上机测试优化2

DeviceCommand/Devices/N69200.cs

@@ -109,10 +109,34 @@ namespace DeviceCommand.Devices
         /// 设置电子负载的基本工作模式 (INPut:FUNCtion <mode>)
         /// (支持 CC, CV, CR, CP, CCD, CVD, CRD, CPD, OCP, OPP, ESR, MPP, SWEEP 等)
         /// </summary>
-        public virtual async Task 设置负载模式(string 模式, CancellationToken ct = default)
+        public enum DeviceWorkMode
         {
-            string modeUpper = 模式.ToUpper();
-            await SendAsync($"INPut:FUNCtion {modeUpper}{ScpiDelimiter}", ct);
+            CC,
+            CV,
+            CR,
+            CP,
+            CCD,
+            ESR,
+            AUTO,
+            DISCHARGE,
+            CHARGE,
+            OCP,
+            CVD,
+            CRD,
+            MPP,
+            CVCC,
+            CRCC,
+            CPCC,
+            CVCR,
+            WAVE,
+            SWEEP,
+            OPP,
+            CPD,
+            SZ
+        }
+        public virtual async Task 设置负载模式(DeviceWorkMode 模式, CancellationToken ct = default)
+        {
+            await SendAsync($"INPut:FUNCtion {Enum.GetName(模式)}{ScpiDelimiter}", ct);
         }
 
         /// <summary>