Check if ssid, password, ip and gateway are ""

src/wifi.py

@@ -2,12 +2,12 @@ import network
 from time import sleep
 
 def connect(ssid, password, ip, gateway):
-    if ssid is None or password is None:
+    if ssid == "" or password == "":
         print("Missing ssid or password")
         return None
     try:
         sta_if = network.WLAN(network.STA_IF)
-        if ip is not None and gateway is not None:
+        if ip != "" and gateway != "":
             sta_if.ifconfig((ip, '255.255.255.0', gateway, '1.1.1.1'))
         if not sta_if.isconnected():
             print('connecting to network...')