Function esp_idf_sys::esp_wifi_get_country_code

pub unsafe extern "C" fn esp_wifi_get_country_code(
    country: *mut c_char,
) -> esp_err_t

@brief get the current country code

@param country country code

@return

• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
• ESP_ERR_INVALID_ARG: invalid argument