本帖最后由 740071911 于 2022-1-7 09:12 编辑
对FatFS移植，主要是将diskio.c接口和ffconf.h的配置
先来看看效果：
因为目录比较多，分两张截图
这里是目录的下半截图
接口文件diskio.c的移植
- /* Includes ------------------------------------------------------------------*/
- #include "diskio.h"
- #include "ffconf.h"
- #include "spi_sd.h"
- /* Private typedef -----------------------------------------------------------*/
- /* Private define ------------------------------------------------------------*/
- #define BLOCK_SIZE 512 /* Block Size in Bytes */
- /* Private variables ---------------------------------------------------------*/
- /* Private function prototypes -----------------------------------------------*/
- /* Private functions ---------------------------------------------------------*/
- /**
- * [url=home.php?mod=space&uid=247401]@brief[/url] Initializes a Disk
- * @param pdrv: Physical drive number
- * @retval DSTATUS: Operation status
- */
- DSTATUS disk_initialize(BYTE pdrv)
- {
- SD_Error res = SD_RESPONSE_FAILURE;
- res = SD_Init();
- return ((DSTATUS)res);
- }
- /**
- * [url=home.php?mod=space&uid=247401]@brief[/url] Gets Disk Status
- * @param pdrv: Physical drive number
- * @retval DSTATUS: Operation status
- */
- DSTATUS disk_status (BYTE pdrv)
- {
- if (pdrv) return STA_NOINIT; /* Supports only single drive */
- return 0;
- }
- /**
- * @brief Reads Sector
- * @param pdrv: Physical drive number
- * @param *buff: Data buffer to store read data
- * @param sector: Sector address (LBA)
- * @param count: Number of sectors to read
- * @retval DRESULT: Operation result
- */
- DRESULT disk_read (BYTE pdrv, BYTE*buff, DWORD sector, UINT count)
- {
- SD_ReadBlock(buff, sector << 9, BLOCK_SIZE);
- return RES_OK;
- }
- /**
- * @brief Writes Sector
- * @param pdrv: Physical drive number
- * @param *buff: Data to be written
- * @param sector: Sector address (LBA)
- * @param count: Number of sectors to write
- * @retval DRESULT: Operation result
- * [url=home.php?mod=space&uid=536309]@NOTE[/url] The FatFs module will issue multiple sector transfer request
- * (count > 1) to the disk I/O layer. The disk function should process
- * the multiple sector transfer properly Do. not translate it into
- * multiple single sector transfers to the media, or the data read/write
- * performance may be drasticaly decreased.
- */
- #if _USE_WRITE == 1
- DRESULT disk_write (BYTE pdrv, const BYTE* buff, DWORD sector, UINT count)
- {
- SD_WriteBlock((BYTE *)buff, sector << 9, BLOCK_SIZE);
-
- return RES_OK;
- }
- #endif /* _USE_WRITE == 1 */
- /**
- * @brief Get current time
- * @param none
- * @retval DWORD: Current time
- */
- DWORD get_fattime ()
- {
- return ((2006UL-1980) << 25) /* Year = 2006 */
- | (2UL << 21) /* Month = Feb */
- | (9UL << 16) /* Day = 9 */
- | (22U << 11) /* Hour = 22 */
- | (30U << 5) /* Min = 30 */
- | (0U >> 1) /* Sec = 0 */
- ;
- }
- /*-----------------------------------------------------------------------*/
- /* Miscellaneous Functions */
- /*-----------------------------------------------------------------------*/
- /**
- * @brief I/O control operation
- * @param pdrv: Physical drive number
- * @param cmd: Control code
- * @param *buff: Buffer to send/receive control data
- * @retval DRESULT: Operation result
- */
- #if _USE_IOCTL != 0
- DRESULT disk_ioctl(BYTE pdrv, BYTE cmd, void *buff)
- {
- DRESULT res = RES_OK;
- switch (cmd)
- {
- /* Get number of sectors on the disk (DWORD) */
- case GET_SECTOR_COUNT :
- *(DWORD*)buff = 131072; /* 4*1024*32 = 131072 */
- res = RES_OK;
- break;
-
- /* Get R/W sector size (WORD) */
- case GET_SECTOR_SIZE :
- *(WORD*)buff = BLOCK_SIZE;
- res = RES_OK;
- break;
-
- /* Get erase block size in unit of sector (DWORD) */
- case GET_BLOCK_SIZE :
- *(DWORD*)buff = 32;
- res = RES_OK;
- }
- return res;
- }
- #endif /* _USE_IOCTL == 1 */
main.c主函数的实现：
同样，最后附上demo
SD_FATFS_R0.10.rar
(714.47 KB, 下载次数: 19)
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