优化了很多问题。

SystemHandler.py

@@ -0,0 +1,94 @@
+import network
+import gc
+import time
+import machine
+
+import shared_vars
+import system
+
+
+class SystemHandler:
+
+    def get_wifi_list(self,data):
+        """扫描并返回可用的 WiFi 列表"""
+        try:
+            wlan = network.WLAN(network.STA_IF)
+            wlan.active(True)
+            networks = wlan.scan()
+            wifi_list = [{'ssid': net[0].decode('utf-8'), 'rssi': net[3]} for net in networks]
+            print("扫描到的 WiFi 列表:", wifi_list)
+            system.send_text(shared_vars.WS_SOCK,wifi_list)
+            return wifi_list
+        except Exception as e:
+            print(f"获取 WiFi 列表时出错: {e}")
+            return []
+
+    def get_memory_info(self,data):
+        """获取当前内存使用信息"""
+        try:
+            free_mem = gc.mem_free()
+            allocated_mem = gc.mem_alloc()
+            total_mem = free_mem + allocated_mem
+            memory_info = {
+                'free_memory': free_mem,
+                'allocated_memory': allocated_mem,
+                'total_memory': total_mem
+            }
+            print("内存信息:", memory_info)
+            return memory_info
+        except Exception as e:
+            print(f"获取内存信息时出错: {e}")
+            return {}
+
+    def free_memory(self,data):
+        """释放内存并返回释放的内存大小"""
+        try:
+            before_free = gc.mem_free()
+            gc.collect()
+            after_free = gc.mem_free()
+            freed_memory = after_free - before_free
+            print(f"释放了 {freed_memory} 字节的内存")
+            return freed_memory
+        except Exception as e:
+            print(f"释放内存时出错: {e}")
+            return 0
+
+    def connect_to_wifi(self,data):
+        """连接到指定的 WiFi"""
+        ssid, password = data.get('ssid'), data.get('password')
+        try:
+            wlan = network.WLAN(network.STA_IF)
+            wlan.active(True)
+            wlan.connect(ssid, password)
+            start_time = time.time()
+            while not wlan.isconnected():
+                if time.time() - start_time > 10:  # 超时 10 秒
+                    raise TimeoutError("连接 WiFi 超时")
+                time.sleep(1)
+            print(f"成功连接到 WiFi: {ssid}")
+            return wlan.ifconfig()
+        except Exception as e:
+            print(f"连接 WiFi 时出错: {e}")
+            return None
+
+    def get_system_time(self,data):
+        """获取系统时间"""
+        try:
+            current_time = time.localtime()
+            formatted_time = time.strftime("%Y-%m-%d %H:%M:%S", current_time)
+            print("当前系统时间:", formatted_time)
+            return formatted_time
+        except Exception as e:
+            print(f"获取系统时间时出错: {e}")
+            return None
+
+    def restart_device(self,data):
+        """重启设备"""
+        try:
+            print("设备即将重启...")
+            time.sleep(1)
+            machine.reset()
+        except Exception as e:
+            print(f"重启设备时出错: {e}")
+            return None
+        return None