esp-idf/examples/get-started/blink/main/Kconfig.projbuild

menu "Example Configuration"

    choice BLINK_LED
        prompt "Blink LED type"
        default BLINK_LED_RMT if IDF_TARGET_ESP32C3
        default BLINK_LED_RMT if IDF_TARGET_ESP32S2
        default BLINK_LED_GPIO
        help
            Defines the default peripheral for blink example

        config BLINK_LED_GPIO
            bool "GPIO"
        config BLINK_LED_RMT
            bool "RMT - Addressable LED"
    endchoice

    config BLINK_LED_RMT_CHANNEL
        depends on BLINK_LED_RMT
        int "RMT Channel"
        range 0 7
        default 0
        help
            Set the RMT peripheral channel.
            ESP32 RMT channel from 0 to 7
            ESP32-S2 RMT channel from 0 to 3
            ESP32-C3 RMT channel from 0 to 1

    config BLINK_GPIO
        int "Blink GPIO number"
        range 0 34
        default 8 if IDF_TARGET_ESP32C3
        default 18 if IDF_TARGET_ESP32S2
        default 5
        help
            GPIO number (IOxx) to blink on and off or the RMT signal for the addressable LED.
            Some GPIOs are used for other purposes (flash connections, etc.) and cannot be used to blink.
            GPIOs 35-39 are input-only so cannot be used as outputs.

    config BLINK_PERIOD
        int "Blink period in ms"
        range 10 3600000
        default 1000
        help
            Define the blinking period in milliseconds.

endmenu