nRF52840 bonded but no connection

RE: nRF52840 bonded but no connection

user3586 — Thu, 12 May 2022 15:09:17 GMT

Hi,

I have done the following procedure:

- Device switched on (advertising)

- Android Bluetooth is used to bond the device to my smartphone: device seems to remain 'connected'

- Application is launched (our application or nrF Connect): device can not be seen

- Then, bluetooth in the smartphone is switched off --> Device starts advertising again

I have tried to save sniffer log using a developement board together with WireShark, but Wireshark is not catching more frames once device has been bonded to the smartphone. Any suggesiton?

Regards,

Dani.

RE: nRF52840 bonded but no connection

user8164 — Wed, 02 Mar 2022 15:18:15 GMT

Hi,

So what you see, is that the device seems to be connected to the phone in the background, but not visible in your app?

Do you have a sniffer trace from when this happens?

Regards,
Terje

RE: nRF52840 bonded but no connection

user3586 — Fri, 25 Feb 2022 14:56:50 GMT

Hi,

The device is not visible from nRF Connect, neither from any other type of Smartphone (tested with different Android and IoS devices).

Having the device 'connected' to the first smartphone, the device is seen again from any other device when bluetooth is switched off in the first smartphone.

It seems as the device remains blindy 'connected'

RE: nRF52840 bonded but no connection

user8164 — Fri, 25 Feb 2022 12:59:56 GMT

Hi,

When the device has been connected to the phone, but not visible from your app, is it visible in nRF Connect on that same phone? I suspect it will be possible if using the correct API, or that there may be some restrictions on certain device types for the given smartphone OS and version.

We may be able to provide better pointers if you provide information about what smart phone and OS, and what kind of device (is it for instance a HID device?)

Regards,
Terje