protocol task.

The ConcentratorRadioTask handles the radio protocol. This sets up the EasyLink API and uses it to always wait for packets on a set frequency. When it receives a valid packet, it sends an ACK and then forwards it to the ConcentratorTask.

The ConentratorTask receives packets from the ConcentratorRadioTask, displays the data on the LCD and toggles Board_PIN_LED0.

RadioProtocol.h can also be used to change the PHY settings to be either the default IEEE 802.15.4g 50kbit, Long Range Mode or custom settings. In the case of custom settings, the smartrf_settings.c file is used. This can be changed either by exporting from Smart RF Studio or directly in the file.

Note for IAR users: When using the CC1310DK, the TI XDS110v3 USB Emulator must be selected. For the CC1310_LAUNCHXL, select TI XDS110 Emulator. In both cases, select the cJTAG interface.