COAP Secure implementationhttps://devzone.nordicsemi.com/f/nordic-q-a/89293/coap-secure-implementationHi, I am trying to use secure COAP and got an error when compiling: undefined reference to &#39;otCoapSecureSetPsk&#39;. This function is declared in &quot;coap_secure.h&quot;. I am digging in to the header file, and it mentioned: The functions in this module areen-USTelligent Community 13Fri, 24 Jun 2022 10:52:55 GMTRE: COAP Secure implementationhttps://devzone.nordicsemi.com/thread/374116?ContentTypeID=1Fri, 24 Jun 2022 10:52:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:294cd981-4758-41ac-bce8-abe880f0be5aSigurd Hellesvik<p>Hi</p> <p>Have you set <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/kconfig/index.html#CONFIG_MBEDTLS_KEY_EXCHANGE_PSK_ENABLED">CONFIG_MBEDTLS_KEY_EXCHANGE_PSK_ENABLED</a>?</p> <p>Make sure its dependencies are fulfilled. Our <a href="https://nrfconnect.github.io/vscode-nrf-connect/kconfig/nrfkconfig.html">kconfig</a> tool is very useful for checking if a configuration is set after the build or not.</p> <p>Regards,<br />Sigurd Hellesvik</p><div style="clear:both;"></div>