https://devzone.nordicsemi.com/f/nordic-q-a/87827/qspi-driver-with-2-i-o-pins-to-flash-mx25Hello , We are attempting to use the QSPI driver with an MX25 with 2 i/o lines instead of 4, essential SB 10 and 15 on the nrf52840 DK have been cut. However I am not able to read back data from it that matches the write. Is there something we areen-USTelligent Community 13Thu, 12 May 2022 13:35:09 GMThttps://devzone.nordicsemi.com/thread/367652?ContentTypeID=1Thu, 12 May 2022 13:35:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a5dc177d-97ed-43ab-86f9-09585064562cSimonr<p>Hi RJ</p> <p>First off, what SDK version are you using in your application? Have you also configured the <strong>NRFX_QSPI_CONFIG_READOC&nbsp;</strong>config to only use two lines? Is there a specific reason you just want to use two lines for QSPI communication? A lot of the point with a QSPI connection is to use multiple IO lines to transmit more data faster.</p> <p>Can you also explain what exactly isn&#39;t matching? Is the data you read back looking completely random or just somewhat offset/distorted? I can&#39;t see what the issue might be from the snippets you&#39;ve added here unfortunately.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>