https://devzone.nordicsemi.com/f/nordic-q-a/64477/midi-ble-example-nrf52840-sending-dataHi I&#39;m doing the Bluetooth GATT: How to Design Custom Services &amp; Characteristics [MIDI device use case] example ( https://www.novelbits.io/bluetooth-gatt-services-characteristics/ ) And I want to send a random value (i/0 want to save a random value toen-USTelligent Community 13Thu, 06 Aug 2020 03:09:49 GMThttps://devzone.nordicsemi.com/thread/263326?ContentTypeID=1Thu, 06 Aug 2020 03:09:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:206746f6-626a-4268-af6d-00f0fe288b96Soojin<p>Wow Thanks!<br />This would be a great help studying!!!!<br /><br />Have a great day:)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/263226?ContentTypeID=1Wed, 05 Aug 2020 12:35:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cc131334-eaf6-45b4-b5b8-b14bc4a1b692JONATHAN LL<p>Hi Soojin,<br /><br /></p> <p>The&nbsp;ble_midi_data_io_value_update() function (in midi_service.c) takes care of the value update in the novelbits example so maybe start there if you want to figure out how to change the i/o value.&nbsp;</p> <p>I would recommend looking&nbsp;at this example guide from nordic on MIDI,&nbsp;<a href="https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/midi-over-bluetooth-le?CommentId=f116764b-41d4-4cf5-8839-5e4f664c27ee" rel="noopener noreferrer" target="_blank">https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/midi-over-bluetooth-le?CommentId=f116764b-41d4-4cf5-8839-5e4f664c27ee</a>&nbsp;<br /><br />Regards,<br />Jonathan</p><div style="clear:both;"></div>