mirror of
https://github.com/marqs85/ossc
synced 2025-06-18 01:09:16 +03:00
129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/*-----------------------------------------------------------------------*/
|
|
/* Low level disk I/O module SKELETON for FatFs (C)ChaN, 2019 */
|
|
/*-----------------------------------------------------------------------*/
|
|
/* 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 "ff.h" /* Obtains integer types */
|
|
#include "diskio.h" /* Declarations of disk functions */
|
|
#include "sd_io.h"
|
|
#include "sysconfig.h"
|
|
|
|
extern SD_DEV sdcard_dev;
|
|
|
|
/* Definitions of physical drive number for each drive */
|
|
#define DEV_RAM 0 /* Example: Map Ramdisk to physical drive 0 */
|
|
#define DEV_MMC 1 /* Example: Map MMC/SD card to physical drive 1 */
|
|
#define DEV_USB 2 /* Example: Map USB MSD to physical drive 2 */
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Get Drive Status */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DSTATUS disk_status (
|
|
BYTE pdrv /* Physical drive nmuber to identify the drive */
|
|
)
|
|
{
|
|
//res = SD_Status(&sdcard_dev);
|
|
|
|
return sdcard_dev.mount ? RES_OK : STA_NODISK;
|
|
}
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Inidialize a Drive */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DSTATUS disk_initialize (
|
|
BYTE pdrv /* Physical drive nmuber to identify the drive */
|
|
)
|
|
{
|
|
DSTATUS stat;
|
|
SDRESULTS res;
|
|
|
|
if (sdcard_dev.mount)
|
|
return SD_OK;
|
|
|
|
res = SD_Init(&sdcard_dev);
|
|
|
|
return (res == SD_OK) ? RES_OK : 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 */
|
|
LBA_t sector, /* Start sector in LBA */
|
|
UINT count /* Number of sectors to read */
|
|
)
|
|
{
|
|
SDRESULTS res;
|
|
|
|
if (!sdcard_dev.mount)
|
|
return STA_NOINIT;
|
|
|
|
res = SD_Read(&sdcard_dev, buff, sector, 0, count*SD_BLK_SIZE);
|
|
|
|
return (res == SD_OK) ? RES_OK : RES_PARERR;
|
|
}
|
|
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Write Sector(s) */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
#if FF_FS_READONLY == 0
|
|
|
|
DRESULT disk_write (
|
|
BYTE pdrv, /* Physical drive nmuber to identify the drive */
|
|
const BYTE *buff, /* Data to be written */
|
|
LBA_t sector, /* Start sector in LBA */
|
|
UINT count /* Number of sectors to write */
|
|
)
|
|
{
|
|
SDRESULTS res;
|
|
int i;
|
|
|
|
if (!sdcard_dev.mount)
|
|
return STA_NOINIT;
|
|
|
|
for (i=0; i<count; i++) {
|
|
res = SD_Write(&sdcard_dev, (void*)&buff[i*SD_BLK_SIZE], sector);
|
|
if (res != SD_OK)
|
|
return RES_PARERR;
|
|
}
|
|
|
|
return RES_OK;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
/*-----------------------------------------------------------------------*/
|
|
/* Miscellaneous Functions */
|
|
/*-----------------------------------------------------------------------*/
|
|
|
|
DRESULT disk_ioctl (
|
|
BYTE pdrv, /* Physical drive nmuber (0..) */
|
|
BYTE cmd, /* Control code */
|
|
void *buff /* Buffer to send/receive control data */
|
|
)
|
|
{
|
|
DRESULT res;
|
|
int result;
|
|
|
|
return RES_PARERR;
|
|
}
|
|
|