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SD/MMC Controller (sd)

SD/MMC host controller.

Device Type​

DEVICE_TYPE_SDHCI

Structure​

struct sdhci_t {
    char * name;
    int voltage, width, clock;
    int removable, isspi;
    void * sdcard;
    int (*detect)(struct sdhci_t * sdhci);
    int (*reset)(struct sdhci_t * sdhci);
    int (*setvoltage)(struct sdhci_t * sdhci, int voltage);
    int (*setwidth)(struct sdhci_t * sdhci, int width);
    int (*setclock)(struct sdhci_t * sdhci, int clock);
    int (*transfer)(struct sdhci_t * sdhci, struct sdhci_cmd_t * cmd, struct sdhci_data_t * dat);
    void * priv;
};

Key API​

FunctionDescription
search_sdhci(name)Find SDHCI by name
register_sdhci(sdhci, drv)Register an SDHCI
unregister_sdhci(sdhci)Unregister an SDHCI
sdhci_detect(sdhci)Detect card
sdhci_transfer(sdhci, cmd, data)Transfer command/data

Description​

SD/MMC host controller interface. Manages SD/SDHC/SDXC and MMC/eMMC cards, supports SPI mode and removable card detection.