Added API to output objects for priority-array property value inspection. (#1096)

src/bacnet/basic/object/mso.c

@@ -447,6 +447,52 @@ bool Multistate_Output_Present_Value_Set(
     return status;
 }
 
+/**
+ * @brief Determine if a priority-array slot is relinquished
+ * @param object_instance [in] BACnet network port object instance number
+ * @param  priority - priority-array index value 1..16
+ * @return true if the priority-array slot is relinquished
+ */
+bool Multistate_Output_Priority_Array_Relinquished(
+    uint32_t object_instance, unsigned priority)
+{
+    bool status = false;
+    struct object_data *pObject;
+
+    pObject = Keylist_Data(Object_List, object_instance);
+    if (pObject) {
+        if ((priority >= 1) && (priority <= BACNET_MAX_PRIORITY)) {
+            status = pObject->Relinquished[priority - 1];
+        }
+    }
+
+    return status;
+}
+
+/**
+ * @brief For a given object instance-number, determines the
+ *  priority-array value
+ * @param object_instance - object-instance number
+ * @param priority - priority-array index value 1..16
+ * @return priority-array value of the object, or 0 if
+ *  object not found, or priority out of range, or relinquished
+ */
+uint32_t Multistate_Output_Priority_Array_Value(
+    uint32_t object_instance, unsigned priority)
+{
+    uint32_t value = 0;
+    struct object_data *pObject;
+
+    pObject = Keylist_Data(Object_List, object_instance);
+    if (pObject) {
+        if ((priority >= 1) && (priority <= BACNET_MAX_PRIORITY)) {
+            value = pObject->Priority_Array[priority - 1];
+        }
+    }
+
+    return value;
+}
+
 /**
  * @brief For a given object instance-number, relinquishes the present-value
  * @param  object_instance - object-instance number of the object