mirror of
https://github.com/dimoniche/solarium.vlad.git
synced 2026-01-30 21:13:31 +03:00
133 lines
3.3 KiB
C
133 lines
3.3 KiB
C
#include <includes.h>
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#include "diskio.h"
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#include "sdcard.h"
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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 drv /* Drive number (always 0) */
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)
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{
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if (drv) return STA_NOINIT;
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if (sd_get_sector_count()) return 0;
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return STA_NODISK;
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}
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/*-----------------------------------------------------------------------*/
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/* Initialize Disk Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (
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BYTE drv /* Physical drive nmuber (0) */
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)
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{
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if (drv) return RES_NOTRDY;
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if (sd_get_sector_count())
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{
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return 0;
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}
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else
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{
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if (sd_init() == 0) return 0;
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}
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return STA_NOINIT;
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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 drv, /* Physical drive nmuber (0) */
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BYTE *buff, /* Pointer to the data buffer to store read data */
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DWORD sector, /* Start sector number (LBA) */
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UINT count /* Sector count (1..128) */
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)
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{
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if (disk_status(drv) & STA_NOINIT) return RES_NOTRDY;
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while (count--)
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{
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if (sd_readsector(sector++, buff) != 0)
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{
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return RES_ERROR;
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}
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buff += 512;
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}
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return RES_OK;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_write (
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BYTE drv, /* Physical drive nmuber (0) */
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const BYTE *buff, /* Pointer to the data to be written */
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DWORD sector, /* Start sector number (LBA) */
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UINT count /* Sector count (1..128) */
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)
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{
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if (disk_status(drv) & STA_NOINIT) return RES_NOTRDY;
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while (count--)
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{
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if (sd_writesector(sector++, buff) != 0)
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{
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return RES_ERROR;
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}
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buff += 512;
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}
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return RES_OK;
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}
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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 drv, /* Physical drive nmuber (0) */
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BYTE ctrl, /* 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 (disk_status(drv) & STA_NOINIT) return RES_NOTRDY; /* Check if card is in the socket */
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res = RES_ERROR;
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switch (ctrl) {
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case CTRL_SYNC : /* Make sure that no pending write process */
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res = RES_OK;
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break;
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case GET_SECTOR_COUNT : /* Get number of sectors on the disk (DWORD) */
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*(DWORD*)buff = sd_get_sector_count();
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res = RES_OK;
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break;
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case GET_BLOCK_SIZE : /* Get erase block size in unit of sector (DWORD) */
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*(DWORD*)buff = 128;
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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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}
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return res;
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}
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