https://devzone.nordicsemi.com/f/nordic-q-a/33135/make-a-counter-timestampHi I&#39;m brand new to use nrf52840, but hope there is one that can help i need a counter / timestamp. If it&#39;s a counter, it still has to count even if you do something else. To know when the last message from the server has been sent to see if it is stillen-USTelligent Community 13Mon, 16 Apr 2018 12:13:36 GMThttps://devzone.nordicsemi.com/thread/128460?ContentTypeID=1Mon, 16 Apr 2018 12:13:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8fdb12e2-d506-4794-bf7c-e487fd10b66bMttrinh<p>Hi,</p> <p>I suggest you to have a look <a href="https://devzone.nordicsemi.com/tutorials/b/software-development-kit/posts/application-timer-tutorial" target="_blank" rel="noopener noreferrer">Application timer tutorial</a>.</p><div style="clear:both;"></div>