https://devzone.nordicsemi.com/f/nordic-q-a/47943/help-with-hardfault-analysisHi, looking for some advice regarding hardfault analysis. Using NRF52840 with SDK 15.3 and SD 6.1.0, i am seeing occasional hard fault (after ~30 min to 2 hours), during relatively low traffic period. I am connected to an ipad. I update a status charactersiticsen-USTelligent Community 13Thu, 30 May 2019 15:38:57 GMThttps://devzone.nordicsemi.com/thread/190088?ContentTypeID=1Thu, 30 May 2019 15:38:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d2ad5856-bfe9-4085-98c0-0420ccf7bac5Mojo<p>There are many possible causes. &nbsp;The usual one was because somewhere in your code there is a interrupt at priority highest. &nbsp;The SD requires to have highest priority. &nbsp;Other is when your interrupt processing is taken to long causing the SD to miss fire its timing. &nbsp;In resume, anything that block the SD is likely to cause the hard fault.</p><div style="clear:both;"></div>