https://devzone.nordicsemi.com/f/nordic-q-a/91731/rtc-prescaller-sdk17Hi All, Is macro in /modules/nrfx/hal/nrf_rtc.h correct? /** @brief Macro for converting expected frequency to prescaler setting. */ #define RTC_FREQ_TO_PRESCALER(FREQ) (uint16_t)(((RTC_INPUT_FREQ) / (FREQ)) - 1) so for 1000Hz requested iten-USTelligent Community 13Wed, 07 Sep 2022 15:44:54 GMThttps://devzone.nordicsemi.com/thread/385089?ContentTypeID=1Wed, 07 Sep 2022 15:44:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9d496ee3-c73d-478e-95f1-1338955c6555pawel<p>Thank you,</p> <p>I found correct version in freertos ports, also in SDK</p> <p>/* Constants required to manipulate the NVIC. */<br />#define portNRF_RTC_PRESCALER ( (uint32_t) (ROUNDED_DIV(configSYSTICK_CLOCK_HZ, configTICK_RATE_HZ) - 1) )</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/385039?ContentTypeID=1Wed, 07 Sep 2022 13:19:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1e04916c-8114-4e03-936d-ceb67038b6aePriyanka<p>Hi pawel,</p> <p>Thank you very much for reporting this to us <span class="emoticon" data-url="https://devzone.nordicsemi.com/cfs-file/__key/system/emoji/1f642.svg" title="Slight smile">&#x1f642;</span>. This helps us in further improvement. I have alerted this internally and we are onto it.</p> <p>Best Regards,</p> <p>Priyanka</p><div style="clear:both;"></div>