esp32-s2: wifi enhancement to include countrycode

ports/esp32s2/common-hal/wifi/Network.c

@@ -48,3 +48,9 @@ mp_obj_t common_hal_wifi_network_get_rssi(wifi_network_obj_t *self) {
 mp_obj_t common_hal_wifi_network_get_channel(wifi_network_obj_t *self) {
     return mp_obj_new_int(self->record.primary);
 }
+
+mp_obj_t common_hal_wifi_network_get_country(wifi_network_obj_t *self) {
+    const char* cstr = (const char*) self->record.country.cc;
+        // 2 instead of strlen(cstr) as this gives us only the country-code
+        return mp_obj_new_str(cstr, 2);
+}

ports/esp32s2/common-hal/wifi/Radio.c

@@ -194,6 +194,17 @@ mp_obj_t common_hal_wifi_radio_get_ap_info(wifi_radio_obj_t *self) {
     if (esp_wifi_sta_get_ap_info(&self->ap_info.record) != ESP_OK){
         return mp_const_none;
     } else {
+        if (strlen(self->ap_info.record.country.cc) == 0) {
+            // Workaround to fill country related information in ap_info until ESP-IDF carries a fix
+            // esp_wifi_sta_get_ap_info does not appear to fill wifi_country_t (e.g. country.cc) details
+            // (IDFGH-4437) #6267
+            // Note: It is possible that Wi-Fi APs don't have a CC set, then even after this workaround
+            //       the element would remain empty.
+            memset(&self->ap_info.record.country, 0, sizeof(wifi_country_t));
+            if (esp_wifi_get_country(&self->ap_info.record.country) != ESP_OK) {
+                return mp_const_none;
+            }
+        }
         memcpy(&ap_info->record, &self->ap_info.record, sizeof(wifi_ap_record_t));
         return MP_OBJ_FROM_PTR(ap_info);
     }

shared-bindings/wifi/Network.c

@@ -108,12 +108,29 @@ const mp_obj_property_t wifi_network_channel_obj = {
                (mp_obj_t)&mp_const_none_obj },
 };
 
+//|     country: str
+//|     """String id of the country code"""
+//|
+STATIC mp_obj_t wifi_network_get_country(mp_obj_t self) {
+    return common_hal_wifi_network_get_country(self);
+
+}
+MP_DEFINE_CONST_FUN_OBJ_1(wifi_network_get_country_obj, wifi_network_get_country);
+
+const mp_obj_property_t wifi_network_country_obj = {
+    .base.type = &mp_type_property,
+    .proxy = { (mp_obj_t)&wifi_network_get_country_obj,
+               (mp_obj_t)&mp_const_none_obj,
+               (mp_obj_t)&mp_const_none_obj },
+};
+
 
 STATIC const mp_rom_map_elem_t wifi_network_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_ssid), MP_ROM_PTR(&wifi_network_ssid_obj) },
     { MP_ROM_QSTR(MP_QSTR_bssid), MP_ROM_PTR(&wifi_network_bssid_obj) },
     { MP_ROM_QSTR(MP_QSTR_rssi), MP_ROM_PTR(&wifi_network_rssi_obj) },
     { MP_ROM_QSTR(MP_QSTR_channel), MP_ROM_PTR(&wifi_network_channel_obj) },
+    { MP_ROM_QSTR(MP_QSTR_country), MP_ROM_PTR(&wifi_network_country_obj) },
 };
 
 STATIC MP_DEFINE_CONST_DICT(wifi_network_locals_dict, wifi_network_locals_dict_table);

shared-bindings/wifi/Network.h

@@ -39,5 +39,6 @@ extern mp_obj_t common_hal_wifi_network_get_ssid(wifi_network_obj_t *self);
 extern mp_obj_t common_hal_wifi_network_get_bssid(wifi_network_obj_t *self);
 extern mp_obj_t common_hal_wifi_network_get_rssi(wifi_network_obj_t *self);
 extern mp_obj_t common_hal_wifi_network_get_channel(wifi_network_obj_t *self);
+extern mp_obj_t common_hal_wifi_network_get_country(wifi_network_obj_t *self);
 
 #endif // MICROPY_INCLUDED_SHARED_BINDINGS_WIFI_NETWORK_H

shared-bindings/wifi/Radio.c

@@ -295,7 +295,7 @@ const mp_obj_property_t wifi_radio_ipv4_dns_obj = {
 };
 
 //|     ap_info: Optional[Network]
-//|     """Network object containing BSSID, SSID, channel, and RSSI when connected to an access point. None otherwise."""
+//|     """Network object containing BSSID, SSID, channel, country and RSSI when connected to an access point. None otherwise."""
 //|
 STATIC mp_obj_t wifi_radio_get_ap_info(mp_obj_t self) {
     return common_hal_wifi_radio_get_ap_info(self);