https://devzone.nordicsemi.com/f/nordic-q-a/8364/scan-stop-problemHI, I have some problems with the function sd_ble_gap_scan_stop(). I want to stop scanning into the RTC1 event handler but when I use this function (sd_ble_gap_scan_stop()) there is an hard fault...why this happens ??? thanks.en-USTelligent Community 13Mon, 27 Jul 2015 11:40:08 GMThttps://devzone.nordicsemi.com/thread/30344?ContentTypeID=1Mon, 27 Jul 2015 11:40:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bb5ee77c-4791-423f-b062-8bf1a94a95dbPetter Myhre<p>SoftDevice API (sd_*) functions can only be called from lower interrupt priority when compared to the SVC priority. The SVC priority is 2, so you can&#39;t use 1(Application High - App(H)), you need to use 3(Application Low - App(L)).</p> <p>Or you can set a flag in the interrupt handler and check this flag in the main loop and then stop scanning.</p> <p>For more information about this see <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.130.sds.v1.0.0/sd_arch/sd_arch.html?cp=2_7_2_0_16">this</a>, Section Application Program Interface (API) and Exception (interrupt) management with a SoftDevice.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/30343?ContentTypeID=1Mon, 27 Jul 2015 07:05:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e7d9c392-290d-4ba4-a720-ae3a4b24bdc4Fabri_Cortone_87<p>Now I have set the RTC1 priority interrupt to 1 but the problem persists...</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/30342?ContentTypeID=1Fri, 24 Jul 2015 16:03:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:152fc701-17f4-4d7b-acb3-c07766933755Petter Myhre<p>What is the priority of the RTC1 interrupt? Have you set it?</p><div style="clear:both;"></div>