typedef struct _USBD_DevClassHandleTypeDef
{
uint8_t Speed;
uint32_t classId;
uint32_t NumClasses;
USBD_CompositeElementTypeDef tclasslist[USBD_MAX_SUPPORTED_CLASS];
uint32_t CurrDevDescSz;
uint32_t CurrConfDescSz;
} USBD_DevClassHandleTypeDef;