repo2/firmware/native/diskio_image.c @ 47
| 46 | markw | #include "diskio.h"
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#include "stdio.h"
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FILE * disk_image;
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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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DSTATUS stat;
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disk_image = fopen("sd.image","rb");
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stat = RES_OK;
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return stat;
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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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BYTE* 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 res;
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fseek(disk_image,sector*512+sofs,SEEK_SET);
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fread(dest,count,1,disk_image);
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res = RES_OK;
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return res;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Partial Sector */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_writep (const BYTE* buff, DWORD sc)
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{
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DRESULT res;
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if (!buff) {
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if (sc) {
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// Initiate write process
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} else {
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// Finalize write process
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}
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} else {
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// Send data to the disk
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}
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return res;
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}
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