1 files changed, 11 insertions, 1 deletions
diff --git a/app/include/zmk/usb.h b/app/include/zmk/usb.h
index 452fd54..30461de 100644
--- a/app/include/zmk/usb.h
+++ b/app/include/zmk/usb.h
@@ -12,8 +12,18 @@
 #include <zmk/keys.h>
 #include <zmk/hid.h>
 
+enum zmk_usb_conn_state {
+    ZMK_USB_CONN_NONE,
+    ZMK_USB_CONN_POWERED,
+    ZMK_USB_CONN_HID,
+};
+
 enum usb_dc_status_code zmk_usb_get_status();
+enum zmk_usb_conn_state zmk_usb_get_conn_state();
+
+static inline bool zmk_usb_is_powered() { return zmk_usb_get_conn_state() != ZMK_USB_CONN_NONE; }
+static inline bool zmk_usb_is_hid_ready() { return zmk_usb_get_conn_state() == ZMK_USB_CONN_HID; }
 
 #ifdef CONFIG_ZMK_USB
-int zmk_usb_hid_send_report(u8_t *report, size_t len);
+int zmk_usb_hid_send_report(const u8_t *report, size_t len);
 #endif /* CONFIG_ZMK_USB */
 \ No newline at end of file