Auto pairing and connect nrf51822 with 2 iphones

[alikob]

Hello,

I have a project based on nrf51822 and SDK 10/S130. I have read about advertising mode and whitelist, but could not find my answer for my issue anywhere in the zone. I am trying to pair and connect 2 iphone with my project, not at the same time. Is it possible to pair and auto connect to iphone 1, and then disconnect and use the second iphone to pair and connect. What I am getting is this error on iphone 2: “pairing unsuccessful pairing took too long, Make sure “dev_name” is turned on , in range and is ready to pair. Also the way I disconnect the first iphone is by moving it into some other room with long distance away to make sure that I see “dev_name Not Connected” on iphone 1, and also I see the led start blinking showing its advertising again. If I bring the iphone 1 close to nrf51822, I see instant pairing and connection automatically.

Thanks

[endnode]

On embedded device like nRF5x chips all the magic lives in firmware. So ultimate question is: what bloody firmware you have in that thing?:) If it is your customized FW then you should be able to debug how it advertise and what it does on Security Manager level once the connection is established. If you use untouched FW from Nordic SDK then we should be able to see in the code what it can do in terms of paired and bonded devices.

Also in such cases having BLE sniffer or similar RF analyzer trace is very helpful (actually that's the way how most of BLE developers would debug this case because it's crucial to see if the second phone connects at all and if then in what stage it hangs).

[alikob]

Almost every example from Nordic SDK 10.x.x I use has the same behavior. i.e. hid_keyboard, hid_mouse, ble_hrs, ble_bps, adn I do use them untouched.

[endnode]

Then you will need BLE trace (or at least this looks like fastest way to me).

[alikob]

@endnode, The behavior I am looking is just like my cell phone in my GS350, when I enter to my car, bang my car pair to my ipohne and ready to go. Now next day my wife use my car and use her cell iphone, again bang it recognize hers like a magic and ready to go. Unless if my car is not using BLE bluetooth, Can you at least tell me which one of the Nordic example works like that?

[endnode]

I do understand what is intended behavior and I do understand your frustration. Not being fan of Apple products I would say throw your shitty phone out and use something better. But because that's probably not what you are looking for I say: debug what is happening between that phone and BLE peripheral by reading the bluetooth exchange log. For that you can use any Nordic DK with their sniffer (with little bit of luck).