esp-idf/examples/protocols/coap_client/main/Kconfig.projbuild

menu "Example CoAP Client Configuration"

    config TARGET_DOMAIN_URI
        string "Target Uri"
        default "coap://californium.eclipse.org"
        help
            Target uri for the example to use. Use coaps:// prefix for encrypted traffic
            using Pre-Shared Key (PSK) or Public Key Infrastructure (PKI).

    choice MBEDTLS_COAP_ENCRYPTION_MODE
        prompt "CoAP Encryption method"
        default MBEDTLS_COAP_PKI_NONE
        help
            If the CoAP information is to be encrypted, the encryption environment
            can be set up in one of three ways

            - None defined (will use PKI if coaps:// used)
            - Encrypt using defined Pre-Shared Keys (PSK)
            - Encrypt using defined Public Key Infrastructure (PKI)

        config MBEDTLS_COAP_NONE
            bool "None defined"

        config MBEDTLS_COAP_PSK
            bool "Pre-Shared Keys"

        config MBEDTLS_COAP_PKI
            bool "PKI Certificates"

    endchoice #MBEDTLS_COAP_ENCRYPTION_MODE

    config COAP_PSK_KEY
        string "Preshared Key (PSK) to used in the connection to the CoAP server"
        depends on MBEDTLS_COAP_PSK
        default "secret-key"
        help
            The Preshared Key to use to encrypt the communicatons. The same key must be 
            used at both ends of the CoAP connection, and the CoaP client must request 
            an URI prefixed with coaps:// instead of coap:// for DTLS to be used.

    config COAP_PSK_IDENTITY
        string "PSK Client identity (username)"
        depends on MBEDTLS_COAP_PSK
        default "coap-client"
        help
            The identity (or username) to use to identify to the CoAP server which
            PSK key to use.

    config MBEDTLS_COAP_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 MBEDTLS_COAP_DEBUG_LEVEL
        bool "Set CoAP debugging level"
        depends on MBEDTLS_COAP_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"
    endchoice

    config COAP_LOG_DEFAULT_LEVEL
        int
        default 0 if !MBEDTLS_COAP_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

endmenu