sd.h File Reference

SD card. More...

#include <stdint.h>

Functions
int	sdInit ()
	Initialise SD card. More...
bool	sdIsInserted ()
	Check if SD card is inserted. More...
int	sdReadBlocks (int startBlock, int numberOfBlocks, uint8_t *dest)
	Read blocks from SD card. More...
int	sdWriteBlocks (int startBlock, int numberOfBlocks, uint8_t *src)
	Write blocks to SD card. More...

Function Documentation

sdInit()

int sdInit

(

)

Initialise SD card.

Returns

0 if successful, non-zero otherwise

sdIsInserted()

bool sdIsInserted

(

)

Check if an SD card is physically inserted into the slot (reads the state of the mechanical switch).

Returns

true if an SD card is inserted, false otherwise

sdReadBlocks()

int sdReadBlocks	(	int	startBlock,
		int	numberOfBlocks,
		uint8_t *	dest
	)

Read blocks (512B) from SD card.

Note

Must have called sdInit first

Parameters

startBlock	Block to start reading from (i.e. address / 512)
numberOfBlocks	Number of 512B blocks to read
dest	Pointer to memory location to store data

Returns

0 if successful, non-zero otherwise

See also

sdInit

sdWriteBlocks()

int sdWriteBlocks	(	int	startBlock,
		int	numberOfBlocks,
		uint8_t *	src
	)

Write blocks (512B) to SD card.

Note

Must have called sdInit first

Parameters

startBlock	Block to start reading writing at (i.e. address / 512)
numberOfBlocks	Number of 512B blocks to write
dest	Pointer to memory location of data to write

Returns

0 if successful, non-zero otherwise

See also

sdInit