https://devzone.nordicsemi.com/f/nordic-q-a/52027/high-frequency-saadc-sample-with-softdeviceI&#39;m using an NRF52840, SoftDevice s140, FreeRTOS, SDK 15.3.0. I&#39;m trying to sample my ADC at high speed, &gt;1khz (10-40kHz). I implemented the logic from the SAADC exaple, using PPI and nrf_drv_timer, and I managed to set the speed of the trigger timeren-USTelligent Community 13Wed, 11 Sep 2019 16:24:33 GMThttps://devzone.nordicsemi.com/thread/209252?ContentTypeID=1Wed, 11 Sep 2019 16:24:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b95528fc-a7df-4977-854d-c1d8e9ab00fcKenneth<p>I am not familiar with how you can do it with FreeRTOS, but the implementation in \saadc should be able to run without any issue using normal SDK + SD. You may however increase the&nbsp;NRFX_SAADC_CONFIG_IRQ_PRIORITY priority to to 3 (instead of 6). Just make sure that you don&#39;t call any softdevice calls from the&nbsp;saadc_callback() in this case, since it will not be able to do softdevice api calls from this interrupt level, ref:</p> <p><a href="https://infocenter.nordicsemi.com/topic/sds_s132/SDS/s1xx/processor_avail_interrupt_latency/exception_mgmt_sd.html">https://infocenter.nordicsemi.com/topic/sds_s132/SDS/s1xx/processor_avail_interrupt_latency/exception_mgmt_sd.html</a>&nbsp;</p><div style="clear:both;"></div>