rfPacketRx Example

Example Summary

The Packet RX example illustrates how to do simple packet RX using the RF driver. This example is meant to be used with the Packet TX example or SmartRF Studio. For every packet received, Board_PIN_LED2 is toggled. The frequency and other RF settings can be modified using SmartRF Studio.

Peripherals Exercised

• Board_PIN_LED2 - 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>.

Board Specific Settings

1. The default frequency is:
   • 433.92 MHz for the CC1350-LAUNCHXL-433
   • 433.92 MHz for the CC1352P-4-LAUNCHXL
   • 2440 MHz on the CC2640R2-LAUNXHL
   • 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
2. On the CC1352P1 the high PA is enabled (high output power) for all Sub-1 GHz modes by default. The user must set USE_SUB1_HIGH_PA_SETTING to 0 in smartrf_settings.h and smartrf_settings_predefined.h, and rebuild the example, to disable the high PA and use the default PA
3. On the CC1352P-2 the high PA operation for Sub-1 GHz modes is not supported
4. On the CC1352P-4 the default PA is used for all Sub-1 GHz physical modes by default. The user must set USE_SUB1_HIGH_PA_SETTING to 1 in the smartrf_settings.h and smartrf_settings_predefined.h, and rebuild the example, to enable the high PA (high output power) CAUTION
   • This will change the center frequency for 2-GFSK to 490 MHz
     
   • The center frequency for SimpleLink long range (SLR) stays at 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. On another board, run the EasyLink TX example. Board_PIN_LED2 is toggled when data with CRC OK is received.

Application Design Details

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

When the task is executed it:

1. Configures the radio for Proprietary mode
2. Gets access to the radio via the RF drivers RF_open
3. Sets up the radio using CMD_PROP_RADIO_DIV_SETUP command
4. Defines a data queue to handle received data
5. Sets the frequency using CMD_FS command
6. Sends the CMD_PROP_RX command to start receiving data
7. Once data with CRC OK is received we toggle the Board_PIN_LED2 and re-enter RX with the CMD_PROP_RX command

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.