275 lines
8.4 KiB
C
275 lines
8.4 KiB
C
/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module SKELETON for FatFs (C)ChaN, 2019 */
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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 modules to the FatFs module with a defined API. */
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/*-----------------------------------------------------------------------*/
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#include "ff.h" /* Obtains integer types */
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#include "diskio.h" /* Declarations of disk functions */
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#include "SPI_SD_driver.h"
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#include "diskio.h"
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//#include "flash.h"
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#include "spi.h"
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/* Definitions of physical drive number for each drive */
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#define DEV_RAM 0 /* Example: Map Ramdisk to physical drive 0 */
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#define DEV_MMC 1 /* Example: Map MMC/SD card to physical drive 1 */
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#define DEV_USB 2 /* Example: Map USB MSD to physical drive 2 */
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/*-----------------------------------------------------------------------*/
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/* Get Drive Status */
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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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DSTATUS disk_status (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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//DSTATUS stat;
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//int result;
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uint8_t res=0;
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switch (pdrv) {
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case SD_CARD :
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res = SD_Initialize();
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if(res)//STM32 SPI的bug,在sd卡操作失败的时候如果不执行下面的语句,可能导致SPI读写异常
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{
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SD_SPI_SpeedLow();
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SD_SPI_ReadWriteByte(0xff);//提供额外的8个时钟
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SD_SPI_SpeedHigh();
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}
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break;
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// translate the reslut code here
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//return stat;
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// case DEV_MMC :
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// result = MMC_disk_status();
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// // translate the reslut code here
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// return stat;
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// case DEV_USB :
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// result = USB_disk_status();
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// // translate the reslut code here
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// return stat;
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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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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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uint8_t 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_Initialize();//SD_Initialize()
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if(res)//STM32 SPI的bug,在sd卡操作失败的时候如果不执行下面的语句,可能导致SPI读写异常
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{
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SD_SPI_SpeedLow();
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SD_SPI_ReadWriteByte(0xff);//提供额外的8个时钟
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SD_SPI_SpeedHigh();
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}
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break;
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case EX_FLASH://外部flash
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//SPI_Flash_Init();
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// if(SPI_FLASH_TYPE==W25Q64)FLASH_SECTOR_COUNT=2048*6;//W25Q64
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// else FLASH_SECTOR_COUNT=2048*2; //其他
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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)return STA_NOINIT;
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else return 0; //初始化成功
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_read (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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BYTE *buff, /* Data buffer to store read data */
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LBA_t sector, /* Start sector in LBA */
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UINT count /* Number of sectors to read */
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)
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{
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uint8_t res=0;
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if (!count)return RES_PARERR;//count不能等于0，否则返回参数错误
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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_ReadDisk(buff,sector,count);
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if(res)//STM32 SPI的bug,在sd卡操作失败的时候如果不执行下面的语句,可能导致SPI读写异常
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{
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SD_SPI_SpeedLow();
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SD_SPI_ReadWriteByte(0xff);//提供额外的8个时钟
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SD_SPI_SpeedHigh();
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}
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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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// //SPI_Flash_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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default:
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res=1;
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}
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//处理返回值，将SPI_SD_driver.c的返回值转成ff.c的返回值
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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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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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#if FF_FS_READONLY == 0
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DRESULT disk_write (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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const BYTE *buff, /* Data to be written */
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LBA_t sector, /* Start sector in LBA */
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UINT count /* Number of sectors to write */
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)
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{
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uint8_t res=0;
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if (!count)return RES_PARERR;//count不能等于0，否则返回参数错误
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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_WriteDisk((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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// //SPI_Flash_Write((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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default:
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res=1;
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}
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//处理返回值，将SPI_SD_driver.c的返回值转成ff.c的返回值
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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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/* Miscellaneous Functions */
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/*-----------------------------------------------------------------------*/
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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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SD_CS_ENABLE();
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if(SD_WaitReady()==0)res = RES_OK;
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else res = RES_ERROR;
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SD_CS_DISABLE();
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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 = 8;
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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 = SD_GetSectorCount();
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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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}else res=RES_ERROR;//其他的不支持
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return res;
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}
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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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//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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RTC_TimeTypeDef time;
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RTC_DateTypeDef date;
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RTC_GetTime(RTC_Format_BIN,&time);
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RTC_GetDate(RTC_Format_BIN,&date);
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return ((date.RTC_Year+2000-1980)<<25|
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date.RTC_Month<<21|
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date.RTC_Date<<16|
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time.RTC_Hours<<11|
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time.RTC_Minutes<<5|
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time.RTC_Seconds>>1
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);
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}
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