https://devzone.nordicsemi.com/f/nordic-q-a/21871/about-the-bluetooth-uart-data-sentBecause I need to receive the serial interface in the event handler of the serial data communication protocol (custom) send out via bluetooth, a set of protocols to 25 bytes, to head to tail, the 20 bytes sent via bluetooth;Assistant when I use a serialen-USTelligent Community 13Mon, 08 May 2017 12:03:27 GMThttps://devzone.nordicsemi.com/thread/85876?ContentTypeID=1Mon, 08 May 2017 12:03:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ad802019-4d9f-4c37-9d87-026e59713359Hung Bui<p>Hi happy,</p> <p>I don&#39;t fully get what you said in your question. But <a href="https://devzone.nordicsemi.com/tutorials/23/">here is a tutorial on scheduler</a> you may want to try. Please let me know if you have an issue.</p><div style="clear:both;"></div>