# rfWakeOnRadioTx

SysConfig Notice

All examples will soon be supported by SysConfig, a tool that will help you graphically configure your software components. A preview is available today in the examples/syscfg_preview directory. Starting in 3Q 2019, with SDK version 3.30, only SysConfig-enabled versions of examples will be provided. For more information, click here.

Project Setup using the System Configuration Tool (SysConfig)

The purpose of SysConfig is to provide an easy to use interface for configuring drivers, RF stacks, and more. The .syscfg file provided with each example project has been configured and tested for that project. Changes to the .syscfg file may alter the behavior of the example away from default. Some parameters configured in SysConfig may require the use of specific APIs or additional modifications in the application source code. More information can be found in SysConfig by hovering over a configurable and clicking the question mark (?) next to it's name.

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

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 wake-up 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.