https://devzone.nordicsemi.com/f/nordic-q-a/65496/sd-card-optimizations-increase-efficiency-alternativesHi All, I have been using the fatfs examples to write data to a SD-CARD Using SPI, Up until now I have been able to use effectively, as per the documentation I Understand it uses SPIM easy DMA, and it is fully asynchronous. I am currently writingen-USTelligent Community 13Thu, 03 Sep 2020 10:24:38 GMThttps://devzone.nordicsemi.com/thread/267792?ContentTypeID=1Thu, 03 Sep 2020 10:24:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0b0baa95-27b2-4b75-b6cd-e00e5974449bhaakonsh<p>[quote user=""][/quote]</p> <p>&nbsp;1. What I have tried so far:&nbsp;</p> <p>&nbsp; &nbsp; 1.1 Set different priority levels for this peripheral.&nbsp;</p> <p>&nbsp; &nbsp; 1.2 Increased the Speed of the SPI Bus to the max 8 Mhz.&nbsp;</p> <p>&nbsp; &nbsp; 1.3 Implement reasonable large buffers to avoid loosing data packets.&nbsp;</p> <p></p> <p>&nbsp;These are just shots in the dark, fixes for an unknown issue, you need both digital and analog scopes of your I/O lines to see the real issue and potential fixes.&nbsp;</p><div style="clear:both;"></div>