diff --git a/commit.ref b/commit.ref
index 44cd306..8f56581 160000
--- a/commit.ref
+++ b/commit.ref
@@ -1 +1 @@
-Subproject commit 44cd306a95d4cd281d72aefacac28906ac6059a6
+Subproject commit 8f56581724aa3290815f263dfd59a7c236a92d26
diff --git a/commit.yml b/commit.yml
index e267a60..2083042 100644
--- a/commit.yml
+++ b/commit.yml
@@ -2,19 +2,13 @@
 branches: {
   }
 fileChange:
-  /Demo:
-    newFile: !uuid 'e22cfe74a69e5db220b90f7e1d4170430352e511'
-    oldFile: !uuid 'b4bb881b8bc34e7ac057d1371048aba495f31fdf'
-  /Demo/AT-Command:
-    newFile: !uuid '3896aebbbe290b42399e70b91d8d29ed55db7d1b'
-    oldFile: !uuid '4214783d085bb1255662d0d9ee3477a2f53d036c'
-  /Demo/AT-Command/at_chat.c:
-    newFile: !uuid '52983d401873aae5210260a8401c7b8060a23e1b'
-    oldFile: !uuid 'f49990476fd6feb35f866821b8a70342839c49d3'
-  /at_chat.c:
-    newFile: !uuid '52983d401873aae5210260a8401c7b8060a23e1b'
-    oldFile: !uuid 'f49990476fd6feb35f866821b8a70342839c49d3'
-gitCommitId: !uuid '44cd306a95d4cd281d72aefacac28906ac6059a6'
+  /at.c:
+    newFile: !uuid '22c5e084f7727c0704eeaaaed8bef61ca7ca2070'
+    oldFile: !uuid '642c83ddcf036bfbd038b7ee42e200d099e644f7'
+  /at.h:
+    newFile: !uuid 'e24640b76d4f02668d826ab81a7b645fe3118e16'
+    oldFile: !uuid 'c75daf901aec26da4b846aaea3a8e348035784f8'
+gitCommitId: !uuid '8f56581724aa3290815f263dfd59a7c236a92d26'
 renames: {
   }
-revisionId: 16
+revisionId: 17