https://devzone.nordicsemi.com/f/nordic-q-a/52428/about-operations-on-opening-notificationThere is now a TI CC2451 Bluetooth module as a reference. Using nRF connect to monitor the log content, it is found that when the mobile phone is connected to Bluetooth and the module uploads data to the mobile phone, the module will send relevant instructionsen-USTelligent Community 13Wed, 25 Sep 2019 02:43:51 GMThttps://devzone.nordicsemi.com/thread/211652?ContentTypeID=1Wed, 25 Sep 2019 02:43:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7d15e1d3-3877-4a02-ba2f-d6793727a4b1June6<p>Hi,</p> <p>That&#39;s not what I mean, but I&#39;ve solved my problem.</p> <p>Thanks！</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/211201?ContentTypeID=1Mon, 23 Sep 2019 11:03:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f5b07695-20a6-4942-bc91-9c00f67c6f77Amanda Hsieh<p>Hi,&nbsp;</p> <p></p> <p>If I understand correctly, you mean indication and confirmation as the following figure</p> <p><img style="float:left;" alt=" " height="330" src="https://raw.githubusercontent.com/sigurdnev/sigurdnev.github.io/master/data_transfer.png" width="626" /></p> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span>Then you can take a look at the&nbsp;</span><a title="Glucose Application" href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/ble_sdk_app_gls.html?cp=5_1_4_2_2_11">Glucose Application</a>&nbsp;example.&nbsp;</div> <div></div> <div>-Amanda H.</div> <div> <div></div> </div><div style="clear:both;"></div>