实现显示屏。

system.py

@@ -14,13 +14,16 @@ import shared_vars
 
 from SingletonThreadPool import SingletonThreadPool
 
-def connect_wifi(ssid,password):
+def connect_wifi(ssid, password):
     sta_if = network.WLAN(network.STA_IF)
     if not sta_if.isconnected():
         print("正在连接Wi-Fi...")
         sta_if.active(True)
         sta_if.connect(ssid, password)
+        start_time = time.time()
         while not sta_if.isconnected():
+            if time.time() - start_time > 10:  # 超时10秒
+                raise Exception("Wi-Fi连接超时")
             time.sleep(1)
     print("Wi-Fi连接成功", sta_if.ifconfig())
     return sta_if
@@ -120,7 +123,7 @@ def handle_action(action, data):
             print(f"执行 {action} 方法")
             shared_vars.handle_task_id = generate_random_hex()
             #method(data)
-            thread_pool = SingletonThreadPool()
+            
             
             thread_pool.add_task(method,data)
             
@@ -270,6 +273,66 @@ def send_text(sock, message):
         print(f"发送失败：{e}")
         return False
 
+def reset_watchdog():
+    """重置看门狗计时"""
+    shared_vars.watchdog_last_reset = time.time()
+
+def watchdog_thread():
+    """看门狗线程，超过 1 分钟未重置则重启设备"""
+    while True:
+        if time.time() - shared_vars.watchdog_last_reset > 60:  # 超过 1 分钟
+            print("看门狗超时，设备即将重启...")
+            reset()
+        time.sleep(1)
+
+def connect_to_stored_wifi():
+    """
+    尝试连接存储的 WiFi 列表，如果全部失败，则连接默认 WiFi
+    """
+    # 获取存储的 WiFi 列表
+    wifi_list = shared_vars.config_manager.get("wifi.list", [])
+    print("尝试连接存储的 WiFi 列表:", wifi_list)
+
+    wlan = None
+    for wifi in wifi_list:
+        ssid = wifi.get("ssid")
+        password = wifi.get("password")
+        if not ssid or password is None:  # 只检查 SSID 是否有效
+            continue
+
+        print(f"尝试连接 WiFi: {ssid}")
+        try:
+            wlan = network.WLAN(network.STA_IF)
+            wlan.active(False)
+            wlan.active(True)
+            wlan.connect(ssid, password)
+
+            # 设置超时时间为 10 秒
+            start_time = time.time()
+            while not wlan.isconnected():
+                if time.time() - start_time > 10:  # 超时 10 秒
+                    print(f"连接 WiFi {ssid} 超时，尝试下一个")
+                    break
+                time.sleep(1)
+
+            if wlan.isconnected():
+                print(f"成功连接到 WiFi: {ssid}")
+                
+                # 将成功连接的 WiFi 移到列表最前面
+                wifi_list.remove(wifi)
+                wifi_list.insert(0, wifi)
+                shared_vars.config_manager.set("wifi.list", wifi_list)
+                reset_watchdog()  # 重置看门狗
+                return wlan
+        except Exception as e:
+            print(f"连接 WiFi {ssid} 失败: {e}")
+    wlan.active(False)
+    # 如果所有存储的 WiFi 都连接失败，则连接默认 WiFi
+    print("所有存储的 WiFi 都连接失败，尝试连接默认 WiFi")
+    wlan = connect_wifi(shared_vars.WIFI_SSID, shared_vars.WIFI_PASSWORD)
+    reset_watchdog()  # 重置看门狗
+    return wlan
+
 
 def generate_random_hex(length = 32):
     # 初始化一个空的字节数组，用于存储随机字节