diff --git a/.idea/vcs.xml b/.idea/vcs.xml
index 8af34e7..04a8302 100644
--- a/.idea/vcs.xml
+++ b/.idea/vcs.xml
@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$/Port/Stm32F10x" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/VoiletBspStm32F10x" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/VoiletBspStm32F10x/ThirdParty/LetterShell" vcs="Git" />
   </component>
 </project>
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..06e8d15
--- /dev/null
+++ b/README.md
@@ -0,0 +1,17 @@
+1、克隆仓库
+
+```
+git clone --recurse https://git.linuxacme.com/iorebuild/HelloClionStm32F10x.git
+```
+
+2、将子模块切换为main分支
+
+```
+cd HelloClionStm32F10x
+```
+
+```
+git submodule foreach "git checkout main"
+```
+
+3、