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#ifndef USB_EXTRA_H #define USB_EXTRA_H 1 #include <stdint.h> #include "usb.h" #define EXTRA_INTERFACE 3 #define EXTRA_ENDPOINT 4 #define EXTRA_SIZE 2 #define EXTRA_BUFFER EP_DOUBLE_BUFFER #define AUDIO_VOL_UP (1<<0) #define AUDIO_VOL_DOWN (1<<1) #define AUDIO_MUTE (1<<2) int8_t usb_extra_send(uint8_t bits); #endif