https://devzone.nordicsemi.com/f/nordic-q-a/17606/how-to-write-to-cccd-in-another-nodeSo I&#39;m still trying to get my way around the DFU service implementation, and I&#39;m currently having trouble with the first step, which is to enable the control point notification (Write 0x0001 to CCCD). I checked the Characteristics tutorial, but I stillen-USTelligent Community 13Wed, 09 Nov 2016 11:49:26 GMThttps://devzone.nordicsemi.com/thread/67701?ContentTypeID=1Wed, 09 Nov 2016 11:49:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1592c167-4e96-45d7-88a5-208e2e046088Andy<p>Hi Hung, thanks for the advice! I checked the NUS_C project and got the notification up and running!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/67700?ContentTypeID=1Wed, 09 Nov 2016 11:23:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3145fca7-57af-409d-979e-05ff82776a43Hung Bui<p>Hi Andy,</p> <p>Have you tried any central examples we have ? For example the ble_app_hrs_c or the ble_app_uart_c, in those examples we enabled the characteristic CCCD on the peer device, very similar to what you need to do in the DFU application.</p> <p>Please find the ble_nus_c_rx_notif_enable() function called in main.c in ble_app_uart_c.</p> <p>I suggest you to get familiar with normal central application before you move to the DFU.</p><div style="clear:both;"></div>