mirror of
https://github.com/marqs85/ossc
synced 2025-11-01 00:16:03 +03:00
129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module SKELETON for FatFs (C)ChaN, 2019 */
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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 modules to the FatFs module with a defined API. */
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/*-----------------------------------------------------------------------*/
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#include "ff.h" /* Obtains integer types */
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#include "diskio.h" /* Declarations of disk functions */
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#include "sd_io.h"
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#include "sysconfig.h"
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extern SD_DEV sdcard_dev;
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/* Definitions of physical drive number for each drive */
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#define DEV_RAM 0 /* Example: Map Ramdisk to physical drive 0 */
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#define DEV_MMC 1 /* Example: Map MMC/SD card to physical drive 1 */
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#define DEV_USB 2 /* Example: Map USB MSD to physical drive 2 */
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/*-----------------------------------------------------------------------*/
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/* Get Drive Status */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_status (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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//res = SD_Status(&sdcard_dev);
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return sdcard_dev.mount ? RES_OK : STA_NODISK;
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}
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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 to identify the drive */
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)
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{
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DSTATUS stat;
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SDRESULTS res;
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if (sdcard_dev.mount)
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return SD_OK;
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res = SD_Init(&sdcard_dev);
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return (res == SD_OK) ? RES_OK : 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 pdrv, /* Physical drive nmuber to identify the drive */
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BYTE *buff, /* Data buffer to store read data */
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LBA_t sector, /* Start sector in LBA */
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UINT count /* Number of sectors to read */
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)
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{
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SDRESULTS res;
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if (!sdcard_dev.mount)
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return STA_NOINIT;
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res = SD_Read(&sdcard_dev, buff, sector, 0, count*SD_BLK_SIZE);
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return (res == SD_OK) ? RES_OK : RES_PARERR;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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#if FF_FS_READONLY == 0
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DRESULT disk_write (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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const BYTE *buff, /* Data to be written */
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LBA_t sector, /* Start sector in LBA */
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UINT count /* Number of sectors to write */
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)
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{
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SDRESULTS res;
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int i;
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if (!sdcard_dev.mount)
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return STA_NOINIT;
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for (i=0; i<count; i++) {
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res = SD_Write(&sdcard_dev, (void*)&buff[i*SD_BLK_SIZE], sector);
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if (res != SD_OK)
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return RES_PARERR;
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}
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return RES_OK;
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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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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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DRESULT res;
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int result;
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return RES_PARERR;
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}
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