Similar to TX, receiver performance operations can be analyzed using external equipment. The setup is identical to 'Figure 3-1', except the Wi-Fi Demodulator is replaced with the signal generator. Any Wi-FI signal that is supported by CC33XX can be used for testing. By using RX commands, performance of the receiver can be examined.

1. Refer to 1 through 3 in the 'SDIO Interface' section to set up Calibrator Tool. Start setting up the receiving functions by tuning the specifying the band and channel. For this example, channel 6 is used. This depends on the signal being generated from the equipment being utilized.

   calibrator wlan0 cc33xx_plt tune_channel 6 0 0

2. Start the radio to start evaluating the receiving operation. In this command, a dummy source MAC address of 'FF:FF:FF:FF:FF:FF' is provided. This can be altered to match the source address of the equipment if required.

   calibrator wlan0 cc33xx_plt start_rx -source_mac FF:FF:FF:FF:FF:FF -ack_enable 1

   Sample output:

   Calibrator:: Starting RX Simulation (Note that statistics counters are being reset)...

3. Retrieve receiver statistics by utilizing the code below:

   calibrator wlan0 cc33xx_plt get_rx_stats

   Sample output:

   [  280.360585] wlcore: testmode cmd: radio status=0
   Total Received Packets: 3003
   FCS Errors:             829
   MAC Mismatch:           0
   Good Packets:           2174
   Average RSSI (SOC):     -91
   Average RSSI (ANT):     -188
   status: 1
   PER:                    0.276057     # PER = Total Bad / Total Received

   Review the obtained data. The device should be picking up several packets from the provided signal. By confirming these parameters given by this output, performance can be reviewed for RX operation.

4. After review, stop the receiver.

   calibrator wlan0 cc33xx_plt stop_rx