#define KEYBOARD_SIZE 8
#define KEYBOARD_BUFFER EP_DOUBLE_BUFFER
+// modifier bits
+#define MOD_LCTRL (1<<0)
+#define MOD_LSHIFT (1<<1)
+#define MOD_LALT (1<<2)
+#define MOD_LGUI (1<<3)
+#define MOD_RCTRL (1<<4)
+#define MOD_RSHIFT (1<<5)
+#define MOD_RALT (1<<6)
+#define MOD_RGUI (1<<7)
+
extern uint8_t keyboard_modifier_keys;
extern uint8_t keyboard_keys[6];