-#define USBCAN_MESSAGE_FREE (1)
-#define USBCAN_MESSAGE_URB_PENDING (2)
-#define USBCAN_MESSAGE_TERMINATE (3)
-#define USBCAN_MESSAGE_ERROR (4)
-#define USBCAN_MESSAGE_DATA_OK (5)
-#define USBCAN_MESSAGE_TYPE_RX (6)
-#define USBCAN_MESSAGE_TYPE_TX (7)
+#define USBCAN_MESSAGE_TERMINATE (1)
+#define USBCAN_MESSAGE_ERROR (2)
+#define USBCAN_MESSAGE_DATA_OK (3)