service changed problem

RE: service changed problem

run_ar — Thu, 04 Feb 2021 08:54:21 GMT

Service changed is only sent if the peer subscribes to service changed indications, which they should be doing if bonding is supported. Assuming you are using the peer manager it will send a service changed indications to bonded peers -> Peer Manager

Not sure, but I think the wireshark sniffer can capture just works legacy pairing. But for other security levels it is likely the link is encrypted before the service changed indications can be captured by the sniffer.

RE: service changed problem

zero — Wed, 03 Feb 2021 01:00:44 GMT

NRF_SDH_BLE_SERVICE_CHANGED is set to 1, if the service changes, will the application automatically send service changed?
Can I use 52840-dongle and Wireshark to capture service change instructions?

RE: service changed problem

run_ar — Tue, 02 Feb 2021 11:57:21 GMT

Hi,

iOS will hide certain services used by the system from the application. So you will not see the service changed characteristic in nRF Connect for iOS.

To verify the device actually sends service changed indications you could capture an airtrace of the bluetooth traffic and check that the service changed indication is sent.