diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.c b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.c
new file mode 100644
index 000000000..46e58b361
--- /dev/null
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.c
@@ -0,0 +1,6 @@
+#include "usb_osal.h"
+
+
+int usb_wait_until(int msec){
+    return 0;
+}
diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.h b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.h
index 052c39126..5ccb9a2cb 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.h
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/osal/usb_osal.h
@@ -3,6 +3,7 @@
 
 
 
+int usb_wait_until(int msec);
 
 
 #endif