Improve connect_wifi function for better error handling and connection logic

Scripts/networking.py

@@ -2,36 +2,65 @@ import network
 import time
 from secrets import secrets
 
-RECONNECT_COOLDOWN_MS = 60000  # 60 seconds
+def connect_wifi(led=None):
+    """Connect to WiFi using credentials from secrets.py"""
+    try:
+        wlan = network.WLAN(network.STA_IF)
         
-def connect_wifi(led=None, timeout=10):
-    """
-    Connect to WiFi using secrets['ssid'] / secrets['password'].
-    If `led` (machine.Pin) is provided, pulse it once on successful connect.
-    Returns the WLAN object or None on failure.
-    """
-    wifi = network.WLAN(network.STA_IF)
-    wifi.active(True)
+        # Deactivate first if already active (fixes EPERM error)
+        if wlan.active():
+            wlan.active(False)
+            time.sleep(1)
         
-    # print("Connecting to WiFi...", end="")
-    wifi.connect(secrets['ssid'], secrets['password'])
+        wlan.active(True)
+        time.sleep(1)  # Give it time to initialize
+        
+    except OSError as e:
+        print(f"WiFi activation error: {e}")
+        print("Attempting reset...")
+        try:
+            # Force deinit and reinit
+            wlan.deinit()
+            time.sleep(2)
+            wlan = network.WLAN(network.STA_IF)
+            wlan.active(True)
+            time.sleep(1)
+        except Exception as e2:
+            print(f"WiFi reset failed: {e2}")
+            return None
+    
+    if not wlan.isconnected():
+        print('Connecting to WiFi...')
+        try:
+            wlan.connect(secrets['ssid'], secrets['password'])
+        except Exception as e:
+            print(f"Connection attempt failed: {e}")
+            return None
         
         # Wait for connection with timeout
-    max_wait = timeout
+        max_wait = 20
         while max_wait > 0:
-        if wifi.status() < 0 or wifi.status() >= 3:
+            if wlan.isconnected():
                 break
-        max_wait -= 1
-        # print(".", end="")
-        time.sleep(1)
-        
-    if wifi.isconnected():
-        # print("\nConnected! Network config:", wifi.ifconfig())
             if led:
-            led.on()
-            time.sleep(1)
+                led.toggle()
+            time.sleep(0.5)
+            max_wait -= 1
+            print('.', end='')
+        
+        print()
+        
+        if not wlan.isconnected():
+            print('WiFi connection failed!')
+            if led:
                 led.off()
-        return wifi
-    else:
-        # print("\nConnection failed!")
             return None
+    
+    if led:
+        # Single pulse on successful connection
+        led.on()
+        time.sleep(0.5)
+        led.off()
+    
+    print('Connected to WiFi')
+    return wlan