Asynchronous Secure Digital card (SDC) and MultiMedia card (MMC) library. More...

Modules
	SD/MMC card support using SPI configuration

Data Structures
struct	sdc_evt_t
	SDC event structure. More...

struct	sdc_type_t
	SDC type information structure. More...

struct	app_sdc_config_t
	SDC configuration structure. More...

struct	app_sdc_info_t
	SDC information structure. More...

Macros
#define	SDC_SECTOR_SIZE 512
	Size of a single SD card block in bytes.

#define	APP_SDCARD_CONFIG (MOSI_PIN, MISO_PIN, SCK_PIN, CS_PIN)

Typedefs
typedef void(*	sdc_event_handler_t )( sdc_evt_t const *p_event)
	SDC event handler type.

Enumerations
enum	sdc_result_t { SDC_SUCCESS = 0, SDC_ERROR_NOT_RESPONDING , SDC_ERROR_TIMEOUT , SDC_ERROR_NOT_SUPPORTED , SDC_ERROR_COMMUNICATION , SDC_ERROR_DATA , SDC_ERROR_INTERNAL }
	SDC operation result. More...

enum	sdc_evt_type_t { SDC_EVT_INIT = 0, SDC_EVT_READ , SDC_EVT_WRITE }
	SDC event type. More...

enum	sdc_version_t { SDC_TYPE_UNKNOWN = 0, SDC_TYPE_MMCV3 , SDC_TYPE_SDV1 , SDC_TYPE_SDV2 }
	SDC type and version. More...

Functions
ret_code_t	app_sdc_init ( app_sdc_config_t const *const p_config, sdc_event_handler_t event_handler)
	Function for initializing the card. More...

ret_code_t	app_sdc_uninit (void)
	Function for uninitializing the card. More...

bool	app_sdc_busy_check (void)
	Function for retrieving the card busy state. More...

ret_code_t	app_sdc_block_read (uint8_t *p_buf, uint32_t block_address, uint16_t block_count)
	Function for reading the data blocks from the card. More...

ret_code_t	app_sdc_block_write (uint8_t const *p_buf, uint32_t block_address, uint16_t block_count)
	Function for writing the data blocks to the card. More...

app_sdc_info_t const *	app_sdc_info_get (void)
	Function for retrieving the card information structure. More...

Detailed Description

Asynchronous Secure Digital card (SDC) and MultiMedia card (MMC) library.

Macro Definition Documentation

#define APP_SDCARD_CONFIG	(	MOSI_PIN,
		MISO_PIN,
		SCK_PIN,
		CS_PIN
	)

Value:

         {    \
        
         .mosi_pin = MOSI_PIN,                                   \
        
         .miso_pin = MISO_PIN,                                   \
        
         .sck_pin  = SCK_PIN,                                    \
        
         .cs_pin   = CS_PIN                                      \
        
         }

Enumeration Type Documentation

enum sdc_evt_type_t

SDC event type.

Enumerator
SDC_EVT_INIT	Initialization procedure.
SDC_EVT_READ	Data read procedure.
SDC_EVT_WRITE	Data write procedure.

enum sdc_result_t

SDC operation result.

Enumerator
SDC_SUCCESS	Operation successful.
SDC_ERROR_NOT_RESPONDING	Card is not responding or not present.
SDC_ERROR_TIMEOUT	Card response timeout.
SDC_ERROR_NOT_SUPPORTED	Operation not supported.
SDC_ERROR_COMMUNICATION	Communication error.
SDC_ERROR_DATA	Data read/write error.
SDC_ERROR_INTERNAL	Internal error.

enum sdc_version_t

SDC type and version.

Enumerator
SDC_TYPE_UNKNOWN	Unknown / uninitialized card.
SDC_TYPE_MMCV3	MultiMedia card (MMC) version 3.
SDC_TYPE_SDV1	Secure Digital card (SDC) version 1.0.
SDC_TYPE_SDV2	Secure Digital card (SDC) version 2.0.

Function Documentation

ret_code_t app_sdc_block_read	(	uint8_t *	p_buf ,
		uint32_t	block_address ,
		uint16_t	block_count
	)

Function for reading the data blocks from the card.

Parameters

[out]	p_buf	Pointer to the data buffer. Must not be null.
[in]	block_address	Number of the first block to be read.
[in]	block_count	Number of blocks to read. Must be greater than 0.

Return values

NRF_SUCCESS	If block read operation was started succesfully.
NRF_ERROR_INVALID_STATE	If the card is not initialized.
NRF_ERROR_BUSY	If there is already an operation active.
NRF_ERROR_INVALID_PARAM	If invalid parameters were specified.

ret_code_t app_sdc_block_write	(	uint8_t const *	p_buf ,
		uint32_t	block_address ,
		uint16_t	block_count
	)

Function for writing the data blocks to the card.

Parameters

[out]	p_buf	Pointer to the data to be written. Must not be null.
[in]	block_address	Number of the first block to write.
[in]	block_count	Number of blocks to write. Must be greater than 0.

Return values

NRF_SUCCESS	If block write operation was started succesfully.
NRF_ERROR_INVALID_STATE	If the card is not initialized.
NRF_ERROR_BUSY	If there is already an operation active.
NRF_ERROR_INVALID_PARAM	If invalid parameters were specified.

bool app_sdc_busy_check ( void )

Function for retrieving the card busy state.

Return values

true	If there is an operation in progress.
false	If the card is in idle state.

app_sdc_info_t const* app_sdc_info_get ( void )

Function for retrieving the card information structure.

Returns: Pointer to the card information structure or NULL if card is not initialized.

ret_code_t app_sdc_init	(	app_sdc_config_t const *const	p_config ,
		sdc_event_handler_t	event_handler
	)

Function for initializing the card.

Parameters

[in]	p_config	Pointer to the SDC configuration structure.
[in]	event_handler	Pointer to the event handler function.

Return values

NRF_SUCCESS	If initialization process was started succesfully.
NRF_ERROR_INVALID_STATE	If the card is already initialized or the initialization is in progress.
NRF_ERROR_INVALID_PARAM	If invalid parameters were specified.

ret_code_t app_sdc_uninit ( void )

Function for uninitializing the card.

Return values

NRF_SUCCESS	If card was uninitialized succesfully.
NRF_ERROR_INVALID_STATE	If the card is not initialized.
NRF_ERROR_BUSY	If there is an operation in progress.

SD card library

nRF5 SDK v15.0.0

Modules

Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation