diskio.c

Go to the documentation of this file.

#pragma GCC optimize ("O2")


/*-----------------------------------------------------------------------*/
/*
(c) 2017 night_ghost@ykoctpa.ru
 
based on:
*/

/* Low level disk I/O module skeleton for FatFs     (C)ChaN, 2016        */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be        */
/* attached to the FatFs via a glue function rather than modifying it.   */
/* This is an example of glue functions to attach various exsisting      */
/* storage control modules to the FatFs module with a defined API.       */
/*-----------------------------------------------------------------------*/

#include "diskio.h"     /* FatFs lower layer API */
#include "FatFs/drivers/sd.h"


/* Definitions of physical drive number for each drive */
#define DEV_SD      0
#define DEV_NODEV   1


/*-----------------------------------------------------------------------*/
/* Get Drive Status                                                      */
/*-----------------------------------------------------------------------*/

DSTATUS disk_status (
    BYTE pdrv       /* Physical drive nmuber to identify the drive */
){
    switch (pdrv) {
    case DEV_SD :
        return sd_status();

    }
    return STA_NOINIT;
}



/*-----------------------------------------------------------------------*/
/* Inidialize a Drive                                                    */
/*-----------------------------------------------------------------------*/

DSTATUS disk_initialize (
    BYTE pdrv               /* Physical drive nmuber to identify the drive */
){

    switch (pdrv) {
    case DEV_SD :
            return sd_initialize();

    }
    return STA_NOINIT;
}



/*-----------------------------------------------------------------------*/
/* Read Sector(s)                                                        */
/*-----------------------------------------------------------------------*/

DRESULT disk_read (
    BYTE pdrv,      /* Physical drive nmuber to identify the drive */
    BYTE *buff,     /* Data buffer to store read data */
    DWORD sector,   /* Start sector in LBA */
    UINT count      /* Number of sectors to read */
)
{
    switch (pdrv) {
    case DEV_SD:

            return sd_read(buff, sector, count);

    }

    return RES_PARERR;
}



/*-----------------------------------------------------------------------*/
/* Write Sector(s)                                                       */
/*-----------------------------------------------------------------------*/

DRESULT disk_write (
    BYTE pdrv,          /* Physical drive nmuber to identify the drive */
    const BYTE *buff,   /* Data to be written */
    DWORD sector,       /* Start sector in LBA */
    UINT count          /* Number of sectors to write */
)
{
    switch (pdrv) {
    case DEV_SD :
        return sd_write(buff, sector, count);

    }

    return RES_PARERR;
}



/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions                                               */
/*-----------------------------------------------------------------------*/

DRESULT disk_ioctl (
    BYTE pdrv,      /* Physical drive nmuber (0..) */
    BYTE cmd,       /* Control code */
    void *buff      /* Buffer to send/receive control data */
)
{
    switch (pdrv) {
    case DEV_SD :

        return sd_ioctl(cmd, buff);

    }

    return RES_PARERR;
}