https://devzone.nordicsemi.com/f/nordic-q-a/25058/can-rtc-instances-run-synchronized-i-e-same-counter-valueSuppose I configure RTC0 and RTC1 to have the same LFXO clock source (with a 30uSec tick) and start them in quick succession. Will their counters read the same value? I could experiment, so I am asking whether someone has already done this, on Nordicen-USTelligent Community 13Mon, 11 Sep 2017 16:07:40 GMThttps://devzone.nordicsemi.com/thread/98676?ContentTypeID=1Mon, 11 Sep 2017 16:07:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:33f5eb53-bc7d-4781-bdf7-650dfc812b9dbutch<p>Yes I know it exists but as I mentioned before, I am interested in a low-level implementation in Rust language and don&#39;t want to use a C language library. Thanks for your answer about the PPI, that seems good.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/98677?ContentTypeID=1Mon, 11 Sep 2017 13:50:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7920b07b-2884-4735-82a2-4ef5f24c606bSigurd<p>Have you considered using the <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v14.0.0%2Flib_timer.html&amp;cp=4_0_0_3_43">app_timer library</a> ?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/98678?ContentTypeID=1Mon, 11 Sep 2017 13:47:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d685962f-6c9b-49f8-9a30-17490660fd43Sigurd<p>Hi,</p> <p>Yes, different RTC instances can run synchronized by using PPI. On each PPI channel, the signals are synchronized to the 16 MHz clock. Use a <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v14.0.0/group__nrf__drv__ppi.html?cp=4_0_0_6_8_14_1_8#ga3c077e2eb26e4b72bef2c7d98c914524">PPI fork</a> in order to start both RTC instances at the same time.</p><div style="clear:both;"></div>