Data Structures

group group_sd_host_data_structures

struct cy_stc_sd_host_init_config_t

#include <cy_sd_host.h>

SD Host initialization configuration structure.

Public Members

bool emmc

Set to true of eMMC otherwise false.

cy_en_sd_host_dma_type_t dmaType

Selects the DMA type to be used.

bool enableLedControl

If true the SD clock controls one IO used to indicate when the card is being accessed.

struct cy_stc_sd_host_sd_card_config_t

#include <cy_sd_host.h>

SD/eMMC card configuration structure.

Public Members

bool lowVoltageSignaling

If true, the host supports the 1.8V signaling.

cy_en_sd_host_bus_width_t busWidth

The desired bus width.

cy_en_sd_host_card_type_t *cardType

The card type.

uint32_t *rca

The pointer to where to store the cards relative card address.

cy_en_sd_host_card_capacity_t *cardCapacity

Stores the card capacity.

struct cy_stc_sd_host_cmd_config_t

#include <cy_sd_host.h>

SD Host command configuration structure.

Public Members

uint32_t commandIndex

The index of the command.

uint32_t commandArgument

The argument for the command.

bool enableCrcCheck

Enables the CRC check on the response.

bool enableAutoResponseErrorCheck

If true the hardware checks the response for errors.

cy_en_sd_host_response_type_t respType

The response type.

bool enableIdxCheck

Checks the index of the response.

bool dataPresent

true: Data is present to be transferred using the DAT line, false: Commands use the CMD line only.

cy_en_sd_host_cmd_type_t cmdType

The command type.

struct cy_stc_sd_host_data_config_t

#include <cy_sd_host.h>

The SD Host data transfer configuration structure.

Public Members

uint32_t blockSize

The size of the data block.

uint32_t numberOfBlock

The number of blocks to send.

bool enableDma

Enables DMA for the transaction.

cy_en_sd_host_auto_cmd_t autoCommand

Selects which auto commands are used if any.

bool read

true = Read from the card, false = Write to the card.

uint32_t *data

The pointer to data to send/receive or the pointer to the DMA descriptor.

uint32_t dataTimeout

The timeout value for the transfer.

bool enableIntAtBlockGap

Enables the interrupt generation at the block gap.

bool enReliableWrite

For EMMC enables the reliable write.

struct cy_stc_sd_host_write_read_config_t

#include <cy_sd_host.h>

SD Host Write/Read structure.

Public Members

uint32_t *data

The pointer to data.

uint32_t address

The address to Write/Read data on the card or eMMC.

uint32_t numberOfBlocks

The number of blocks to Write/Read.

cy_en_sd_host_auto_cmd_t autoCommand

Selects which auto commands are used if any.

uint32_t dataTimeout

The timeout value for the transfer.

bool enReliableWrite

For EMMC cards, enables the reliable write.

bool enableDma

Enables DMA for the transaction.

struct cy_stc_sd_host_context_t

#include <cy_sd_host.h>

Context structure.

Public Members

cy_en_sd_host_dma_type_t dmaType

Defines the DMA type to be used.

cy_en_sd_host_card_capacity_t cardCapacity

The standard card or the card with the high capacity.

uint32_t maxSectorNum

The SD card maximum number of the sectors.

uint32_t RCA

The relative card address.

cy_en_sd_host_card_type_t cardType

The card type.

uint32_t csd[4]

The Card-Specific Data register.