esp-idf/examples/storage/sd_card/sdmmc/main/Kconfig.projbuild

menu "SD/MMC Example Configuration"

    config EXAMPLE_FORMAT_IF_MOUNT_FAILED
        bool "Format the card if mount failed"
        default n
        help
            If this config item is set, format_if_mount_failed will be set to true and the card will be formatted if
            the mount has failed.

    choice EXAMPLE_SDMMC_BUS_WIDTH
        prompt "SD/MMC bus width"
        default EXAMPLE_SDMMC_BUS_WIDTH_4
        help
            Select the bus width of SD or MMC interface.
            Note that even if 1 line mode is used, D3 pin of the SD card must have a pull-up resistor connected.
            Otherwise the card may enter SPI mode, the only way to recover from which is to cycle power to the card.

        config EXAMPLE_SDMMC_BUS_WIDTH_4
            bool "4 lines (D0 - D3)"

        config EXAMPLE_SDMMC_BUS_WIDTH_1
            bool "1 line (D0)"
    endchoice


    if IDF_TARGET_ESP32S3

        config EXAMPLE_PIN_CMD
            int "CMD GPIO number"
            default 35 if IDF_TARGET_ESP32S3

        config EXAMPLE_PIN_CLK
            int "CLK GPIO number"
            default 36 if IDF_TARGET_ESP32S3

        config EXAMPLE_PIN_D0
            int "D0 GPIO number"
            default 37 if IDF_TARGET_ESP32S3

        if EXAMPLE_SDMMC_BUS_WIDTH_4

            config EXAMPLE_PIN_D1
                int "D1 GPIO number"
                default 38 if IDF_TARGET_ESP32S3

            config EXAMPLE_PIN_D2
                int "D2 GPIO number"
                default 33 if IDF_TARGET_ESP32S3

            config EXAMPLE_PIN_D3
                int "D3 GPIO number"
                default 34 if IDF_TARGET_ESP32S3

        endif  # EXAMPLE_SDMMC_BUS_WIDTH_4

    endif  # IDF_TARGET_ESP32S3

endmenu