https://devzone.nordicsemi.com/f/nordic-q-a/99681/why-does-gatt-discovery-manager-only-allow-one-gatt-serviceAs stated in the title, why can only one Gatt service in the central device be used? For example, we may want to use BAS and NUS, but only one of them can be used. In the sample source code, only the main service (NUS in this case) is used. Callingen-USTelligent Community 13Tue, 16 May 2023 08:17:51 GMThttps://devzone.nordicsemi.com/thread/425788?ContentTypeID=1Tue, 16 May 2023 08:17:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4bf6cc6c-765d-4444-83eb-8782c3be6252Yoshihiro Goto<p>Dear Vidar,</p> <p>Thanks for your help.</p> <p>I confirmed that it works by using threads to GATT Discover sequentially.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/425347?ContentTypeID=1Fri, 12 May 2023 12:55:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:588cfff8-748b-4c3d-a5b7-b29598e48c76Vidar Berg<p>Hello,</p> <p>bt_gatt_dm_start() is asynchronous&nbsp;and you need to wait for the callback before you start discovery of the next service. From the documentation:</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1683896076399v1.png" alt=" " /></p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>