4 * Enhanced keyboard features for Windows:
5 * Audio control and System control
7 * http://www.microsoft.com/whdc/archive/w2kbd.mspx
14 #define EXTRA_INTERFACE 3
15 #define EXTRA_ENDPOINT 4
17 #define EXTRA_BUFFER EP_DOUBLE_BUFFER
20 int8_t usb_extra_consumer_send(uint16_t bits);
21 int8_t usb_extra_system_send(uint16_t bits);