- fixed cmake file

- added function IedModel_getDeviceByIndex

CMakeLists.txt

@@ -91,10 +91,10 @@ include_directories(
     ${CMAKE_CURRENT_LIST_DIR}/src/tls
 )
 
-set(API_HEADERS 
-    src/hal/inc/hal_time.h 
+set(API_HEADERS
+    src/hal/inc/hal_time.h
     src/hal/inc/hal_thread.h
-    src/hal/inc/hal_filesystem.h 
+    src/hal/inc/hal_filesystem.h
     src/hal/inc/hal_ethernet.h
     src/hal/inc/platform_endian.h
     src/common/inc/libiec61850_common_api.h
@@ -162,7 +162,7 @@ configure_file(
 )
 
 if(BUILD_EXAMPLES)
-    add_subdirectory(examples)
+    add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/examples)
 endif(BUILD_EXAMPLES)
 
 add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/src)

src/iec61850/inc/iec61850_model.h

@@ -468,6 +468,17 @@ IedModel_getModelNodeByShortAddress(IedModel* self, uint32_t shortAddress);
 LogicalDevice*
 IedModel_getDeviceByInst(IedModel* self, const char* ldInst);
 
+/**
+ * \brief Lookup logical device (LD) instance by index
+ *
+ * \param self IedModel instance
+ * \param index the index of the LD in the range (0 .. number of LDs - 1)
+ *
+ * \return the corresponding LogicalDevice* object or NULL if the index is out of range
+ */
+LogicalDevice*
+IedModel_getDeviceByIndex(IedModel* self, int index);
+
 
 /**
  * \brief Lookup a logical node by name that is part of the given logical device

src/iec61850/server/model/model.c

@@ -75,12 +75,12 @@ IedModel_setAttributeValuesToNull(IedModel* iedModel)
 
 
 int
-IedModel_getLogicalDeviceCount(IedModel* iedModel)
+IedModel_getLogicalDeviceCount(IedModel* self)
 {
-	if (iedModel->firstChild == NULL)
+	if (self->firstChild == NULL)
 		return 0;
 
-	LogicalDevice* logicalDevice = iedModel->firstChild;
+	LogicalDevice* logicalDevice = self->firstChild;
 
 	int ldCount = 1;
 
@@ -165,6 +165,27 @@ IedModel_getDeviceByInst(IedModel* self, const char* ldInst)
     return NULL;
 }
 
+
+LogicalDevice*
+IedModel_getDeviceByIndex(IedModel* self, int index)
+{
+    LogicalDevice* logicalDevice = self->firstChild;
+
+    int currentIndex = 0;
+
+    while (logicalDevice) {
+
+        if (currentIndex == index)
+            return logicalDevice;
+
+        currentIndex++;
+
+        logicalDevice = (LogicalDevice*) logicalDevice->sibling;
+    }
+
+    return NULL;
+}
+
 static DataAttribute*
 ModelNode_getDataAttributeByMmsValue(ModelNode* self, MmsValue* value)
 {

src/vs/libiec61850-wo-goose.def

@@ -579,4 +579,5 @@ EXPORTS
     ClientGooseControlBlock_setDstAddress
     CDC_VSS_create
     CDC_VSG_create
-    Timestamp_createFromByteArray
+    Timestamp_createFromByteArray
+    IedModel_getDeviceByIndex

src/vs/libiec61850.def

@@ -705,4 +705,5 @@ EXPORTS
     SVSubscriber_ASDU_getQuality
     SVPublisher_ASDU_addQuality
     SVPublisher_ASDU_setQuality
-    Timestamp_createFromByteArray
+    Timestamp_createFromByteArray
+    IedModel_getDeviceByIndex