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#ifndef USB_EXTRA_H
#define USB_EXTRA_H 1
/*
* Enhanced keyboard features for Windows:
* Audio control and System control
*
* http://www.microsoft.com/whdc/archive/w2kbd.mspx
*/
#include <stdint.h>
#include "usb.h"
#define EXTRA_INTERFACE 3
#define EXTRA_ENDPOINT 4
#define EXTRA_SIZE 2
#define EXTRA_BUFFER EP_DOUBLE_BUFFER
// Consumer Page(0x0C) Consumer Control(0x01)
#define AUDIO_VOL_UP (1<<0)
#define AUDIO_VOL_DOWN (1<<1)
#define AUDIO_MUTE (1<<2)
// Generic Desktop Page(0x01) System Control(0x80)
#define SYSTEM_POWER_DOWN (1<<0)
#define SYSTEM_SLEEP (1<<1)
#define SYSTEM_WAKE_UP (1<<2)
int8_t usb_extra_audio_send(uint8_t bits);
int8_t usb_extra_system_send(uint8_t bits);
#endif
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