Chapter 2. API Reference
Structures
struct sdmmc_csd_t
Decoded values from SD card Card Specific Data register
Public Members
int csd_ver
CSD structure format
int mmc_ver
MMC version (for CID format)
int capacity
total number of sectors
int sector_size
sector size in bytes
int read_block_len
block length for reads
int card_command_class
Card Command Class for SD
int tr_speed
Max transfer speed
struct sdmmc_cid_t
Decoded values from SD card Card IDentification register
Public Members
int mfg_id
manufacturer identification number
int oem_id
OEM/product identification number
char name[8]
product name (MMC v1 has the longest)
int revision
product revision
int serial
product serial number
int date
manufacturing date
struct sdmmc_scr_t
Decoded values from SD Configuration Register
Public Members
int sd_spec
SD Physical layer specification version, reported by card
int bus_width
bus widths supported by card: BIT(0) —1-bit bus, BIT(2) —4-bit bus
struct sdmmc_ext_csd_t
Decoded values of Extended Card Specific Data
Espressif Systems 736
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