1 files changed, 1 insertions, 0 deletions
diff --git a/stm/usb.h b/stm/usb.h
index 1f263bd07..61931ffc8 100644
--- a/stm/usb.h
+++ b/stm/usb.h
@@ -4,6 +4,7 @@
 
 void pyb_usb_dev_init(void);
 bool usb_vcp_is_enabled(void);
+bool usb_vcp_is_connected(void);
 void usb_vcp_set_interrupt_char(int c);
 int usb_vcp_rx_any(void);
 char usb_vcp_rx_get(void);