https://devzone.nordicsemi.com/f/nordic-q-a/22772/adding-midi-servicesI am using a usual uart to bluetooth application and it works great, but I would like to set this application to be a known apple midi device, it seems I only have to add a specific service. According to Apple, you need to set up a service like thisen-USTelligent Community 13Fri, 16 Jun 2017 11:51:44 GMThttps://devzone.nordicsemi.com/thread/89524?ContentTypeID=1Fri, 16 Jun 2017 11:51:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:70bbd0c2-d859-44ed-a6b7-36894d4b5f49Sigurd<p>Hi,</p> <p>According to the specification, the BLE MIDI device must request a connection interval of 15 ms or less. A lower connection interval is preferred in most applications of MIDI. The lowest allowed connection interval for BLE is 7.5 ms, so you should therefore set the connection interval like this:</p> <pre><code>#define MIN_CONN_INTERVAL MSEC_TO_UNITS(7.5, UNIT_1_25_MS) #define MAX_CONN_INTERVAL MSEC_TO_UNITS(15, UNIT_1_25_MS) </code></pre> <p>Unfortunately we don&#39;t have any full BLE MIDI examples or documentation for this. There are a few discussions on devzone that might be of interest though. Maybe especially <a href="https://devzone.nordicsemi.com/question/103387/midi-ble-example-nrf52dk/?answer=103393#post-id-103393">this one</a>.</p><div style="clear:both;"></div>