https://devzone.nordicsemi.com/f/nordic-q-a/57183/how-to-know-the-written-length-longwriteMy peripheral uses &quot;LongWrite&quot;. Communication with Central has been successful. I want to know the length of the written data. After trying the following, the obtained result was &quot;0&quot;. ([Long Write]length:0) Is there a way to get length information? en-USTelligent Community 13Fri, 31 Jan 2020 16:23:21 GMThttps://devzone.nordicsemi.com/thread/232139?ContentTypeID=1Fri, 31 Jan 2020 16:23:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ca4f62ac-9c09-4032-a06d-31aedacebd7bJ&#248;rgen Holmefjord<p>Hi,</p> <p>Have you considered&nbsp;using the&nbsp;<a title="Queued Writes" href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/lib_ble_queued_write.html?cp=7_5_0_3_2_8">Queued Writes</a>&nbsp;library in the SDK to handle this for you? There is an <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/ble_sdk_app_queued_writes.html">example</a> available.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>