CAN优化

UIShare/GlobalVariable/CANSignalBroadcaster.cs

@@ -69,7 +69,7 @@ namespace UIShare.GlobalVariable
         {
             if (_disposed) return;
 
-            string signalFingerprint = BuildFingerprint(channel);
+            string signalFingerprint = BuildFingerprint(canFingerprint, channel);
             var now = DateTime.Now;
 
             // 获取引用该 CAN 设备的所有作用域
@@ -133,11 +133,12 @@ namespace UIShare.GlobalVariable
         }
 
         /// <summary>
-        /// 生成 CAN 信号的 Fingerprint 格式："CAN:{Channel}"
+        /// 生成 CAN 信号的 Fingerprint 格式："{canDeviceFingerprint}:{channel}"
+        /// canDeviceFingerprint 来自 DeviceManager.ExtractHardwareFingerprint，如 "CAN:0"
         /// </summary>
-        public static string BuildFingerprint(uint channel)
+        public static string BuildFingerprint(string canDeviceFingerprint, uint channel)
         {
-            return $"CAN:{channel}";
+            return $"{canDeviceFingerprint}:{channel}";
         }
 
         public void Dispose()

UIShare/GlobalVariable/DeviceManager.cs

@@ -71,6 +71,20 @@ namespace UIShare.GlobalVariable
 
             return string.Empty;
         }
+
+        /// <summary>
+        /// 获取当前作用域配置的 CAN 设备硬件指纹（与 GlobalInfo.CanPool 的 Key 一致）。
+        /// 如 "CAN:0"，其中 0 是 CANConfig.DeviceIndex。
+        /// </summary>
+        public string GetCanDeviceFingerprint()
+        {
+            if (_systemConfig?.DeviceList == null) return string.Empty;
+            var canConfig = _systemConfig.DeviceList.FirstOrDefault(d =>
+                d != null && d.IsEnabled &&
+                string.Equals(d.ConnectionType, "CAN", StringComparison.OrdinalIgnoreCase));
+            return canConfig != null ? ExtractHardwareFingerprint(canConfig) : string.Empty;
+        }
+
         private void InitDevices()
         {
             DeviceMap = new Dictionary<string, IBaseInterface>(StringComparer.OrdinalIgnoreCase);