ctr_sd_interface.h File Reference

#include "ctr_io_interface.h"
#include "sdmmc/sdmmc.h"

Go to the source code of this file.

Data Structures
struct	ctr_sd_interface
	io interface object for accessing the SD card. More...

Functions
int	ctr_sd_interface_initialize (ctr_sd_interface *io)
	Initialize the given SD io interface object. More...
void	ctr_sd_interface_destroy (ctr_sd_interface *io)
	Destroys the given SD io interface object. More...
int	ctr_sd_interface_read (void *io, void *buffer, size_t buffer_size, uint64_t position, size_t count)
	Reads bytes from the given io interface. More...
int	ctr_sd_interface_write (void *io, const void *buffer, size_t buffer_size, uint64_t position)
	Writes bytes to the given io interface. More...
int	ctr_sd_interface_read_sector (void *io, void *buffer, size_t buffer_size, size_t sector, size_t count)
	Reads sectors from the given io interface. More...
int	ctr_sd_interface_write_sector (void *io, const void *buffer, size_t buffer_size, size_t sectorn)
	Writes sectors from the given io interface. More...
uint64_t	ctr_sd_interface_disk_size (void *io)
	Returns the size of the underlying disk for the given io interface. More...
size_t	ctr_sd_interface_sector_size (void *io)
	Returns the size of the sectors used by the io interface, which is 512 bytes for SD cards. More...

Function Documentation

void ctr_sd_interface_destroy

(

ctr_sd_interface *

io

)

Destroys the given SD io interface object.

Parameters

[in,out]

io

SD io interface to deinitialize.

Postcondition

The io interface has been destroyed and cannot be used for accessing the SD card without being re-initialized.

uint64_t ctr_sd_interface_disk_size

(

void *

io

)

Returns the size of the underlying disk for the given io interface.

Returns

The size of the NAND as reported by it.

int ctr_sd_interface_initialize

(

ctr_sd_interface *

io

)

Initialize the given SD io interface object.

Parameters

[out]

io

SD io interface to initialize.

Returns

0 on success, anything else on a failure. Failures can stem from the SD card not being inserted, or some more severe underlying problem.

int ctr_sd_interface_read	(	void *	io,
		void *	buffer,
		size_t	buffer_size,
		uint64_t	position,
		size_t	count
	)

Reads bytes from the given io interface.

Parameters

[in,out]	io	The io interface to use for reading.
[out]	buffer	Pointer to the buffer.
[in]	buffer_size	The size of the buffer in bytes.
[in]	position	Position/address in the io interface to read from.
[in]	count	The number of bytes to read.

Returns

0 upon success, anything else means an error.

int ctr_sd_interface_read_sector	(	void *	io,
		void *	buffer,
		size_t	buffer_size,
		size_t	sector,
		size_t	count
	)

Reads sectors from the given io interface.

SD card access uses 512 byte sectors.

Parameters

[in,out]	io	The io interface to use for reading.
[out]	buffer	Pointer to the buffer.
[in]	buffer_size	The size of the buffer in bytes.
[in]	sector	Sector position in the io interface to read from.
[in]	count	The number of sectors to read.

Returns

0 upon success, anything else means an error.

size_t ctr_sd_interface_sector_size

(

void *

io

)

Returns the size of the sectors used by the io interface, which is 512 bytes for SD cards.

Returns

512 bytes as the sector size for SD cards.

int ctr_sd_interface_write	(	void *	io,
		const void *	buffer,
		size_t	buffer_size,
		uint64_t	position
	)

Writes bytes to the given io interface.

Parameters

[in,out]	io	The io interface to use for writing.
[in]	buffer	Pointer to the buffer.
[in]	buffer_size	The size of the buffer, and the number of bytes to write.
[in]	position	Position/address in the io interface to write to.

Returns

0 upon success, anything else means an error.

int ctr_sd_interface_write_sector	(	void *	io,
		const void *	buffer,
		size_t	buffer_size,
		size_t	sectorn
	)

Writes sectors from the given io interface.

SD card access uses 512 byte sectors.

Parameters

[in,out]	io	The io interface to use for writing.
[in]	buffer	Pointer to the buffer.
[in]	buffer_size	The size of the buffer, and the number of bytes to write. If the number is not a multiple of the sector size, this function will only write all the full sectors it can, ignoring the end of the buffer that doesn't fit a sector.
[in]	sector	Sector Position in the io interface to write to.

Returns

0 upon success, anything else means an error.