https://devzone.nordicsemi.com/f/nordic-q-a/82455/using-the-scheduler-library-in-sdk-12-3-0Hi, I am in the process of porting an application from an nrf52 to an nrf51 due to availability issues. One problem I run into is that bluetooth events are handled in interrupt context. The scheduler library would be able to solve that problem ifen-USTelligent Community 13Tue, 07 Dec 2021 14:20:18 GMThttps://devzone.nordicsemi.com/thread/342374?ContentTypeID=1Tue, 07 Dec 2021 14:20:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0f6298e3-dda0-43d4-a6c1-6e1e5a6c8494Kenneth<p>Hello,</p> <p>I suggest to open the HID examples, these should how you can for instance call app_sched_event_put():<br /><img src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1638886810097v1.png" alt=" " /></p> <p>Kenneth</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/342360?ContentTypeID=1Tue, 07 Dec 2021 14:02:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0f9b16f0-c05e-4605-8fd9-748772d05fc5Bert Thomas<p>Never mind, found out that I had to use&nbsp;SOFTDEVICE_HANDLER_APPSH_INIT.</p><div style="clear:both;"></div>