BLE Advertising and Multiple Client Connections

[Shira]

Hi NORDIC Support Team,

I am using the nrf5340 and attempting to enable a BLE connection on the board with 2 clients simultaneously.

The issue I'm encountering is that after advertising the device, both clients can see it. However, after one client connects, the second client can no longer connect. In a subsequent scan, the second client cannot find the advertising device.

As a workaround, re-advertising the device allows the second client to connect. But is it possible, in principle, to connect both clients one after the other within the same advertising window? Is this supported at the infrastructure level?

Thank you for your assistance.

[Priyanka]

Hi Shira,

Please take a look at this ticket.

Make sure to set update the number of connections in the prj.conf as mentioned in the ticket, appropriately and this should solve your issue.

Regards,

Priyanka

[Shira]

Hi Priyanke,

Thank you for the quick response.

I tried the configuration mentioned in that ticket; however, the problem persists.

Moreover, after I build the system, even though I set CONFIG_BT_CENTRAL to y, it seems that it saves this setting with a value of n.

I've attached the configuration files prj.conf and child_image/hci_ipc.conf.

5282.prj.conf

7357.hci_ipc.conf

Perhaps I've missed something in this configuration layer? Is it possible that some other configuration is overriding the settings above?

Thanks a lot,

Shira

[Priyanka]

Hi,

Could you tell me which SDK version you are working with?

-Priyanka

[Priyanka]

Could you test this sample? I tried this sample with nRF Connect SDK version v2.6.1 and it works for me. Please let me know if you are using sysbuild. Please keep this sample only as a reference.

Case_339642.zip

-Priyanka