https://devzone.nordicsemi.com/f/nordic-q-a/35999/issue-writing-in-flash-using-fdsSDK 15, nRF52840, PCA10056 When I read my data in the flash I recover the before last value writen and not the last. I&#39;m using the es_flash.c source code from eddyston example which use fds.c to write in the flash. Here is my code to write or readen-USTelligent Community 13Tue, 03 Jul 2018 12:37:47 GMThttps://devzone.nordicsemi.com/thread/138775?ContentTypeID=1Tue, 03 Jul 2018 12:37:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ed941561-34e9-43cd-87c3-fc66af53d5a4Florent_kwn<p>I had :</p> <p><pre class="ui-code" data-mode="c_cpp"> record_to_write.data.p_data = p_params-&gt;p_data_buf;</pre><br />at the beginning of the ES_FLASH_ACCESS_WRITE case of <em>access_flash_data&nbsp;</em></p> <p>and I had</p> <p><pre class="ui-code" data-mode="text"> while(m_num_pending_ops &gt; 0){}</pre><br />at the end of <em>flash_access_nb_charge</em> to wait the FDS_EVT_WRITE event</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/138769?ContentTypeID=1Tue, 03 Jul 2018 12:13:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:54213b5b-3950-4185-98e6-131b6a3441ecFlorent_kwn<p>no, I&#39;m a nRF beginner, can you give me an axample of how to wait for the FDS_EVT_WRITE event ?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/138764?ContentTypeID=1Tue, 03 Jul 2018 12:01:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6c245b68-d48f-4068-9fe4-9eaf6f4e5840FormerMember<p>After writing the data, do you wait for FDS_EVT_WRITE before reading the data?</p><div style="clear:both;"></div>