diff --git a/main/usb_cdc.h b/main/usb_cdc.h
new file mode 100644
--- /dev/null
+++ b/main/usb_cdc.h
@@ -0,0 +1,7 @@
+#ifndef _USB_CDC_H_
+#define _USB_CDC_H_
+
+
+void usb_cdc_init(void);
+
+#endif
\ No newline at end of file