Fixes issue where if DMPS audio min and max levels were set to the same value, a divide by zero exception would occur. Adds try-catch to output card constructor so single output card failing won't break all routing.

essentials-framework/Essentials DM/Essentials_DM/Chassis/DmpsAudioOutputController.cs

@@ -411,19 +411,28 @@ namespace PepperDash.Essentials.DM
         public void SetVolumeScaled(ushort level)
         {
             Debug.Console(2, Debug.ErrorLogLevel.None, "Scaling DMPS volume:{0} level:{1} min:{2} max:{3}", Output.Name, level.ToString(), MinLevel.ToString(), MaxLevel.ToString());
+            if (ushort.MaxValue + MinLevel != 0)
+            {
                 VolumeLevelInput = (ushort)(level * (MaxLevel - MinLevel) / ushort.MaxValue + MinLevel);
                 if (EnableVolumeSend == true)
                 {
                     Level.UShortValue = VolumeLevelInput;
                 }
             }
+        }
 
         public ushort ScaleVolumeFeedback(ushort level)
         {
             short signedLevel = (short)level;
             Debug.Console(2, Debug.ErrorLogLevel.None, "Scaling DMPS volume:{0} feedback:{1} min:{2} max:{3}", Output.Name, signedLevel.ToString(), MinLevel.ToString(), MaxLevel.ToString());
+
+            if (MaxLevel - MinLevel != 0)
+            {
                 return (ushort)((signedLevel - MinLevel) * ushort.MaxValue / (MaxLevel - MinLevel));
             }
+            else
+                return (ushort)MinLevel;
+        }
 
         public void SendScaledVolume(bool pressRelease)
         {

essentials-framework/Essentials DM/Essentials_DM/Chassis/DmpsRoutingController.cs

@@ -480,6 +480,8 @@ namespace PepperDash.Essentials.DM
         void SetupOutputCards()
         {
             foreach (var card in Dmps.SwitcherOutputs)
+            {
+                try
                 {
                     Debug.Console(1, this, "Output Card Type: {0}", card.CardInputOutputType);
 
@@ -504,13 +506,13 @@ namespace PepperDash.Essentials.DM
                         {
                             if (outputCard.AudioOutFeedback != null)
                             {
-                            return (ushort) outputCard.AudioOutFeedback.Number;
+                                return (ushort)outputCard.AudioOutFeedback.Number;
                             }
                             return 0;
                         }
                         catch (NotSupportedException)
                         {
-                        return (ushort) outputCard.AudioOutSourceFeedback;
+                            return (ushort)outputCard.AudioOutSourceFeedback;
                         }
                     });
 
@@ -545,6 +547,11 @@ namespace PepperDash.Essentials.DM
 
                     AddOutputCard(outputCard.Number, outputCard);
                 }
+                catch (Exception ex)
+                {
+                    Debug.LogError(Debug.ErrorLogLevel.Error, string.Format("DMPS Controller exception creating output card: {0}", ex));
+                }
+            }
         }
 
         /// <summary>