https://devzone.nordicsemi.com/f/nordic-q-a/76630/nrf-52810-radio-eventHi. I am using the 52810 as an advertiser with a 1 sec interval. I would like to activate a led at each advertising transmission, but the S112 softdevice does not support radio_event_handler. Can I test any flags that tell me when it&#39;s on transmissionen-USTelligent Community 13Fri, 25 Jun 2021 09:23:21 GMThttps://devzone.nordicsemi.com/thread/317163?ContentTypeID=1Fri, 25 Jun 2021 09:23:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b4c616d6-add1-4c55-b5a5-2416b7f84b3fremtec<pre class="tw-data-text tw-text-large XcVN5d tw-ta" id="tw-target-text" dir="ltr"><span class="Y2IQFc" lang="en">Thanks Susheel. I thought 52810 / S112 did not support radio event. I try immediately. Thanks for the help.</span></pre><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/316757?ContentTypeID=1Wed, 23 Jun 2021 13:24:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ab220e43-a172-416b-889f-d99ccc19802aSusheel Nuguru<p>You need to use <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsds_s112%2FSDS%2Fs1xx%2Fradio_notif%2Fradio_notification.html&amp;cp=4_7_0_0_10">radio notifications</a>&nbsp;using <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s112.api.v7.2.0%2Fgroup___n_r_f___s_o_c___f_u_n_c_t_i_o_n_s.html&amp;cp=4_7_0_1_2_6_2_39&amp;anchor=gac2dc8aae2c68a2afa1a77340ad59d789">sd_radio_notification_cfg_set&nbsp;&nbsp;</a>to get an event in case of radio active/inactive state changes so that you get a hint of this. Unfortunately this would not be easy for application if there are more roles than one in your application as radio notification will not tell you which role this event is for.</p><div style="clear:both;"></div>