-`country_info` This table contains the country info configuration. (If a blank table is passed to this function, default values will be configured.)
-`country` Country code, 2 character string containing the country code (a list of country codes can be found [here](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2#Officially_assigned_code_elements)). (Default:"CN")
-`end_ch` Ending channel, must not be less than starting channel (range:1-14). (Default:13)
-`policy` The policy parameter determines which country info configuration to use, country info given to station by AP or local configuration. (default:`wifi.COUNTRY_AUTO`)
-`wifi.COUNTRY_AUTO` Country policy is auto, NodeMCU will use the country info provided by AP that the station is connected to.
- while in stationAP mode, beacon/probe respose will reflect the country info of the AP that the station is connected to.
-`wifi.COUNTRY_MANUAL` Country policy is manual, NodeMCU will use locally configured country info.