https://devzone.nordicsemi.com/f/nordic-q-a/99234/pwm-init-handler-exceptionOur goal is to have the pwm output different values (duty-cycles) continuously. Therefore we want to use the PWM driver with the event handler to be triggered after completion of each sequence. We are using SDK 2.3.0. But after we run the &quot;nrfx_pwm_simple_playbacken-USTelligent Community 13Sun, 30 Apr 2023 07:38:12 GMThttps://devzone.nordicsemi.com/thread/423091?ContentTypeID=1Sun, 30 Apr 2023 07:38:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6edebdf5-d86a-4c38-bb62-34069ca76a6djju<p>Found the answer in this question.<br /><a href="https://devzone.nordicsemi.com/f/nordic-q-a/73937/fatal-error-unhandled-interrupt-when-using-callback-with-nrfx_pwm_init">https://devzone.nordicsemi.com/f/nordic-q-a/73937/fatal-error-unhandled-interrupt-when-using-callback-with-nrfx_pwm_init</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/423074?ContentTypeID=1Sat, 29 Apr 2023 05:52:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6d623df6-5b4a-4701-97e7-b6547d92598fjju<p>Addtional info: When the exception is caught in the &quot;compiler_barrier()&quot; is prints:&nbsp;<span>Fatal error: Spurious IRQ</span></p><div style="clear:both;"></div>