https://devzone.nordicsemi.com/f/nordic-q-a/80332/mqtt-simple-timerHello I wanted to use the MQTT simple example (which works great) and add timer, so that MQTT will be send every 20 seconds: on main I added: struct k_timer my_timer; k_timer_init(&amp;bz_timer, bz_func, NULL); k_timer_start(&amp;bz_timer, K_SECONDSen-USTelligent Community 13Tue, 05 Oct 2021 14:32:50 GMThttps://devzone.nordicsemi.com/thread/332677?ContentTypeID=1Tue, 05 Oct 2021 14:32:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9e879e05-6f66-4ea1-9d04-ce4bc809b6ddkamacode<p>resolved that.</p> <p></p> <p>if anyone will encounter that, of course it will fail since timer is in interrupt context, we can not call the MQTT from it</p> <p>the solution is calling to workqueue from the timer, which works great!</p><div style="clear:both;"></div>