massstorage.h

基於MCU c51/8051 讀寫SD/MMC card 再以USB 傳回電腦的範例程序

/* ELEC254 Group32 USB SD Card Reader */

#ifndef __USB_MassStorage_H__
#define __USB_MassStorage_H__


#define USB Mass Storage command and structure

#define SUCCESS 0x00
#define FAIL    0x01
#define ERROR   0x02

//UFI subset command
#define Format_Unit                 0x04         //format a unit
#define Inquiry                     0x12         //inquiry
#define Star_Stop                   0x1B         //start orstop
#define Mode_Select                 0x55         //Mode Select
#define Mode_Sense                  0x5A         //Mode Sense
#define Medium_Removal              0x1E         //Allow or disallow remove medium
#define Read_10                     0x28         //read 10
#define Read_12                     0xA8         //read 12
#define Read_Capacity               0x25         //read capacity
#define Read_Format_capacity        0x23         //read format capacity
#define Request_Sense               0x03         //request sense
#define Rezero_Unit                 0x01         //set 0
#define Seek_10                     0x2B         //seek 10
#define Send_Diagnostic             0x1D         //send diagnostic
#define Test_Unit_Ready             0x00         //test unit ready
#define Verify                      0x2F         //verify
#define Write_10                    0x2A         //write 10
#define Write_12                    0xAA         //write 12
#define Write_and_Verify            0x2E         //write and verify

//#define command packet (CBW)

typedef struct _CBW
{
 unsigned long dCBWSignature;                    //CBW signature
 unsigned long dCBWTag;                          //command signature
 unsigned long int dCBWDataTransgerLength;       //data packet size
 unsigned char bmCBWFlags;                       //D7 direction 0=out,1=in, reserve = 0
 unsigned char bCBWLUN;                          //receive command logic LUN
 unsigned char bCBWCBLength;                     //CBWCB length
 unsigned char CBWCB[16];                        //sub command
}
CBW,  pCBW;

#define command state packet (CSW)

typedef struct _CSW
{
 unsigned long dCSWSignature;                    //CSW signature
 unsigned long dCSWTag;                          //command state signature
 unsigned long dCSWDataResidue;                  //dCBWDataTransferLenhth repesent the data length diifferent between host ans slave
 unsigned char bCSWStatus;                       //command execute state       
}
CSW,  pCSW;


#endif