https://devzone.nordicsemi.com/f/nordic-q-a/29892/switch-over-to-external-crystal-without-softdevicenRF52832 There are three ways of working with the clock registers, a hardware access layer macro set, the nrf_drv_clock.c/h, and direct register access. What is the recommended way to switch from 64Mhz CPU on internal osc to 64Mhz high precisionen-USTelligent Community 13Fri, 26 Jan 2018 13:08:39 GMThttps://devzone.nordicsemi.com/thread/118890?ContentTypeID=1Fri, 26 Jan 2018 13:08:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:20f054b6-f48d-4c9d-80bb-1cd249ced658Hung Bui<p>I don&#39;t think there is any benefit using the HAL in this case.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/118889?ContentTypeID=1Thu, 25 Jan 2018 18:14:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b051530b-3e79-4e53-bc7d-5c137947380dSRA<p>Hung, alright. Direct access it is. Simple enough, I just wasn&#39;t sure if the hardware access layer functions had a feature that would be significantly better to use.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/118888?ContentTypeID=1Thu, 25 Jan 2018 12:17:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:259c2946-4e15-4067-ac97-4148d1131eaeHung Bui<p>I don&#39;t see any problem using registers directly (when the softdevice is not active).</p> <p>Have a look <a href="https://devzone.nordicsemi.com/question/22270/hfclkstat-and-an-external-crystal/">here</a>.</p><div style="clear:both;"></div>