https://devzone.nordicsemi.com/f/nordic-q-a/15599/why-it-stop-itselfhi i have nrf51422 sdkv6 ss10 v1 i have timer2 inited after something like 30 minute that it work right it stop without any system or ble event and it goes here and it is in app_error_handler and the error code is -559038737 and the lineen-USTelligent Community 13Mon, 08 Aug 2016 06:44:31 GMThttps://devzone.nordicsemi.com/thread/59513?ContentTypeID=1Mon, 08 Aug 2016 06:44:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ebeb03d2-259e-468a-b5f8-1a4c9f670b17&#216;yvind Karlsen<p>Hi,</p> <p>See <a href="https://devzone.nordicsemi.com/question/60125/my-device-is-freezing-and-restarting/">this answer</a> to set up debug mode. I suspect that you have enabeled high optimization level, this might be the reason that the error is reported on line 659.</p> <p>Best regards,</p> <p>Øyvind</p><div style="clear:both;"></div>