doxygen: add source code part

Signed-off-by: Chen Wang <[email protected]>

Author: unicornx

documentation/Doxyfile

@@ -864,7 +864,13 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = .
+INPUT                  = . \
+                         ../src \
+                         ../include \
+                         ../components/finsh \
+                         ../components/drivers/include/drivers \
+                         ../components/dfs/dfs_v2/src \
+                         ../components/dfs/dfs_v2/include
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
@@ -2219,7 +2225,22 @@ INCLUDE_FILE_PATTERNS  =
 # recursively expanded use the := operator instead of the = operator.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
-PREDEFINED             =
+PREDEFINED             = RT_USING_SEMAPHORE \
+                         RT_USING_MUTEX \
+                         RT_USING_EVENT \
+                         RT_USING_MAILBOX \
+                         RT_USING_MESSAGEQUEUE \
+                         RT_USING_MEMPOOL \
+                         RT_USING_HOOK \
+                         RT_USING_SMALL_MEM \
+                         RT_USING_DEVICE \
+                         RT_USING_MODULE \
+                         RT_USING_DFS \
+                         FINSH_USING_SYMTAB \
+                         FINSH_USING_DESCRIPTION \
+                         RT_USING_FINSH \
+                         RT_USING_HEAP \
+                         RT_USING_MODULE
 
 # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
 # tag can be used to specify a list of macro names that should be expanded. The