sd_diskio.c File Reference

SD Disk I/O driver. More...

#include "ff_gen_drv.h"
#include "sd_diskio.h"

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Macros
#define	SD_TIMEOUT   SD_DATATIMEOUT
#define	SD_DEFAULT_BLOCK_SIZE   512

Functions
static DSTATUS	SD_CheckStatus (BYTE lun)
DSTATUS	SD_initialize (BYTE lun)
	Initializes a Drive. More...
DSTATUS	SD_status (BYTE lun)
	Gets Disk Status. More...
DRESULT	SD_read (BYTE lun, BYTE *buff, DWORD sector, UINT count)
	Reads Sector(s) More...

Variables
static volatile DSTATUS	Stat = STA_NOINIT
const Diskio_drvTypeDef	SD_Driver

Detailed Description

SD Disk I/O driver.

Attention

© Copyright (c) 2021 STMicroelectronics. All rights reserved.

This software component is licensed by ST under Ultimate Liberty license SLA0044, the "License"; You may not use this file except in compliance with the License. You may obtain a copy of the License at: www.st.com/SLA0044

Macro Definition Documentation

SD_DEFAULT_BLOCK_SIZE

#define SD_DEFAULT_BLOCK_SIZE   512

SD_TIMEOUT

#define SD_TIMEOUT   SD_DATATIMEOUT

Function Documentation

SD_CheckStatus()

static DSTATUS SD_CheckStatus ( BYTE  lun )

static

References BSP_SD_GetCardState(), MSD_OK, and Stat.

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SD_initialize()

DSTATUS SD_initialize

(

BYTE

lun

)

Initializes a Drive.

Parameters

lun	: not used

Return values

DSTATUS

Operation status

References BSP_SD_Init(), MSD_OK, SD_CheckStatus(), and Stat.

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SD_read()

DRESULT SD_read	(	BYTE	lun,
		BYTE *	buff,
		DWORD	sector,
		UINT	count
	)

Reads Sector(s)

Parameters

lun	: not used
*buff	Data buffer to store read data
sector	Sector address (LBA)
count	Number of sectors to read (1..128)

Return values

DRESULT

Operation result

References BSP_SD_GetCardState(), BSP_SD_ReadBlocks(), MSD_OK, res, and SD_TIMEOUT.

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SD_status()

DSTATUS SD_status

(

BYTE

lun

)

Gets Disk Status.

Parameters

lun	: not used

Return values

DSTATUS

Operation status

References SD_CheckStatus().

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Variable Documentation

SD_Driver

const Diskio_drvTypeDef SD_Driver

Initial value:

= {
    SD_initialize, SD_status, SD_read,
 
 
 
 
 
 
 
}

Stat

volatile DSTATUS Stat = STA_NOINIT

static