iOS BLE cannot correctly read the model number.

[Leo Mo]

After updating from SDK V2.1.3 OTA to SDK V2.9.0, iOS cannot correctly read data such as the model number, but Android can read it normally.

Turn off Bluetooth in the system, turn it back on, and it can be read normally after connecting.

[Leo Mo]

Hi Simonr,

I will try to capture the communication . You can also use the example I provided for testing.

/cfs-file/__key/communityserver-discussions-components-files/4/peripheral_5F00_ancs_5F00_client_5F00_sdk_5F00_v2.1.3.zip

/cfs-file/__key/communityserver-discussions-components-files/4/peripheral_5F00_ancs_5F00_client_5F00_sdk_5F00_v2.9.0.zip

Best regards,

Leo Mo

[Leo Mo]

Hi Simonr,

I used this method to capture packets, but it's still difficult to capture all of them.

ancs_client_sdk_v2.1.3_to_v2.9.0.pcapng

Best regards,

Leo Mo

[Einar Thorsrud]

Hi Leo,

Can you try to sniff the bonding procedure as well initially so that we get the key, or alternative build the old v2.1.3 based firmware with CONFIG_BT_LOG_SNIFFER_INFO=y and insert the key into nRF Sniffer so that it can decode the encrypted packets? Without it, we do not see the content of the ATT packets, which we are interested in in the trace. See Sniffing a connection between bonded devices.

How do you build the samples and do they run on a DK so that I can test on my end? Please share the full build commands for both. I would like to test this on my end.

That said, I got the v2.9 version built, but there was failure on the v2.1.3. That said, I was first interested in verifying that CONFIG_BT_GATT_SERVICE_CHANGED=y was enabled in the .config in the build, and it was. So the service changed characteristic is there in the old, which is good and essential. So this looks good so far, and I do not have a clear idea of what the cause here is.

Br,

Einar

[Leo Mo]

Hi Einar,

You can download these samples to test(custom nrf52840dk).

peripheral_ancs_client_sdk_v2.1.3.zip

peripheral_ancs_client_sdk_v2.9.0.zip

BR,

Leo

[Einar Thorsrud]

Hi Leo,

Thank you. Can you share the exact way you build it (either with the command if you build from the command line, or a screenshot showing your build configuration if you build from VS Code)?