# rfcarrierwave

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

The carrier wave (CW) example sends a continuous carrier wave or pseudo-random modulated signal on a fixed frequency. The frequency and other RF settings can be modified using SmartRF Studio or the System Configuration Tool (SysConfig).

Peripherals Exercised

N/A

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>.

Board Specific Settings

  1. The default frequency is:
    • 433.92 MHz for the CC1350-LAUNCHXL-433
    • 433.92/490 MHz for the CC1352P-4-LAUNCHXL
    • 2440 MHz on the CC2640R2-LAUNCHXL
    • 868.0 MHz for other launchpads In order to change frequency, modify the smartrf_settings.c file. This can be done using the code export feature in Smart RF Studio, or directly in the file. If the project is SysConfig enabled, the frequency can be adjusted in the Custom RF Stack Module.
  2. On the CC1352P1 the high PA is enabled (high output power) for all Sub-1 GHz modes by default.
  3. On the CC1352P-2 the high PA operation for Sub-1 GHz modes is not supported
  4. On the CC1352P-4 the high PA is enabled (high output power) for all Sub-1 GHz modes by default.
    • The center frequency for 2-GFSK is set to 490 MHz
    • CAUTION: The center frequency for SimpleLink long range (SLR) is set to 433.92 MHz, but the high output power violates the maximum power output requirement for this band
  5. The CC2640R2 is setup to run all proprietary physical modes at a center frequency of 2440 MHz, at a data rate of 250 Kbps

Example Usage

Run the example.

Application Design Details

This examples consists of a single task and the exported SmartRF Studio radio settings.

To switch between carrier wave (1) and modulated signal (0) set the following in the code (CW is set as default):

RF_cmdTxTest.config.bUseCw = 1; // CW
RF_cmdTxTest.config.bUseCw = 0; // modulated signal

In order to achieve +14 dBm output power, make sure that the define CCFG_FORCE_VDDR_HH = 0x1 in ccfg.c. This requirement holds for CC13x2P boards when using the default PA.

When the task is executed it:

  1. Configures the radio for Proprietary mode
  2. Explicitly configures CW (1) or Modulated (0). Default modulated mode is PRBS-15
  3. Gets access to the radio via the RF drivers RF_open
  4. Sets up the radio using CMD_PROP_RADIO_DIV_SETUP command
  5. Sets the frequency using CMD_FS command
  6. Sends the CMD_TX_TEST command to start sending the CW or Pseudo-random signal forever

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.