diff --git a/homework2/homework2.code-workspace b/homework2/homework2.code-workspace
index 8c192af..82f12fc 100644
--- a/homework2/homework2.code-workspace
+++ b/homework2/homework2.code-workspace
@@ -1,44 +1,45 @@
 {
-    "folders": [
-        {
-            "path": "."
-        }
-    ],
-    "settings": {
-        "files.autoGuessEncoding": true,
-        "C_Cpp.default.configurationProvider": "cl.eide",
-        "C_Cpp.errorSquiggles": "disabled",
-        "files.associations": {
-            ".eideignore": "ignore",
-            "*.a51": "a51",
-            "*.h": "c",
-            "*.c": "c",
-            "*.hxx": "cpp",
-            "*.hpp": "cpp",
-            "*.c++": "cpp",
-            "*.cpp": "cpp",
-            "*.cxx": "cpp",
-            "*.cc": "cpp"
-        },
-        "[yaml]": {
-            "editor.insertSpaces": true,
-            "editor.tabSize": 4,
-            "editor.autoIndent": "advanced"
-        }
-    },
-    "extensions": {
-        "recommendations": [
-            "cl.eide",
-            "keroc.hex-fmt",
-            "xiaoyongdong.srecord",
-            "hars.cppsnippets",
-            "zixuanwang.linkerscript",
-            "redhat.vscode-yaml",
-            "IBM.output-colorizer",
-            "cschlosser.doxdocgen",
-            "ms-vscode.vscode-serial-monitor",
-            "alefragnani.project-manager",
-            "cl.stm8-debug"
-        ]
+  "folders": [
+    {
+      "path": "."
     }
-}
\ No newline at end of file
+  ],
+  "settings": {
+    "files.autoGuessEncoding": true,
+    "C_Cpp.default.configurationProvider": "cl.eide",
+    "C_Cpp.errorSquiggles": "disabled",
+    "files.associations": {
+      ".eideignore": "ignore",
+      "*.a51": "a51",
+      "*.h": "c",
+      "*.c": "c",
+      "*.hxx": "cpp",
+      "*.hpp": "cpp",
+      "*.c++": "cpp",
+      "*.cpp": "cpp",
+      "*.cxx": "cpp",
+      "*.cc": "cpp"
+    },
+    "[yaml]": {
+      "editor.insertSpaces": true,
+      "editor.tabSize": 4,
+      "editor.autoIndent": "advanced"
+    },
+    "cSpell.words": ["ENLED"]
+  },
+  "extensions": {
+    "recommendations": [
+      "cl.eide",
+      "keroc.hex-fmt",
+      "xiaoyongdong.srecord",
+      "hars.cppsnippets",
+      "zixuanwang.linkerscript",
+      "redhat.vscode-yaml",
+      "IBM.output-colorizer",
+      "cschlosser.doxdocgen",
+      "ms-vscode.vscode-serial-monitor",
+      "alefragnani.project-manager",
+      "cl.stm8-debug"
+    ]
+  }
+}
diff --git a/homework2/homework2.pdsprj b/homework2/homework2.pdsprj
index 8cadaba..01040c6 100644
Binary files a/homework2/homework2.pdsprj and b/homework2/homework2.pdsprj differ
diff --git a/homework2/src/homework2.h b/homework2/src/homework2.h
index 1948214..1a7b8d4 100644
--- a/homework2/src/homework2.h
+++ b/homework2/src/homework2.h
@@ -1,3 +1,5 @@
+// homework2.h
+// 这个头文件用于定义每个引脚的功能
 #include <reg52.h>
 
 sbit D1    = P2 ^ 7;
diff --git a/homework2/src/test1.c b/homework2/src/test1.c
index d695d5b..faa60a4 100644
--- a/homework2/src/test1.c
+++ b/homework2/src/test1.c
@@ -1,4 +1,5 @@
-// 点亮一个小灯泡
+// test1.c
+//  点亮一个小灯泡
 #include <reg52.h>
 #include "homework2.h"
 
diff --git a/homework2/src/test2.c b/homework2/src/test2.c
new file mode 100644
index 0000000..e66299e
--- /dev/null
+++ b/homework2/src/test2.c
@@ -0,0 +1,7 @@
+//test2.c
+//让一个LED灯闪烁
+#include <reg52.h>
+#include"homework2.h"
+void main(){
+    
+}
\ No newline at end of file