client side example of LBS using NCS

[Dan in Colorado]

Back in SDK 17 or so there were code samples for both the client and server side of the LED button service.

What happened to the client/central example when you migrated to NCS?  Is it still available under a different name?

I'm trying to run an nrf5340 as the central (in a dual role setup).  I'd like to call LBS specific discovery functions (i.e. bt_lbs_client_handles_assign() and bt_lbs_client_subscribe_button()) but they don't appear to exist..

Searching the internet, I see examples (likely from old SDK versions) that want me to include <client_LBS.h>  but this file does not exist in the ncs\v3.2.1 directory structure anywhere.

I'm running NCS v3.2.1 in VScode 

Note: your AI assistant directed me the the NUS central example, but it calls bt_nus_handles_assign and bt_nus_subscribe_receive which are exactly the analogous calls I'd like to make for LBS

[Dan in Colorado]

I did not find the LBS peripheral example helpful for making a central  implementation.

So the answer is to write my own LBS_Client.  Since my end goal is to migrate from a (working) example of LBS client to a custom service, can I expect to be able to write an entirely custom service client based off NUS_Client or are there assumptions about how a service is organized that I must comply with?

Also, note, this central is actually a dual role nrf5340 that serves as a peripheral to an upstream host.  Does that change which example I should work with?

[Lorenzo Amicucci]

Hi Dan

I used Vibe coding (copilot github chat on vs code) to get LBS Central. For some reasons, I named it blinky (as it reminds the nrf Blinky app from nordic, which also implements a central LBS). 

I tested on NCS 3.2.4 and with two nRF54L15DK. button works in both directions (pushing Button 0 on either DK will trigger an LED on the other DK). 

The zip includes the code for central. For peripheral LBS, use the one in the SDK. 
I cannot guarantee it builds on nRF53, and given this is done by AI, take it with a grain of salt.

I hope it helps. Please also see our DevAcademy Bluetooth course where we show how to build custom service.

BR
Lorenzo 

 blinky_central.zip

[Edvin]

Thank you, Lorenzo Amicucci 
This application seems to do what a central_lbs sample would do. It scans for a device advertising with the LBS UUID, connects to it, enables notifications, and it can send data back to the peripheral_lbs.

Best regards,

Edvin