3200信道监测功能

There are two methods that I can recommend for retrieving such information:

1. Using the "Rx Statistics" feature - please refer to chapter 17 in the networking programmers guide: http://processors.wiki.ti.com/index.php/CC31xx_Programmers_Guide
   
2. Another common way of "sensing" the RF environment in WLAN is to read the scan results.
   In CC3200\CC3100 it is done by using "sl_WlanGetNetworkList()" API. one of the parameters returned for each scan result is its' RSSI value.