rfWakeOnRadioTx Example

Example Summary

This examples showcases the Wake-on-Radio (WoR) functionality of the CC1310 to significantly lower the power consumption of an RF link. It shows how to use the RF Driver to schedule automatic wake-ups in the future and send messages with long preambles.

This example is intended to be used together with the rfWakeOnRadioRx example.

Peripherals Exercised

• Board_PIN_LED1- Toggled when data is transmitted over the RF interface
• Board_PIN_BUTTON0 - Press to send packet

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 one of the boards above, this will be the TX board. Pressing Board_PIN_BUTTON0 will trigger a transmit. Every time a packet is sent, Board_PIN_LED1 will toggle.

Start the rfWakeOnRadioRx companion example on another board (RX board). Board_PIN_LED1 on the RX board should now be blinking.

With the RX board running, press Board_PIN_BUTTON0 on the TX board. Both Board_PIN_LED1 on the TX board and Board_PIN_LED1 on the RX board should now toggle.

Basic configuration

It is possible to use the Code Export feature of SmartRF Studio with the Packet TX / RX tab selected to export settings for this example. This example has been tested mainly with 50kbit/s.

The wakeup interval is set using the WOR_WAKEUPS_PER_SECOND define at the top of the rfWakeOnRadioTx.c file. Make sure that this is set to the same in both the RX and TX part of the Wake-on-Radio example.

Application Design Details

The complete Wake-on-Radio example suite is based on the principle of duty-cycling the radio and entering RX just as much as necessary to detect a packet.

This TX example is very similar to the rfPacketTX example except that it uses the CMD_PROP_TX_ADV to be able to send a long preamble.

The length of the preamble is dynamically calculated based on the WOR_WAKEUPS_PER_SECOND define at the top of the rfWakeOnRadioTx.c file.

For more details about the general operation of the Wake-on-Radio example suite, please see the rfWakeOnRadioRx README.

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.