https://devzone.nordicsemi.com/f/nordic-q-a/45532/specification-about-iotHi Nordics, I wonder is there any specification on IOT. I have seen the source code on IOT at nRF5_SDK_15.3.0_59ac345\examples\iot\tcp. But I don&#39;t know how to use it. So I hope there is some document indicate users how to built the developing environmenten-USTelligent Community 13Fri, 29 Mar 2019 11:27:17 GMThttps://devzone.nordicsemi.com/thread/179203?ContentTypeID=1Fri, 29 Mar 2019 11:27:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8b96c3cf-0c2f-429f-b7b0-47a46044e3ed&#216;yvind<p>Hello,</p> <p>The documentation for this example can be found <a href="https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-3-0/iot_sdk_app_lwip_tcp">here</a>. There is also some documentation in the example itself.&nbsp;<br /><br /><span>To demonstrate TCP protocol support on nRF5x, the <a href="https://en.wikipedia.org/wiki/LwIP">lwIP</a> stack is used. Nordic&#39;s stack does not currently support TCP.&nbsp;</span></p> <p>Kind regards,<br />Øyvind</p><div style="clear:both;"></div>