bulkonly.h

这是一段基于arm的usb device mass storage的demo程式

#ifndef __BULK_ONLY__
#define __BULK_ONLY__

//命令块封包结构
typedef struct _COM_BLOCK_WRAPPER {
	DWORD  dCBWSignature;
	DWORD  dCBWTag;
	DWORD  dCBWDataTransferLength;
	INT8U  bmCBWFlags;
	INT8U  bCBWLUN;
	INT8U  bCBWCBLength;
	INT8U  CBWCB[16];
} CBW, *PCBW;

//命令状态封包结构
typedef struct _COM_STATUS_WRAPPER {
	DWORD  dCSWSignature;
	DWORD  dCSWTag;
	DWORD  dCSWDataResidue;
	INT8U  bCSWStatus;
} CSW, *PCSW;

//UFI命令结构
typedef struct _UFI_IN_CBW {
	INT8U  bOpCode;
	INT8U  bLun;
	INT8U  dLBA[4];
	INT8U  reserved;
	INT8U  wLength[2];
	INT8U  reserved0;
	INT8U  reserved1;
	INT8U  reserved2;
} UFI, *PUFI;	

//查询命令的返回值
typedef struct _ACK_INQUIRY {
	INT8U  bDeviceType;
	INT8U  bRMB;
	INT8U  bVerInfo;
	INT8U  bDataFormat;
	INT8U  bAttchInfo;
	INT8U  reserved[3];
	INT8U  vonder[8];
	INT8U  product[16];
	INT8U  Version[4];
} INQUIRY_RETURN, *PINQUIRY_RETURN;

typedef struct _DEV_MODE_PAGE {
	INT8U MediumType[8];
	INT8U ErrPage[12];
	INT8U FlexDiskPage[32];
	INT8U BlockAccessCapacity[12];
	INT8U TimerPage[8];
} DEVICE_MODE_PAGE, *PDEVICE_MODE_PAGE;

extern INT8U  ReqSense[18];

#define MAXLEN 2097152
extern INT8U  LBA[MAXLEN]; //2Mbytes

extern DEVICE_MODE_PAGE DevModePage;
	

#define  BYTE1(VAL)  ((U8)((U32)VAL&0x000000FF))
#define  BYTE2(VAL)  ((U8)(((U32)VAL&0x0000FF00)>>8))
#define  BYTE3(VAL)  ((U8)(((U32)VAL&0x00FF0000)>>16))
#define  BYTE4(VAL)  ((U8)(((U32)VAL&0xFF000000)>>24))

extern CBW  cbw1;
extern CSW  csw1;
extern PUFI pufi1;
extern INT8U query_ret[];
extern void exec_UFI(void);
extern void bulk_only_trans(void);


#endif