https://devzone.nordicsemi.com/f/nordic-q-a/27672/unable-to-get-fatfs-example-working-nrf52840-sdk14-2I am unable to get the FatFs example working for my nRF52840 dev kit board using the latest SDK14.2. I have determined this is related to the type of SD Card that is inserted. Only 1 out of the 4 I have work... SanDisk 2GB formatted Fat16 - Doesn&#39;ten-USTelligent Community 13Sat, 17 Mar 2018 16:43:02 GMThttps://devzone.nordicsemi.com/thread/124866?ContentTypeID=1Sat, 17 Mar 2018 16:43:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:91117563-c057-4fb4-bed1-aee9c00999f6SRose<p>Correct, my card slot also required a pull up.&nbsp; I had to switch from SDKv14.0 to 14.2 to fix this.&nbsp; Yes, but there is a type-o in the header.&nbsp; The value should be 2, not 3. </p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/124634?ContentTypeID=1Thu, 15 Mar 2018 16:13:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a3967c18-3ece-49f2-9665-411545265c6eslayer49<p>Hi,&nbsp;</p> <p>I had the same issue.&nbsp; &nbsp;My card required a pullup on MISO pin in order to get the example working.</p> <p>Check sdk_config.h for this section:</p> <p></p> <p><pre class="ui-code" data-mode="text">// &lt;o&gt; NRF_SPI_DRV_MISO_PULLUP_CFG - MISO PIN pull-up configuration. // &lt;0=&gt; NRF_GPIO_PIN_NOPULL // &lt;1=&gt; NRF_GPIO_PIN_PULLDOWN // &lt;3=&gt; NRF_GPIO_PIN_PULLUP #ifndef NRF_SPI_DRV_MISO_PULLUP_CFG #define NRF_SPI_DRV_MISO_PULLUP_CFG 3 #endif</pre></p> <p></p> <p></p> <p></p> <p></p><div style="clear:both;"></div>