https://devzone.nordicsemi.com/f/nordic-q-a/93534/nrf9160dk-and-timerHello Sorry for the dumb question, but how do I get this timer to work? What am I doing wrong? I would like to measure the distance with the HC-SR04 sensor. I understand that the error starts there, but how should it be done? en-USTelligent Community 13Fri, 04 Nov 2022 13:08:55 GMThttps://devzone.nordicsemi.com/thread/394155?ContentTypeID=1Fri, 04 Nov 2022 13:08:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0fbe8cc8-dbc8-48bf-8756-f5956f77e4cfEinar Thorsrud<p>Hi,</p> <p>You are getting a reset when you use&nbsp;NVIC_EnableIRQ(), as you are not allowed to write directly to the NVIC from the application. Instead, you typically want to use&nbsp;IRQ_CONNECT (or in some special cases IRQ_DIRECT_CONNECT) and irq_enable(). You can see an example of using the TIMER similarly to&nbsp;what you do in the radio test implementation: <a href="https://github.com/nrfconnect/sdk-nrf/blob/main/samples/peripheral/radio_test/src/radio_test.c">radio_test.c</a>.</p><div style="clear:both;"></div>