https://devzone.nordicsemi.com/f/nordic-q-a/39809/crash-when-using-bsp-event-callback-freertosHi everyone I&#39;m trying to get the status of button by using the bsp_event_callback_t, but my application crashes when I push on any button. Test environment: Freertos, NRF52840 with the DK PCA10056 0.9.3, SDK 15.2, arm-gcc on Linux. I write a minimalen-USTelligent Community 13Thu, 07 Mar 2019 07:38:16 GMThttps://devzone.nordicsemi.com/thread/174715?ContentTypeID=1Thu, 07 Mar 2019 07:38:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aefdc074-d43e-490b-89c8-12e4c4c8fdd2Pavel<p>Was experience similar problem with&nbsp;Optimisation set to None in Segger Embedded Studio.</p> <p>In my case increasing configTIMER_TASK_STACK_DEPTH &nbsp; in&nbsp;<span>FreeRTOSConfig.h helped.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/154387?ContentTypeID=1Thu, 25 Oct 2018 07:44:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:36177f99-2111-4796-9e3e-88dea0e03d3aPatsux<p>I&#39;ve found ! The project was compiled in O0 instead of O3 ! Now, that works.</p><div style="clear:both;"></div>