diff --git a/.gitmodules b/.gitmodules
index b62e77a..89753da 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -9,4 +9,7 @@
 	url = zwsd@192.168.1.3:p_chinagoldgroup_hand_acid/blelib_pemkey.git
 [submodule "libznordic"]
 	path = libznordic
-	url = zwsd@192.168.1.3:p_chinagoldgroup_hand_acid/blelib_libznordic.git
\ No newline at end of file
+	url = zwsd@192.168.1.3:p_chinagoldgroup_hand_acid/blelib_libznordic.git
+[submodule "app_protocols"]
+	path = app_protocols
+	url = zwsd@192.168.1.3:p_chinagoldgroup_hand_acid/hand_acid_app_protocols.git
diff --git a/app_protocols b/app_protocols
new file mode 160000
index 0000000..1be600c
--- /dev/null
+++ b/app_protocols
@@ -0,0 +1 @@
+Subproject commit 1be600cfcc00a33264e0a8344acfd22601372236