https://devzone.nordicsemi.com/f/nordic-q-a/15940/handling-blink-timers-and-using-led-one-shotHi, I have a app that using a constantly blinking LED started at power-up, however I am having some trouble stopping the timer.. (Yes, I know it&#39;s simple.. but i still cant figure out where) This is my timer err_code = bsp_init(BSP_INIT_LED,en-USTelligent Community 13Wed, 24 Aug 2016 11:07:05 GMThttps://devzone.nordicsemi.com/thread/60805?ContentTypeID=1Wed, 24 Aug 2016 11:07:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c38207a5-b064-43a7-91f7-e620747b7c0cOle Bauck<p>The bsp module is indeed not easy to use and we are working on improving it.</p> <p>The bsp module uses one shot timer and starts a new timer in the event handler based on the state. If the state is IDLE it will not start a new timer, hence this is the way you stop the constant blinking. You can set the state with:</p> <pre><code>uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE); APP_ERROR_CHECK(err_code); </code></pre> <p>You should use app_timer and not rtc1.h. App_timer uses the RTC1 peripheral so if you try to use both app_timer and rtc1.h you will run into trouble. See <a href="https://devzone.nordicsemi.com/tutorials/19/">this tutorial</a> on how to use the app_timer module.</p><div style="clear:both;"></div>