nRF5340 - peripheral disconnection because out of range

[Gabriele]

Hi,
I'm working on nRF5340 Bluetooth LE peripheral (building environment: NCS 2.6.1, Zephyr 3.5.99).
The net core is populated with the Zephyr HCI RPMsg sample LE Controller as it is.
I experience a disconnection from peer with reason BT_HCI_ERR_CONN_TIMEOUT.
This occurs because the peer is moved out of range.

How to get the application notified in advance of this disconnection event ? 

[Simonr]

Hi Gabriele

Sorry, but what function are you referring to failing to send data here exactly? From the log, the error seems to come after the advertising fails to start and reporting that the devices are not connected, so I guess you first of all need to reconnect before trying to restart sending data between the devices.

Best regards,

Simon

[Gabriele]

Hi Simonr

I think that advertising should restart before the central peer could re-connect. I want the device be able to restart the advertising regularly 

[Simonr]

Gabriele said:

I think that advertising should restart before the central peer could re-connect

Yes, that's correct, but it seems like your application tries sending data instead of starting advertising. After a disconnect occurs I recommend you add a function that starts advertising again and quit the transmissions of data that should be done in a connection.

Best regards,

Simon

[Gabriele]

That's correct.

The disconnection callback already has a function for restarting advertising. Usually it works fine. What is missing is a function that aborts any pending transmission of data. How to do that ?