https://devzone.nordicsemi.com/f/nordic-q-a/24860/sdk14-static-service-structuresThe *_DEF macros in SDK14 define service structures as static. This means that the application level functions for a service must all be called from the same c file where the structure was defined (since the structure must be passed as a parameter). en-USTelligent Community 13Wed, 06 Sep 2017 12:44:20 GMThttps://devzone.nordicsemi.com/thread/97909?ContentTypeID=1Wed, 06 Sep 2017 12:44:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:28415d20-92af-4bc7-8d4e-019811c3f29eovrebekk<p>Hi Daniel</p> <p>I don&#39;t think there are any official Nordic recommendations on this, but what I would recommend is to abstract away the service init and configuration into a separate module. This module could have a more application specific interface, abstracting away the BLE API&#39;s, and then you could easily share this module between multiple files.</p> <p>This is similar to how it is done in our reference design software, which are typically more complex than the SDK examples.</p> <p>Best regards<br /> Torbjørn</p><div style="clear:both;"></div>