https://devzone.nordicsemi.com/f/nordic-q-a/125841/enable-timer-interrupt-in-nrf54l15Hi guys, I am trying to enable timer interrupt in nRF54L15. but when i debug the application it locks inside the IRQ_lock. can anyone explain me the issue here. It would be very elpful in my development regards JONESen-USTelligent Community 13Wed, 26 Nov 2025 13:53:52 GMThttps://devzone.nordicsemi.com/thread/555521?ContentTypeID=1Wed, 26 Nov 2025 13:53:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fd680f1d-b17f-493d-84d0-a8ad9c8e53f5Sigurd<p><br />Hi!</p> <p>In your code you have:</p> <p>timer_config.interrupt_priority = 0;</p> <p><span>&nbsp;P</span><span><span>riority 0 is the</span><span>&nbsp;very highest priority</span></span><span>, above Zephyr’s own kernel and system ISRs. Using that for a periodic timer</span><span>&nbsp;that keeps firing can starve everything else.</span></p> <p>Try e.g. this instead</p> <div> <div><span>timer_config.interrupt_priority = NRFX_TIMER_DEFAULT_CONFIG_IRQ_PRIORITY;&nbsp;</span></div> <div><span></span></div> </div><div style="clear:both;"></div>