nRF52840 WebBLE failure with IOS

[sethu]

Hello All, 

We have designed a custom board for our product and everything pretty much works fine. But now that we have decided to stick to WebBLE, we are facing some issues with IOS devices.
So, it is known that IOS does not natively support  WebBLE, so we are testing 3rd party web browser that supports the functionality. We have tried a couple of apps such as Bluefly, ConnectBrowser, and so on, but with all of them we seem to get the same error message on the nRF side which states:  <wrn> bt_l2cap: Ignoring data for unknown channel ID 0x003a.
This message shows up and the program does not progress any further. I was wondering if someone can shed some light on this warning message and why it shows up. 
Any help would be appreciated. Apologies if I have not provided enough information, please feel free to ask for more info.

More info:
- Board : nRF52840
- Zephyr OS build v2.6.0-rc1-ncs1
- NCS v1.6.1

TIA, 
Sethu 

[JONATHAN LL]

Hi,

Can you provide a sniffer trace, difficult to say what is going on whiteout more details. 

https://infocenter.nordicsemi.com/topic/ug_sniffer_ble/UG/sniffer_ble/intro.html?cp=10_5 

Regards,
Jonathan 

[sethu]

Hey, 

Thanks for getting back to me.
Please find attached the sniffer trace capture file.
My initial thought was that the MTU size was too big, but it seems to be fine with it.
So, not really sure what's going wrong.
nRF_capture_IOS.pcapng
Regards, 
Sethu

[JONATHAN LL]

Hi Sethu,

Nothing obvious from the sniffer, can you explain more what you intend to do and what is not working after the " <wrn> bt_l2cap: Ignoring data for unknown channel ID 0x003a." shows up.  

This message shows up and the program does not progress any further.

What do you expect to happen, where does it stop? What does not work.

If you are trying to enable notifications and nothing happens then you can check the code on the nRF device. See if it is in fact sending notifications or if it try's and fails. What gets returned? 

Print what bt_hrs_notify(heartrate); returns to the log, what does it show?

Regards,
Jonathan

[sethu]

Hey Jonathan,

Thanks for getting back to me.
But after further testing, it doesn't seem like a problem caused by the nordic device.
I'm currently looking into the implementation of the web browsers to figure the problem out.
Sorry about taking up your time.

regards, 
Sethu

[JONATHAN LL]

Thanks for updating!

Regards,
Jonathan