Overview

SD Disk Function
DSTATUS	sd_disk_initialize (uint8_t physicalDrive)
	Initializes SD disk. More...

DSTATUS	sd_disk_status (uint8_t physicalDrive)
	Gets SD disk status. More...

DRESULT	sd_disk_read (uint8_t physicalDrive, uint8_t *buffer, uint32_t sector, uint8_t count)
	Reads SD disk. More...

DRESULT	sd_disk_write (uint8_t physicalDrive, const uint8_t *buffer, uint32_t sector, uint8_t count)
	Writes SD disk. More...

DRESULT	sd_disk_ioctl (uint8_t physicalDrive, uint8_t command, void *buffer)
	SD disk IO operation. More...

SD over SPI Disk Function
DSTATUS	sdspi_disk_initialize (uint8_t physicalDrive)
	Initializes SD disk over SPI. More...

DSTATUS	sdspi_disk_status (uint8_t physicalDrive)
	Gets SD over SPI disk status. More...

DRESULT	sdspi_disk_read (uint8_t physicalDrive, uint8_t *buffer, uint32_t sector, uint8_t count)
	Reads SD disk over SPI. More...

DRESULT	sdspi_disk_write (uint8_t physicalDrive, const uint8_t *buffer, uint32_t sector, uint8_t count)
	Writes to SD disk over SPI. More...

DRESULT	sdspi_disk_ioctl (uint8_t physicalDrive, uint8_t command, void *buffer)
	SD over SPI disk IO operation. More...

void	spi_init (void)
	Initializes the SPI.

status_t	spi_set_frequency (uint32_t frequency)
	Sets the SPI bus frequency. More...

status_t	spi_exchange (uint8_t in, uint8_t out, uint32_t size)
	Transfers data over SPI bus in full-duplex way. More...

void	timer_init (void)
	Initializes the timer to generator 1ms interrupt used to get current time in milliseconds.

uint32_t	timer_get_current_milliseconds (void)
	Gets current time in milliseconds. More...

void	sdspi_host_init (void)
	Initializes the host descriptor.

Function Documentation

DSTATUS sd_disk_initialize ( uint8_t physicalDrive )

Parameters

physicalDrive Physical drive number.

Return values

STA_NOINIT	Failed.
RES_OK	Success.

DSTATUS sd_disk_status ( uint8_t physicalDrive )

Parameters

physicalDrive Physical drive number.

Return values

STA_NOINIT	Failed.
RES_OK	Success.

DRESULT sd_disk_read	(	uint8_t	physicalDrive,
		uint8_t *	buffer,
		uint32_t	sector,
		uint8_t	count
	)

Parameters

physicalDrive	Physical drive number.
buffer	The data buffer pointer to store read content.
sector	The start sector number to be read.
count	The sector count to be read.

Return values

RES_PARERR	Failed.
RES_OK	Success.

DRESULT sd_disk_write	(	uint8_t	physicalDrive,
		const uint8_t *	buffer,
		uint32_t	sector,
		uint8_t	count
	)

Parameters

physicalDrive	Physical drive number.
buffer	The data buffer pointer to store write content.
sector	The start sector number to be written.
count	The sector count to be written.

Return values

RES_PARERR	Failed.
RES_OK	Success.

DRESULT sd_disk_ioctl	(	uint8_t	physicalDrive,
		uint8_t	command,
		void *	buffer
	)

Parameters

physicalDrive	Physical drive number.
command	The command to be set.
buffer	The buffer to store command result.

Return values

RES_PARERR	Failed.
RES_OK	Success.

DSTATUS sdspi_disk_initialize ( uint8_t physicalDrive )

Parameters

physicalDrive Physical drive number.

Return values

STA_NOINIT	Failed.
RES_OK	Success.

DSTATUS sdspi_disk_status ( uint8_t physicalDrive )

Parameters

physicalDrive Physical drive number.

Return values

STA_NOINIT	Failed.
RES_OK	Success.

DRESULT sdspi_disk_read	(	uint8_t	physicalDrive,
		uint8_t *	buffer,
		uint32_t	sector,
		uint8_t	count
	)

Parameters

physicalDrive	Physical drive number.
buffer	The data buffer pointer to store read content.
sector	The start sector number to be read.
count	The sector count to be read.

Return values

RES_PARERR	Failed.
RES_OK	Success.

DRESULT sdspi_disk_write	(	uint8_t	physicalDrive,
		const uint8_t *	buffer,
		uint32_t	sector,
		uint8_t	count
	)

Parameters

physicalDrive	Physical drive number.
buffer	The data buffer pointer to store write content.
sector	The start sector number to be written.
count	The sector count to be written.

Return values

RES_PARERR	Failed.
RES_OK	Success.

DRESULT sdspi_disk_ioctl	(	uint8_t	physicalDrive,
		uint8_t	command,
		void *	buffer
	)

Parameters

physicalDrive	Physical drive number.
command	The command to be set.
buffer	The buffer to store command result.

Return values

RES_PARERR	Failed.
RES_OK	Success.

status_t spi_set_frequency ( uint32_t frequency )

Parameters

frequency The frequency to set.

Return values

kStatus_Success	Success.
kStatus_Fail	Failed.

status_t spi_exchange	(	uint8_t *	in,
		uint8_t *	out,
		uint32_t	size
	)

Parameters

in	The buffer to save the data to be sent.
out	The buffer to save the data to be read.
size	The transfer data size.

Returns: The status of the function DSPI_MasterTransferPolling().

uint32_t timer_get_current_milliseconds ( void )

Returns: Current time in milliseconds.

Overview

SD Disk Function

SD over SPI Disk Function

Function Documentation