https://devzone.nordicsemi.com/f/nordic-q-a/85208/what-document-related-to-bleCan anyone explain for me about ble_app_uart function ? this example is too few comments about how to function work. So I can understand flow how to nRF receive data from mobile phone ? So can you suggest for me some documents related to this topic ?en-USTelligent Community 13Mon, 28 Feb 2022 08:09:55 GMThttps://devzone.nordicsemi.com/thread/355179?ContentTypeID=1Mon, 28 Feb 2022 08:09:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:db1fd51f-2edd-4318-b0db-23a856399cb0Karl Ylvisaker<p>Hello,</p> [quote user=""]Can anyone explain for me about ble_app_uart function ?[/quote] <p>You could read about <a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/ble_sdk_app_nus_eval.html">how the example works here</a>. Is there anything specific about the example you would like me to elaborate on?</p> [quote user=""]So I can understand&nbsp; flow how to nRF receive data from mobile phone ?[/quote] <p>If you would like to understand more about the technicalities for how the devices are communicating with each other <a href="https://devzone.nordicsemi.com/guides/short-range-guides/b/bluetooth-low-energy/posts/ble-advertising-a-beginners-tutorial">I highly recommend part II and III of this tutorial series</a>&nbsp;which details how services and characteristics with CCCD is used to transfer data between devices - exactly like it is done in the ble_app_uart example.<br /><br />Best regards,<br />Karl</p><div style="clear:both;"></div>