esp-idf/components/coap/Kconfig

menu "CoAP Configuration"
    visible if LWIP_IPV6

    choice COAP_MBEDTLS_ENCRYPTION_MODE
        prompt "CoAP Encryption method"
        default COAP_MBEDTLS_PSK
        help
            If the CoAP information is to be encrypted, the encryption environment
            can be set up in one of two ways (default being Pre-Shared key mode)

            - Encrypt using defined Pre-Shared Keys (PSK if uri includes coaps://)
            - Encrypt using defined Public Key Infrastructure (PKI if uri includes coaps://)

        config COAP_MBEDTLS_PSK
            bool "Pre-Shared Keys"

        config COAP_MBEDTLS_PKI
            bool "PKI Certificates"

    endchoice #COAP_MBEDTLS_ENCRYPTION_MODE

    config COAP_MBEDTLS_DEBUG
        bool "Enable CoAP debugging"
        default n
        help
            Enable CoAP debugging functions at compile time for the example code.

            If this option is enabled, call coap_set_log_level()
            at runtime in order to enable CoAP debug output via the ESP
            log mechanism.

    choice COAP_MBEDTLS_DEBUG_LEVEL
        bool "Set CoAP debugging level"
        depends on COAP_MBEDTLS_DEBUG
        default COAP_LOG_WARNING
        help
            Set CoAP debugging level

        config COAP_LOG_EMERG
            bool "Emergency"
        config COAP_LOG_ALERT
            bool "Alert"
        config COAP_LOG_CRIT
            bool "Critical"
        config COAP_LOG_ERROR
            bool "Error"
        config COAP_LOG_WARNING
            bool "Warning"
        config COAP_LOG_NOTICE
            bool "Notice"
        config COAP_LOG_INFO
            bool "Info"
        config COAP_LOG_DEBUG
            bool "Debug"
        config COAP_LOG_MBEDTLS
            bool "mbedTLS"
    endchoice

    config COAP_LOG_DEFAULT_LEVEL
        int
        default 0 if !COAP_MBEDTLS_DEBUG
        default 0 if COAP_LOG_EMERG
        default 1 if COAP_LOG_ALERT
        default 2 if COAP_LOG_CRIT
        default 3 if COAP_LOG_ERROR
        default 4 if COAP_LOG_WARNING
        default 5 if COAP_LOG_NOTICE
        default 6 if COAP_LOG_INFO
        default 7 if COAP_LOG_DEBUG
        default 9 if COAP_LOG_MBEDTLS

endmenu