https://devzone.nordicsemi.com/f/nordic-q-a/77292/use-ncs1-5-0-fats-and-nrf5340-fil-can-not-save-in-sd-cardi use a thread to save fil like below ,and find can not save file in sd card ,sd card SPI test ok . before enter in loop. close fil and reset system can save fil in sd card but when code run in thread loop , want to open fil to write ,and close filen-USTelligent Community 13Tue, 13 Jul 2021 06:40:01 GMThttps://devzone.nordicsemi.com/thread/319703?ContentTypeID=1Tue, 13 Jul 2021 06:40:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a2599100-86df-421b-80b2-e8760bd3bb78&#216;yvind<p>Please see <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.6.0/zephyr/reference/storage/disk/access.html">Disk Access chapter in the Zephyr repo</a>.</p> <p>Kind regards,<br />Øyvind</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/319376?ContentTypeID=1Fri, 09 Jul 2021 12:33:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a4a4f9fe-4382-4b36-8ce9-0d03a14809a7zhouhaifang<p>the reson is&nbsp;fil alway opened&nbsp; to be written ,i alway cut off power,and before cut power fil is opened,so can not save file .before cut power fil must be in close status&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/319344?ContentTypeID=1Fri, 09 Jul 2021 11:26:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8a5678e7-e420-4f44-9d03-a8771fd9d477&#216;yvind<p>Hello,&nbsp;</p> <p><span>Note that we are currently in our summer vacation period and responses are expected to be slow due to little availability of resources.</span></p> <hr /> <p><span>Has your application&nbsp;worked before? Are you getting any errors when running this? Have you debugged the code?</span></p> <p><span>Kind regards,<br />Øyvind</span></p><div style="clear:both;"></div>