WiFi changes again

gauge.py

@@ -524,46 +524,62 @@ _DEVICE = {
 _wifi_check_interval_ms = 30000
 _last_wifi_check = 0
 _wifi_sta = None
+_WIFI_CONNECT_ATTEMPTS = 3
 
 
-def connect_wifi(ssid, password, timeout_s=15, force_reconnect=False):
+def _reset_wifi_interface():
     global _wifi_sta
     _wifi_sta = network.WLAN(network.STA_IF)
-
-    if force_reconnect:
     try:
         _wifi_sta.disconnect()
     except Exception:
         pass
     try:
         _wifi_sta.active(False)
-            utime.sleep_ms(250)
+        utime.sleep_ms(500)
     except Exception:
         pass
-
     _wifi_sta.active(True)
+    utime.sleep_ms(500)
+
+
+def connect_wifi(ssid, password, timeout_s=15, force_reconnect=False):
+    global _wifi_sta
+    _wifi_sta = network.WLAN(network.STA_IF)
+
     if _wifi_sta.isconnected() and not force_reconnect:
         ip, mask, gw, dns = _wifi_sta.ifconfig()
         info("WiFi already connected")
         info(f"  IP:{ip}  mask:{mask}  gw:{gw}  dns:{dns}")
         utime.sleep_ms(250)
         return ip
-    info(f"WiFi connecting to '{ssid}' ...")
+
+    last_error = None
+    for attempt in range(_WIFI_CONNECT_ATTEMPTS):
+        info(f"WiFi connecting to '{ssid}' (attempt {attempt + 1}/{_WIFI_CONNECT_ATTEMPTS}) ...")
+        _reset_wifi_interface()
+        try:
             _wifi_sta.connect(ssid, password)
             deadline = utime.time() + timeout_s
             while not _wifi_sta.isconnected():
                 if utime.time() > deadline:
-            log_err(f"WiFi connect timeout after {timeout_s}s")
                     raise OSError("WiFi connect timeout")
-        utime.sleep_ms(200)
+                utime.sleep_ms(250)
+
             ip, mask, gw, dns = _wifi_sta.ifconfig()
             mac = ":".join(f"{b:02x}" for b in _wifi_sta.config("mac"))
             info("WiFi connected!")
             info(f"  SSID    : {ssid}")
             info(f"  MAC     : {mac}")
             info(f"  IP      : {ip}  mask:{mask}  gw:{gw}  dns:{dns}")
-    utime.sleep_ms(250)
+            utime.sleep_ms(500)
             return ip
+        except Exception as e:
+            last_error = e
+            log_err(f"WiFi connect attempt {attempt + 1} failed: {e}")
+            utime.sleep_ms(1000)
+
+    raise last_error
 
 
 def check_wifi():
@@ -581,15 +597,7 @@ def check_wifi():
 
     log_err("WiFi lost connection — attempting reconnect...")
     try:
-        _wifi_sta.active(True)
-        _wifi_sta.connect(WIFI_SSID, WIFI_PASSWORD)
-        deadline = utime.time() + 15
-        while not _wifi_sta.isconnected():
-            if utime.time() > deadline:
-                log_err("WiFi reconnect timeout")
-                return
-            utime.sleep_ms(200)
-        ip, mask, gw, dns = _wifi_sta.ifconfig()
+        ip = connect_wifi(WIFI_SSID, WIFI_PASSWORD, timeout_s=15, force_reconnect=True)
         info(f"WiFi reconnected! IP:{ip}")
     except Exception as e:
         log_err(f"WiFi reconnect failed: {e}")