https://devzone.nordicsemi.com/f/nordic-q-a/18373/external-interrupt-with-softdeviceHi, Please help me with the following theoretical situation: I have a NRF52832 running HID profile, mostly sleeping. From time to time, an external interrupt occur (GPIO line) and the time interval in which the MCU must handle this interrupt is 150usen-USTelligent Community 13Wed, 14 Dec 2016 10:37:16 GMThttps://devzone.nordicsemi.com/thread/70928?ContentTypeID=1Wed, 14 Dec 2016 10:37:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c00d0c71-8ef2-4ba4-80d5-26976c019c19bjorn-spockeli<p>Hi Assafi,</p> <p>the SoftDevice will always run with the highest priority and we do not provide any APIs that allows you to alter this since the SoftDevice has real-time constraints that must be meet.</p> <p>We provide utility functions to create critical regions, see this page on Infocenter, but these functions will only disable interrupts from other peripherals and not the SoftDevice itself.</p> <p>It is possible to use the SoftDevice&#39;s <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.sds/dita/softdevices/s130/concurrent_multiprotocol_tsl_api/concurrent_multiprotocol_tsl_api.html">TimeSlot API</a> to request a timeslot where you&#39;re guaranteed to not receive any interrupts from the SoftDevice. However, ultimately it&#39;s the SoftDevice that decides if the timeslot should be granted or not.</p> <p>Best regards</p> <p>Bjørn</p><div style="clear:both;"></div>