diff --git a/gat_stand_fw/usblib/config/usb_endp.c b/gat_stand_fw/usblib/config/usb_endp.c
index de0bebe..ef6e4c4 100644
--- a/gat_stand_fw/usblib/config/usb_endp.c
+++ b/gat_stand_fw/usblib/config/usb_endp.c
@@ -18,7 +18,7 @@
 #include "usb_prop.h"
 #include "usb_pwr.h"
 
-#include "../../user/usb/cdc.h"
+#include "periph/usb/cdc.h"
 
 
 
diff --git a/gat_stand_fw/usblib/config/usb_prop.c b/gat_stand_fw/usblib/config/usb_prop.c
index 39e7daf..a10e721 100644
--- a/gat_stand_fw/usblib/config/usb_prop.c
+++ b/gat_stand_fw/usblib/config/usb_prop.c
@@ -16,7 +16,7 @@
 #include "usb_desc.h"
 #include "usb_pwr.h"
 
-#include "../../user/usb/cdc.h"
+#include "periph/usb/cdc.h"
 
 
 
diff --git a/gat_stand_fw/usblib/config/usb_pwr.h b/gat_stand_fw/usblib/config/usb_pwr.h
index 9c0735c..af44bd1 100644
--- a/gat_stand_fw/usblib/config/usb_pwr.h
+++ b/gat_stand_fw/usblib/config/usb_pwr.h
@@ -26,24 +26,24 @@
 
 typedef enum _RESUME_STATE
 {
-  RESUME_EXTERNAL,
-  RESUME_INTERNAL,
-  RESUME_LATER,
-  RESUME_WAIT,
-  RESUME_START,
-  RESUME_ON,
-  RESUME_OFF,
-  RESUME_ESOF
+    RESUME_EXTERNAL,
+    RESUME_INTERNAL,
+    RESUME_LATER,
+    RESUME_WAIT,
+    RESUME_START,
+    RESUME_ON,
+    RESUME_OFF,
+    RESUME_ESOF
 } RESUME_STATE;
 
 typedef enum _DEVICE_STATE
 {
-  UNCONNECTED,
-  ATTACHED,
-  POWERED,
-  SUSPENDED,
-  ADDRESSED,
-  CONFIGURED
+    UNCONNECTED,
+    ATTACHED,
+    POWERED,
+    SUSPENDED,
+    ADDRESSED,
+    CONFIGURED
 } DEVICE_STATE;
 
 
diff --git a/gat_stand_fw/user/main.c b/gat_stand_fw/user/main.c
index 12acd2e..e4834c2 100644
--- a/gat_stand_fw/user/main.c
+++ b/gat_stand_fw/user/main.c
@@ -5,9 +5,21 @@
  *
  * version 0.0.1
  *
+ *
  * notes:
  *
  * - last 2K of flash memory is reserved for configuration storage
+ *
+ *
+ * project todo:
+ *
+ * - implement config storage
+ *
+ * - implement USB CDC commmand shell
+ *
+ * - when USB is not active, go into super low power state
+ *   - light sensor is only checked once every two seconds or so
+ *   - buttons are on wakeup
  */
 
 #include <ch32v20x.h>
@@ -19,7 +31,7 @@
 #include "periph/rgbled.h"
 #include "periph/rtc.h"
 
-#include "usb/cdc.h"
+#include "periph/usb/cdc.h"
 #include "usb_lib.h"
 
 
diff --git a/gat_stand_fw/user/usb/cdc.c b/gat_stand_fw/user/periph/usb/cdc.c
similarity index 100%
rename from gat_stand_fw/user/usb/cdc.c
rename to gat_stand_fw/user/periph/usb/cdc.c
diff --git a/gat_stand_fw/user/usb/cdc.h b/gat_stand_fw/user/periph/usb/cdc.h
similarity index 100%
rename from gat_stand_fw/user/usb/cdc.h
rename to gat_stand_fw/user/periph/usb/cdc.h