SdioCard Class Reference

Raw SDIO access to SD and SDHC flash memory cards. More...

#include <SdioCard.h>

Inheritance diagram for SdioCard:

Collaboration diagram for SdioCard:

Public Member Functions
bool	begin ()
uint32_t	cardSize ()
bool	dmaBusy ()
bool	erase (uint32_t firstBlock, uint32_t lastBlock)
uint8_t	errorCode ()
uint32_t	errorData ()
uint32_t	errorLine ()
bool	readBlock (uint32_t lba, uint8_t *dst)
bool	readBlocks (uint32_t lba, uint8_t *dst, size_t nb)
bool	readCID (void *cid)
bool	readCSD (void *csd)
bool	readOCR (uint32_t *ocr)
bool	syncBlocks ()
uint8_t	type ()
bool	writeBlock (uint32_t lba, const uint8_t *src)
bool	writeBlocks (uint32_t lba, const uint8_t *src, size_t nb)

Detailed Description

Raw SDIO access to SD and SDHC flash memory cards.

Member Function Documentation

bool SdioCard::begin

(

)

Initialize the SD card.

Returns

true for success else false.

uint32_t SdioCard::cardSize

(

)

Determine the size of an SD flash memory card.

Returns

The number of 512 byte data blocks in the card or zero if an error occurs.

bool SdioCard::dmaBusy

(

)

Returns

DMA transfer status.

bool SdioCard::erase	(	uint32_t	firstBlock,
		uint32_t	lastBlock
	)

Erase a range of blocks.

Parameters

[in]	firstBlock	The address of the first block in the range.
[in]	lastBlock	The address of the last block in the range.

Note

This function requests the SD card to do a flash erase for a range of blocks. The data on the card after an erase operation is either 0 or 1, depends on the card vendor. The card must support single block erase.

Returns

The value true is returned for success and the value false is returned for failure.

uint8_t SdioCard::errorCode

(

)

Returns

code for the last error. See SdInfo.h for a list of error codes.

uint32_t SdioCard::errorData

(

)

Returns

error data for last error.

uint32_t SdioCard::errorLine

(

)

Returns

error line for last error. Tmp function for debug.

bool SdioCard::readBlock ( uint32_t  lba, uint8_t *  dst  )

virtual

Read a 512 byte block from an SD card.

Parameters

[in]	lba	Logical block to be read.
[out]	dst	Pointer to the location that will receive the data.

Returns

The value true is returned for success and the value false is returned for failure.

Implements BaseBlockDriver.

bool SdioCard::readBlocks ( uint32_t  lba, uint8_t *  dst, size_t  nb  )

virtual

Read multiple 512 byte blocks from an SD card.

Parameters

[in]	lba	Logical block to be read.
[in]	nb	Number of blocks to be read.
[out]	dst	Pointer to the location that will receive the data.

Returns

The value true is returned for success and the value false is returned for failure.

Implements BaseBlockDriver.

bool SdioCard::readCID

(

void *

cid

)

Read a card's CID register. The CID contains card identification information such as Manufacturer ID, Product name, Product serial number and Manufacturing date.

Parameters

[out]

cid

pointer to area for returned data.

Returns

true for success or false for failure.

bool SdioCard::readCSD

(

void *

csd

)

Read a card's CSD register. The CSD contains Card-Specific Data that provides information regarding access to the card's contents.

Parameters

[out]

csd

pointer to area for returned data.

Returns

true for success or false for failure.

bool SdioCard::readOCR

(

uint32_t *

ocr

)

Read OCR register.

Parameters

[out]

ocr

Value of OCR register.

Returns

true for success else false.

bool SdioCard::syncBlocks ( )

virtual

Returns

success if sync successful. Not for user apps.

Implements BaseBlockDriver.

uint8_t SdioCard::type

(

)

Return the card type: SD V1, SD V2 or SDHC

Returns

0 - SD V1, 1 - SD V2, or 3 - SDHC.

bool SdioCard::writeBlock ( uint32_t  lba, const uint8_t *  src  )

virtual

Writes a 512 byte block to an SD card.

Parameters

[in]	lba	Logical block to be written.
[in]	src	Pointer to the location of the data to be written.

Returns

The value true is returned for success and the value false is returned for failure.

Implements BaseBlockDriver.

bool SdioCard::writeBlocks ( uint32_t  lba, const uint8_t *  src, size_t  nb  )

virtual

Write multiple 512 byte blocks to an SD card.

Parameters

[in]	lba	Logical block to be written.
[in]	nb	Number of blocks to be written.
[in]	src	Pointer to the location of the data to be written.

Returns

The value true is returned for success and the value false is returned for failure.

Implements BaseBlockDriver.

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The documentation for this class was generated from the following file:

• Arduino/libraries/SdFat/src/SdCard/SdioCard.h