https://devzone.nordicsemi.com/f/nordic-q-a/60382/purpose-of-on_connect-function-in-ble_nus-cHello, I am studying the peripheral/ble_app_uart and peripheral/ble_app/template examples to understand the proper way to build a peripheral with our own set of services and characteristics. I&#39;m also studying this tutorial: https://devzone.nordicsemien-USTelligent Community 13Sat, 25 Apr 2020 23:37:45 GMThttps://devzone.nordicsemi.com/thread/246637?ContentTypeID=1Sat, 25 Apr 2020 23:37:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8a217355-c4b7-4bb3-95ff-6c2c30c47482riceman0<p>thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/245491?ContentTypeID=1Mon, 20 Apr 2020 10:58:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7d9ebd7d-a309-451a-b8de-dc4547728a36Simonr<p>Hi</p> <p>The on_connect function is there to handle the BLE_GAP_EVT_CONNECTED event from the SoftDevice when the ble_nus_on_ble_evt() function is called. When using other services than NUS, this function is called from ble_conn_params.c, so it should be handled by the SDK when creating your own characteristics as well.</p> <p>You can check out the ble_custom_service example over at our GitHub for a more complete tutorial on how to set up custom services and characteristics <a href="https://github.com/NordicPlayground/nRF5x-custom-ble-service-tutorial">here</a>.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>