STM32入门学习笔记之USB读卡器实验2

（2）usb_prop.c文件修改

原文件

修改后文件

（3）memory.h文件修改

（4）mass_mal.h文件修改

（5）memory.c文件修改

（6）usb_bot.c文件修改

（7）mass_mal.c文件重写

#include "platform_config.h"

#include "mass_mal.h"

#include "sdio_sdcard.h"

#include "w25q128.h"

long long Mass_Memory_Size[ MAX_LUN+1 ] ;

u32 Mass_Block_Size[ MAX_LUN+1 ] ;

u32 Mass_Block_Count[ MAX_LUN+1 ] ;

uint16_t MAL_Init( uint8_t lun )

{

u16 Status=MAL_OK ;  

   switch( lun )

   {

          case 0:    break;

          case 1:    break;

          default:return MAL_FAIL ;

   }

   return Status ;

}

uint16_t MAL_Write(uint8_t lun, uint64_t Memory_Offset, uint32_t *Writebuff, uint16_t Transfer_Length)

{

u8 STA ;

   switch( lun )

   {

          //磁盘0为 SPI FLASH盘

          case 0:

                 STA = 0 ;

                 W25QXX_Write( ( u8* )Writebuff, Memory_Offset, Transfer_Length ) ;

                 break ;

          //磁盘1为SD卡

          case 1:

                 STA = SD_WriteDisk( ( u8* )Writebuff, Memory_Offset>>9, Transfer_Length>>9 ) ;

                 break ;

          default:

                 return MAL_FAIL ;

   }

   if( STA!=0 )

          return MAL_FAIL ;

   return MAL_OK ;

}

uint16_t MAL_Read( uint8_t lun, uint64_t Memory_Offset, uint32_t *Readbuff, uint16_t Transfer_Length )

{

u8 STA ;

   switch( lun )

   {

          //磁盘0为 SPI FLASH盘

          case 0 :

                 STA = 0 ;

W25QXX_Read( ( u8* )Readbuff, Memory_Offset, Transfer_Length ) ;

break;

          //磁盘1为SD卡

          case 1 :

STA = SD_ReadDisk( ( u8* )Readbuff, Memory_Offset>>9, Transfer_Length>>9 ) ;

break;

          default:return MAL_FAIL ;

   }

   if( STA!=0 )

          return MAL_FAIL ;

   return MAL_OK ;

}

uint16_t MAL_GetStatus( uint8_t lun )

{

switch( lun )

{

          case 0:return MAL_OK;

          case 1:return MAL_OK;

          default:return MAL_FAIL;

}

}