CAN设置添加

UIShare/GlobalVariable/ConfigService.cs

@@ -1,7 +1,10 @@
 using System;
+using System.Collections.ObjectModel;
 using System.IO;
+using System.Linq;
 using Newtonsoft.Json;
 using Logger;
+using UIShare.UIViewModel;
 
 namespace UIShare.GlobalVariable
 {
@@ -44,6 +47,7 @@ namespace UIShare.GlobalVariable
             {
                 // 如果不存在，创建一个带 Title 的默认配置并保存
                 var defaultConfig = new SystemConfig { Title = title };
+                EnsureDefaultCanDevice(defaultConfig);
                 Save(defaultConfig);
                 return defaultConfig;
             }
@@ -58,12 +62,16 @@ namespace UIShare.GlobalVariable
                         TypeNameHandling = TypeNameHandling.All
                     });
 
-                    return config ?? new SystemConfig { Title = title };
+                    config ??= new SystemConfig { Title = title };
+                    EnsureDefaultCanDevice(config);
+                    return config;
                 }
                 catch (Exception ex)
                 {
                     LoggerHelper.ErrorWithNotify(title, $"格子 [{title}] 配置加载失败: {ex.Message}");
-                    return new SystemConfig { Title = title };
+                    var fallback = new SystemConfig { Title = title };
+                    EnsureDefaultCanDevice(fallback);
+                    return fallback;
                 }
             }
         }
@@ -98,5 +106,34 @@ namespace UIShare.GlobalVariable
                 }
             }
         }
+
+        /// <summary>
+        /// 确保配置中至少包含一个 CAN 设备（对应 SystemConfig.CANFD）。
+        /// 旧配置或空配置会自动升级，使用户在设置界面能看到 CAN 设备。
+        /// </summary>
+        public static void EnsureDefaultCanDevice(SystemConfig config)
+        {
+            if (config.DeviceList == null)
+            {
+                config.DeviceList = new ObservableCollection<DeviceInfoVM>();
+            }
+
+            bool hasCan = config.DeviceList.Any(d =>
+                string.Equals(d?.ConnectionType, "CAN", StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(d?.DeviceType, "ZLGCANFD", StringComparison.OrdinalIgnoreCase));
+
+            if (!hasCan)
+            {
+                config.DeviceList.Add(new DeviceInfoVM
+                {
+                    DeviceName = "CAN",
+                    DeviceType = "ZLGCANFD",
+                    Remark = "周立功 CANFD 接口卡",
+                    ConnectionType = "CAN",
+                    IsEnabled = true,
+                    IsConnected = false
+                });
+            }
+        }
     }
 }