#ifndef __USB_MassStorage_H__
#define __USB_MassStorage_H__


//定義了USB Mass Storage 類的一些命令及數據結構

#define SUCCESS 0x00
#define FAIL    0x01
#define ERROR   0x02
//UFI子類命令
#define Format_Unit                 0x04         //格式化單元
#define Inquiry                     0x12         //查詢
#define Star_Stop                   0x1B         //啟動/停止
#define Mode_Select                 0x55         //模式選擇
#define Mode_Sense                  0x5A         //模式判別
#define Medium_Removal              0x1E         //禁止/允許介質移除
#define Read_10                     0x28         //讀10
#define Read_12                     0xA8         //讀12
#define Read_Capacity               0x25         //讀容量
#define Read_Format_capacity        0x23         //讀格式化容量
#define Request_Sense               0x03         //請求判斷
#define Rezero_Unit                 0x01         //歸0
#define Seek_10                     0x2B         //尋道10
#define Send_Diagnostic             0x1D         //發送診斷
#define Test_Unit_Ready             0x00         //測試單元準備
#define Verify                      0x2F         //驗證
#define Write_10                    0x2A         //寫10
#define Write_12                    0xAA         //寫12
#define Write_and_Verify            0x2E         //寫并驗證


//定義命令塊封包(CBW)
typedef struct _CBW
{
 unsigned long dCBWSignature;                    //CBW標志
 unsigned long dCBWTag;                          //命令塊標簽
 unsigned long int dCBWDataTransgerLength;        //數據包大小
 unsigned char bmCBWFlags;                       //D7位表示數據方向，0=out，1=in，其它位保留為0
 unsigned char bCBWLUN;                          //接收該命令的邏輯單元號LUN
 unsigned char bCBWCBLength;                     //表示CBWCB的長度
 unsigned char CBWCB[16];                        //子類命令
}
CBW, * pCBW;

//定義命令狀態封包(CSW)
typedef struct _CSW
{
 unsigned long dCSWSignature;                    //CSW的標志
 unsigned long dCSWTag;                          //命令狀態標志
 unsigned long dCSWDataResidue;                  //表示dCBWDataTransferLenhth字段中主機希望的數據長度與實際發送的數據長度的差額
 unsigned char bCSWStatus;                       //該命令執行的情況       
}
CSW, * pCSW;


#endif