diff --git a/docs/SCH_Spark-1_V1_0.pdf b/docs/SCH_Spark-1_V1_0.pdf
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diff --git a/rt-thread/tools/cscope.py b/rt-thread/tools/cscope.py
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+#
+# File      : cscope.py
+# This file is part of RT-Thread RTOS
+# COPYRIGHT (C) 2006 - 2015, RT-Thread Development Team
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License along
+#  with this program; if not, write to the Free Software Foundation, Inc.,
+#  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Change Logs:
+# Date           Author       Notes
+# 2015-01-20     Bernard      Add copyright information
+#
+
+import os
+
+def _get_src(project):
+    li = []
+    for group in project:
+        for f in group['src']:
+            li.append(os.path.normpath(f.rfile().abspath))
+    return li
+
+def _get_header_dir(dirp):
+    li = []
+    for root, dirs, files in os.walk(dirp):
+        for d in dirs:
+            fpath = os.path.join(root, d)
+            li.extend(_get_header_dir(fpath))
+
+        for f in files:
+            if f[-2:] == '.h':
+                fpath = os.path.join(root, f)
+                li.append(os.path.normpath(fpath))
+    return li
+
+def _get_header(project):
+    li = []
+    for g in project:
+        for d in g.get('CPPPATH', []):
+            li.extend(_get_header_dir(d))
+    return li
+
+def CscopeDatabase(project):
+    files = set(_get_src(project) + _get_header(project))
+    with open('cscope.files', 'w') as db:
+        db.write('-k\n-q\n')
+        db.write('\n'.join(files))
+        db.flush() # let cscope see the full content
+        os.system('cscope -b')
+