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