/**
??******************************************************************************
??*?@file????usb_core.c
??*?@author??MCD?Application?Team
??*?@version?V4.0.0
??*?@date????28-August-2012
??*?@brief???Standard?protocol?processing?（USB?v2.0）
??******************************************************************************
??*?@attention
??*
??*?
©?COPYRIGHT?2012?STMicroelectronics

??*
??*?Licensed?under?MCD-ST?Liberty?SW?License?Agreement?V2?（the?“License“）;
??*?You?may?not?use?this?file?except?in?compliance?with?the?License.
??*?You?may?obtain?a?copy?of?the?License?at:
??*
??*????????http://www.st.com/software_license_agreement_liberty_v2
??*
??*?Unless?required?by?applicable?law?or?agreed?to?in?writing?software?
??*?distributed?under?the?License?is?distributed?on?an?“AS?IS“?BASIS?
??*?WITHOUT?WARRANTIES?OR?CONDITIONS?OF?ANY?KIND?either?express?or?implied.
??*?See?the?License?for?the?specific?language?governing?permissions?and
??*?limitations?under?the?License.
??*
??******************************************************************************
??*/


/*?Includes?------------------------------------------------------------------*/
#include?“usb_lib.h“
#include?“string.h“
#include?“usb_prop.h“

/*?Private?typedef?-----------------------------------------------------------*/
/*?Private?define?------------------------------------------------------------*/
#define?ValBit（VARPlace）????（VAR?&?（1?<#define?SetBit（VARPlace）????（VAR?|=?（1?<#define?ClrBit（VARPlace）????（VAR?&=?（（1?<#define?Send0LengthData（）?{?_SetEPTxCount（ENDP0?0）;?\
????vSetEPTxStatus（EP_TX_VALID）;?\
??}

#define?vSetEPRxStatus（st）?（SaveRState?=?st）
#define?vSetEPTxStatus（st）?（SaveTState?=?st）

#define?USB_StatusIn（）?Send0LengthData（）
#define?USB_StatusOut（）?vSetEPRxStatus（EP_RX_VALID）

#define?StatusInfo0?StatusInfo.bw.bb1?/*?Reverse?bb0?&?bb1?*/
#define?StatusInfo1?StatusInfo.bw.bb0

/*?Private?macro?-------------------------------------------------------------*/
/*?Private?variables?---------------------------------------------------------*/
uint16_t_uint8_t?StatusInfo;

bool?Data_Mul_MaxPacketSize?=?FALSE;
/*?Private?function?prototypes?-----------------------------------------------*/
static?void?DataStageOut（void）;
static?void?DataStageIn（void）;
static?void?NoData_Setup0（void）;
static?void?Data_Setup0（void）;
/*?Private?functions?---------------------------------------------------------*/

/*******************************************************************************
*?Function?Name??:?Standard_GetConfiguration.
*?Description????:?Return?the?current?configuration?variable?address.
*?Input??????????:?Length?-?How?many?bytes?are?needed.
*?Output?????????:?None.
*?Return?????????:?Return?1??if?the?request?is?invalid?when?“Length“?is?0.
*??????????????????Return?“Buffer“?if?the?“Length“?is?not?0.
*********************************************