120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
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/*-----------------------------------------------------------------------*/
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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 "../sdmmc.h"
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/* Definitions of physical drive number for each media */
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#define ATA 0
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#define MMC 1
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#define USB 2
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static DSTATUS status;
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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 (0..) */
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)
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{
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int result = sdmmc_sdcard_init();
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if (result)
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{
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status = STA_NOINIT;
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}
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status = RES_OK;
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return status;
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}
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/*-----------------------------------------------------------------------*/
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/* Get Disk Status */
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/*-----------------------------------------------------------------------*/
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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 status;
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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 (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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if (!status)
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{
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switch(pdrv){
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case 0:
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if (sdmmc_sdcard_readsectors(sector,count,(u8*)buff))
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return RES_PARERR;
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break;
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}
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return RES_OK;
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}
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return RES_NOTRDY;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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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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if (!status)
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{
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switch(pdrv){
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case 0:
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if (sdmmc_sdcard_writesectors(sector,count,(u8*)buff))
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return RES_PARERR;
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break;
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}
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return RES_OK;
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}
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return RES_NOTRDY;
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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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#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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if (!status)
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return RES_OK;
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return RES_NOTRDY;
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}
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#endif
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