OpenThread Programmatic Configuration Stays Detached - CLI Works Finehttps://devzone.nordicsemi.com/f/nordic-q-a/127188/openthread-programmatic-configuration-stays-detached---cli-works-fineEnvironment Hardware: nRF52840 DK (PCA10056 v3.0.3) SDK: NCS 3.2.3 Board: nrf52840dk/nrf52840 Problem Summary OpenThread CLI successfully forms networks and UDP messaging works, but programmatic configuration using otDatasetSetActive() staysen-USTelligent Community 13Wed, 25 Mar 2026 15:47:23 GMTRE: OpenThread Programmatic Configuration Stays Detached - CLI Works Finehttps://devzone.nordicsemi.com/thread/564051?ContentTypeID=1Wed, 25 Mar 2026 15:47:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0ddb491a-ee74-4ccb-bf2b-db4033470462gc0rreiab<p>Hi Adrian,<br /><br />Do you know what these timestamp-related configurations are used for? I&#39;m trying to understand their purpose and why they are required.&nbsp;</p><div style="clear:both;"></div>RE: OpenThread Programmatic Configuration Stays Detached - CLI Works Finehttps://devzone.nordicsemi.com/thread/562231?ContentTypeID=1Fri, 27 Feb 2026 14:42:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:63a6a27c-9c9e-4249-9591-33dd895c3615Edvin<p>Hello,<br />I am glad you found the solution to your issue, and thank you for sharing!</p> <p></p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>RE: OpenThread Programmatic Configuration Stays Detached - CLI Works Finehttps://devzone.nordicsemi.com/thread/562214?ContentTypeID=1Fri, 27 Feb 2026 13:05:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2a13d1a4-4a14-420d-8ad4-b1d36cebf457Adrian Hallas<p>I found the solution.&nbsp; I wasn&#39;t setting the timestamp in the operational dataset:</p> <div style="background-color:#1f1f1f;color:#cccccc;font-family:Consolas, &#39;Courier New&#39;, monospace;font-size:14px;font-weight:normal;line-height:19px;white-space:pre;"> <div><span style="color:#cccccc;">&nbsp; &nbsp;</span><span style="color:#6a9955;">// ADD TIMESTAMP!</span></div> <div><span style="color:#cccccc;">&nbsp; &nbsp; </span><span style="color:#9cdcfe;">dataset</span><span style="color:#cccccc;">.</span><span style="color:#9cdcfe;">mActiveTimestamp</span><span style="color:#cccccc;">.</span><span style="color:#9cdcfe;">mSeconds</span><span style="color:#cccccc;"> </span><span style="color:#d4d4d4;">=</span><span style="color:#cccccc;"> </span><span style="color:#b5cea8;">1</span><span style="color:#cccccc;">;</span></div> <div><span style="color:#cccccc;">&nbsp; &nbsp; </span><span style="color:#9cdcfe;">dataset</span><span style="color:#cccccc;">.</span><span style="color:#9cdcfe;">mActiveTimestamp</span><span style="color:#cccccc;">.</span><span style="color:#9cdcfe;">mTicks</span><span style="color:#cccccc;"> </span><span style="color:#d4d4d4;">=</span><span style="color:#cccccc;"> </span><span style="color:#b5cea8;">0</span><span style="color:#cccccc;">;</span></div> <div><span style="color:#cccccc;">&nbsp; &nbsp; </span><span style="color:#9cdcfe;">dataset</span><span style="color:#cccccc;">.</span><span style="color:#9cdcfe;">mActiveTimestamp</span><span style="color:#cccccc;">.</span><span style="color:#9cdcfe;">mAuthoritative</span><span style="color:#cccccc;"> </span><span style="color:#d4d4d4;">=</span><span style="color:#cccccc;"> </span><span style="color:#569cd6;">false</span><span style="color:#cccccc;">;</span></div> <div><span style="color:#cccccc;">&nbsp; &nbsp; </span><span style="color:#9cdcfe;">dataset</span><span style="color:#cccccc;">.</span><span style="color:#9cdcfe;">mComponents</span><span style="color:#cccccc;">.</span><span style="color:#9cdcfe;">mIsActiveTimestampPresent</span><span style="color:#cccccc;"> </span><span style="color:#d4d4d4;">=</span><span style="color:#cccccc;"> </span><span style="color:#569cd6;">true</span><span style="color:#cccccc;">;</span></div> </div><div style="clear:both;"></div>