https://devzone.nordicsemi.com/f/nordic-q-a/34204/what-does-event-driven-in-nrf5-sdk-meanThe nRF5 SDK is event-driven. So does it mean that the event handler in my application will be directly called in the interrupt service routine? If I write a long event handler, does it will affect other things?en-USTelligent Community 13Fri, 11 May 2018 13:41:15 GMThttps://devzone.nordicsemi.com/thread/131720?ContentTypeID=1Fri, 11 May 2018 13:41:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b19bcd08-5f32-4e28-a2c2-4aa0cf98bc3atesc<p>Hi,</p> <p>Yes and no.</p> <p>The event handler in your application is called as part of a software interrupt, although with relatively low priority. See the <a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s132.sds%2Fdita%2Fsoftdevices%2Fs130%2Fprocessor_avail_interrupt_latency%2Fexception_mgmt_sd.html">Interrupt priority levels</a> section of the SoftDevice specification. It will only affect other things that are of same or lower interrupt priority. (Higher number is lower priority.)</p> <p>You may also run events (and any other interrupt triggered things) in main context (lowest priority), by using the <a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.0.0%2Flib_scheduler.html">Schedule handling library</a>.</p> <p>Regards,<br />Terje</p><div style="clear:both;"></div>