Creating a 100 uS timer results in HardFaultshttps://devzone.nordicsemi.com/f/nordic-q-a/43139/creating-a-100-us-timer-results-in-hardfaultsI am trying to get a periodic interrupt every 100 uS using TIMER4. My timers_init() code sets up the TIMER4 registers as follows: My interrupt service routine for now is a fairly simple increment of a variable but instead of hitting the breakpointen-USTelligent Community 13Tue, 29 Oct 2019 21:08:21 GMTRE: Creating a 100 uS timer results in HardFaultshttps://devzone.nordicsemi.com/thread/217406?ContentTypeID=1Tue, 29 Oct 2019 21:08:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4d0eb5b6-946e-4245-8158-778bc4f6fa41Steven Grunza<p>I am no longer working for the company for which this ticket was opened so it can be closed.</p><div style="clear:both;"></div>RE: Creating a 100 uS timer results in HardFaultshttps://devzone.nordicsemi.com/thread/168683?ContentTypeID=1Wed, 30 Jan 2019 12:00:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:86a3ce12-affa-44c5-a401-3ec3a38d8085Vidar Berg<p>Your code appears to be correct. However, if you have the Softdevice enabled you need to changed the interrupt priority of the timer IRQ to one of the allowed values (reset value for interrupt priority is &#39;0&#39; which is reserved to the softdevice):&nbsp;<a href="https://www.nordicsemi.com/DocLib/Content/SoftDevice_Spec/s132/latest/SDS/s1xx/processor_avail_interrupt_latency/exception_mgmt_sd">https://www.nordicsemi.com/DocLib/Content/SoftDevice_Spec/s132/latest/SDS/s1xx/processor_avail_interrupt_latency/exception_mgmt_sd</a>.&nbsp;&nbsp;Let me know if it doesn&#39;t help .&nbsp;</p><div style="clear:both;"></div>