WiFi: add SSID() and RSSI()

Author: pennam

libraries/SocketWrapper/WiFi.h

@@ -79,32 +79,46 @@ class WiFiClass : public NetworkInterface {
 		return true;
 	}
 
-	int status() {
-		struct wifi_iface_status status = {0};
-
-		if (net_mgmt(NET_REQUEST_WIFI_IFACE_STATUS, netif, &status,
-					 sizeof(struct wifi_iface_status))) {
-			return WL_NO_SHIELD;
-		}
-
-		if (status.state >= WIFI_STATE_ASSOCIATED) {
-			return WL_CONNECTED;
-		} else {
-			return WL_DISCONNECTED;
-		}
-		return WL_NO_SHIELD;
-	}
+    int status() {
+        if (net_mgmt(NET_REQUEST_WIFI_IFACE_STATUS, netif, &sta_state,
+                sizeof(struct wifi_iface_status))) {
+            return WL_NO_SHIELD;
+        }
+
+	    if (sta_state.state >= WIFI_STATE_ASSOCIATED) {
+            return WL_CONNECTED;
+        } else {
+            return WL_DISCONNECTED;
+        }
+        return WL_NO_SHIELD;
+    }
 
 	int8_t scanNetworks() {
 		// TODO: borrow code from mbed core for scan results handling
 	}
 
+    char* SSID() {
+        if (status() == WL_CONNECTED) {
+            return (char *)sta_state.ssid;
+        }
+        return nullptr;
+    }
+
+    int32_t RSSI() {
+        if (status() == WL_CONNECTED) {
+            return sta_state.rssi;
+        }
+        return 0;
+    }
+
 private:
 	struct net_if *sta_iface = nullptr;
 	struct net_if *ap_iface = nullptr;
 
-	struct wifi_connect_req_params ap_config;
-	struct wifi_connect_req_params sta_config;
+    struct wifi_connect_req_params ap_config;
+    struct wifi_connect_req_params sta_config;
+
+    struct wifi_iface_status sta_state = { 0 };
 };
 
 extern WiFiClass WiFi;