In the examples apps for ble uart, when a central connects, does a ble uart peripheral have access to any central identity information?

[Robin]

Hello Nordic Pros,

I haven't been able to chase this one down on my own, so any help is greatly appreciated...

We are developing a product and app that connect to either an iPhone in the field, or a ble uart central during test and calibration.

Once a ble uart central device connects to a peripheral, can the peripheral query the id of the central to know what it is connected to?

Thanks

Robin @ TL

[Vidar Berg]

Hello,

You can get the address of the connected peer device from the connection event. But for the iPhone at least it will only be a private random address (updated every 15 minutes) so you'd need its identity resolving key (IRK - exchanged during bonding) to uniquely identify it from other devices. 

Would it be enough to determine that you're connected to a test and calibration device which I assume you have more control over? Could you assume that the connected central is test and calibration device if it starts sending calibration&test commands? 

[Robin]

Hello Vidar,

It is good to hear from you again.

Over the weekend, I came up with a scheme to ID the connecting end.  I am testing that now.  The "central" end is working.  iPhone end not quite.  In case anyone is interested, and to get your review (which I truly appreciate), I will post when I get back to my computer today.

Thank you again for all the continued support.

Robin @ TL

[Vidar Berg]

Hi Robin,

Likewise:) Another possible approach, if it doesn't work, is to attempt reading out the device name of the central after you've connected. The drawback is increased overhead due to the additional service discovery and a read procedure. 

https://devzone.nordicsemi.com/f/nordic-q-a/49837/reading-the-central-device-name-smart-phone-in-nrf52dk-peripheral-and-printing-on-the-terminal/199126#199126