https://devzone.nordicsemi.com/f/nordic-q-a/18306/nrf51-with-interruptsHello developers, I am struggling badly to use interrupt in my application. I am using softdevice S130 and ble_nus, ble_bas and ble_hrm services. All I want is to trigger a timer on interrupt event by pressing a button. I have tried every possible thingen-USTelligent Community 13Tue, 13 Dec 2016 15:21:17 GMThttps://devzone.nordicsemi.com/thread/70699?ContentTypeID=1Tue, 13 Dec 2016 15:21:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a54f2034-def8-4054-bb2c-06f2689cccc1sid<p>Thank you, I finally figured out what the problem was. I was trying to use buttons on 51-dk as interrupts with softdevice, but softdevice uses these buttons in ble_hrm example as bsp and reset etc. Hence my sd was crashing.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/70697?ContentTypeID=1Mon, 12 Dec 2016 08:33:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:47860608-df5f-49ee-b29f-ef789f6bf7f4Sigurd<p>With the SoftDevice you don&#39;t need to start the Low Frequency Clock (LFCLK), since the SoftDevice will start it for you. Did your project work before you tried adding the application timer? was it advertising? Is this the nRF51-DK or a custom board? See <a href="https://devzone.nordicsemi.com/question/60125/my-device-is-freezing-and-restarting/">this post</a> for how to debug your application.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/70698?ContentTypeID=1Sun, 11 Dec 2016 15:41:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:07961448-f85b-4e0b-a2fa-9ef460db0594sid<p>Thank you Sigurd for your time, I tried this with softdevice, then my softdevice stops working, also interrupt does not work. Any special precaution I must take or modification I must make here?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/70696?ContentTypeID=1Sun, 11 Dec 2016 15:12:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:170fe384-c1db-49fa-bc88-5b33f1991fddSigurd<p>Hi,</p> <p>Please take a look at the <a href="https://devzone.nordicsemi.com/tutorials/19/">Application Timer Tutorial</a>. The tutorial will show you how to create timers and how to use a button to trigger a timer.</p><div style="clear:both;"></div>