/*-----------------------------------------------------------------------*/ /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2013 */ /*-----------------------------------------------------------------------*/ /* If a working storage control module is available, it should be */ /* attached to the FatFs via a glue function rather than modifying it. */ /* This is an example of glue functions to attach various exsisting */ /* storage control module to the FatFs module with a defined API. */ /*-----------------------------------------------------------------------*/ #include "diskio.h" /* FatFs lower layer API */ #include "tfcard_sdio.h" #include "w25qxx.h" #include "malloc.h" #include "usbhost_user.h" ////////////////////////////////////////////////////////////////////////////////// #define SD_CARD 0 //SD卡,卷标为0 #define EX_FLASH 1 //外部flash,卷标为1 #define USB_DISK 2 //U盘,卷标为2 #define FLASH_SECTOR_SIZE 512 u16 FLASH_SECTOR_COUNT=2048*10; //W25Q1218,前10M字节给FATFS占用 #define FLASH_BLOCK_SIZE 8 //每个BLOCK有8个扇区 //初始化磁盘 DSTATUS disk_initialize ( BYTE pdrv /* Physical drive nmuber (0..) */ ) { u8 res=0; switch(pdrv) { case SD_CARD://SD卡 res = SD_Init(); break; case EX_FLASH://外部FLASH W25QXX_Init(); FLASH_SECTOR_COUNT=2048*10; //W25Q1218,前10M字节给FATFS用 case USB_DISK://U盘 if(USBH_UDISK_Status())return 0; //U盘连接成功,则返回1.否则返回0 else return 1; default: res=1; } if(res)return STA_NOINIT; else return 0; //初始化成功 } //获得磁盘状态 DSTATUS disk_status ( BYTE pdrv /* Physical drive nmuber (0..) */ ) { return 0; } /**************************************************************************** * 名 称: DRESULT disk_read () * 功 能：读扇区 * 入口参数：drv:磁盘编号0~9 buff:数据接收缓冲首地址 sector:扇区地址 count:需要读取的扇区数 * 返回参数： * 说 明：移植文件系统要调用SD卡和W25Qxx的读扇区函数 ****************************************************************************/ DRESULT disk_read ( BYTE pdrv, /* Physical drive nmuber (0..) */ BYTE *buff, /* Data buffer to store read data */ DWORD sector, /* Sector address (LBA) */ UINT count /* Number of sectors to read (1..128) */ ) { u8 res=0; if (!count)return RES_PARERR; switch(pdrv) { case SD_CARD: //SD卡 res=SD_ReadSDisk(buff,sector,count); break; case EX_FLASH: //外部FLASH for(;count>0;count--) { W25QXX_Read(buff,sector*FLASH_SECTOR_SIZE,FLASH_SECTOR_SIZE); sector++; buff+=FLASH_SECTOR_SIZE; } res=0; break; case USB_DISK://U盘 res=USBH_UDISK_Read(buff,sector,count); break; default: res=1; } if(res==0x00)return RES_OK; else return RES_ERROR; } /**************************************************************************** * 名 称: DRESULT disk_write () * 功 能：写扇区 * 入口参数：drv:磁盘编号0~9 buff:数据接收缓冲首地址 sector:扇区地址 count:需要写入的扇区数 * 返回参数： * 说 明：移植文件系统要调用SD卡和W25Qxx的写扇区函数 ****************************************************************************/ #if _USE_WRITE DRESULT disk_write ( BYTE pdrv, /* Physical drive nmuber (0..) */ const BYTE *buff, /* Data to be written */ DWORD sector, /* Sector address (LBA) */ UINT count /* Number of sectors to write (1..128) */ ) { u8 res=0; if (!count)return RES_PARERR; switch(pdrv) { case SD_CARD://SD卡 res=SD_WriteSDisk((u8*)buff,sector,count); break; case EX_FLASH://外部FLASH for(;count>0;count--) { W25QXX_SectorWrite((u8*)buff,sector*FLASH_SECTOR_SIZE,FLASH_SECTOR_SIZE); sector++; buff+=FLASH_SECTOR_SIZE; } res=0; break; case USB_DISK://U盘 res=USBH_UDISK_Write((u8*)buff,sector,count); break; default: res=1; } if(res == 0x00)return RES_OK; else return RES_ERROR; } #endif /**************************************************************************** * 名 称: DRESULT disk_ioctl () * 功 能：其他表参数的获得 * 入口参数：drv:磁盘编号0~9 ctrl:控制代码 buff:发送/接收缓冲区指针 * 返回参数： * 说 明： ****************************************************************************/ #if _USE_IOCTL DRESULT disk_ioctl ( BYTE pdrv, /* Physical drive nmuber (0..) */ BYTE cmd, /* Control code */ void *buff /* Buffer to send/receive control data */ ) { DRESULT res; if(pdrv==SD_CARD)//SD卡 { switch(cmd) { case CTRL_SYNC: res = RES_OK; break; case GET_SECTOR_SIZE: *(DWORD*)buff = 512; res = RES_OK; break; case GET_BLOCK_SIZE: *(WORD*)buff = SDCardInfo.CardBlockSize; res = RES_OK; break; case GET_SECTOR_COUNT: *(DWORD*)buff = SDCardInfo.CardCapacity/512; res = RES_OK; break; default: res = RES_PARERR; break; } }else if(pdrv==EX_FLASH) //外部FLASH { switch(cmd) { case CTRL_SYNC: res = RES_OK; break; case GET_SECTOR_SIZE: *(WORD*)buff = FLASH_SECTOR_SIZE; res = RES_OK; break; case GET_BLOCK_SIZE: *(WORD*)buff = FLASH_BLOCK_SIZE; res = RES_OK; break; case GET_SECTOR_COUNT: *(DWORD*)buff = FLASH_SECTOR_COUNT; res = RES_OK; break; default: res = RES_PARERR; break; } } else if(pdrv==USB_DISK) //U盘 { switch(cmd) { case CTRL_SYNC: res = RES_OK; break; case GET_SECTOR_SIZE: *(WORD*)buff=512; res = RES_OK; break; case GET_BLOCK_SIZE: *(WORD*)buff=512; res = RES_OK; break; case GET_SECTOR_COUNT: *(DWORD*)buff=USBH_MSC_Param.MSCapacity; res = RES_OK; break; default: res = RES_PARERR; break; } } else res=RES_ERROR;//其他的不支持 return res; } #endif //获得时间 //User defined function to give a current time to fatfs module */ //31-25: Year(0-127 org.1980), 24-21: Month(1-12), 20-16: Day(1-31) */ //15-11: Hour(0-23), 10-5: Minute(0-59), 4-0: Second(0-29 *2) */ DWORD get_fattime (void) { return 0; } //动态分配内存 void *ff_memalloc (UINT size) { return (void*)Mem_malloc(INSRAM,size); } //释放内存 void ff_memfree (void* mf) { Mem_free(INSRAM,mf); }