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60 lines
1.7 KiB
60 lines
1.7 KiB
/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module skeleton for Petit FatFs (C)ChaN, 2009 */
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/*-----------------------------------------------------------------------*/
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#include "diskio.h"
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#include <string.h>
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#include <LUFA/Drivers/USB/Class/MassStorage.h>
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#include "../DataflashManager.h"
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#include "../../DiskHost.h"
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/*-----------------------------------------------------------------------*/
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/* Initialize Disk Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (void)
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{
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return RES_OK;
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}
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/*-----------------------------------------------------------------------*/
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/* Read Partial Sector */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_readp (
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void* dest, /* Pointer to the destination object */
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DWORD sector, /* Sector number (LBA) */
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WORD sofs, /* Offset in the sector */
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WORD count /* Byte count (bit15:destination) */
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)
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{
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DRESULT ErrorCode = RES_OK;
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uint8_t BlockTemp[512];
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if (USB_CurrentMode == USB_MODE_HOST)
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{
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#if defined(USB_CAN_BE_HOST)
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if (USB_HostState != HOST_STATE_Configured)
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ErrorCode = RES_NOTRDY;
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else if (MS_Host_ReadDeviceBlocks(&DiskHost_MS_Interface, 0, sector, 1, 512, BlockTemp))
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ErrorCode = RES_ERROR;
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MS_Host_ReadDeviceBlocks(&DiskHost_MS_Interface, 0, sector, 1, 512, BlockTemp);
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#endif
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}
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else
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{
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#if defined(USB_CAN_BE_DEVICE)
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DataflashManager_ReadBlocks_RAM(sector, 1, BlockTemp);
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#endif
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}
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memcpy(dest, &BlockTemp[sofs], count);
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return ErrorCode;
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}
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