Bluetooth Low Energy Fundamentals Lesson 5 Exercise 2 does not work

RE: Bluetooth Low Energy Fundamentals Lesson 5 Exercise 2 does not work

Edvin — Wed, 20 Nov 2024 08:32:10 GMT

It works on my end. Did you get the popup with the 6-digit paskey?

BR,
Edvin

RE: Bluetooth Low Energy Fundamentals Lesson 5 Exercise 2 does not work

J0sh1101 — Mon, 18 Nov 2024 16:23:47 GMT

Hi,

[quote userid="26071" url="~/f/nordic-q-a/116282/bluetooth-low-energy-fundamentals-lesson-5-exercise-2-does-not-work/510921"]What app is that? The nRF Connect for Android? [/quote]

Yes, the app is the nRF Connect for Android.

[quote userid="26071" url="~/f/nordic-q-a/116282/bluetooth-low-energy-fundamentals-lesson-5-exercise-2-does-not-work/510921"]Can you please upload the peripheral application that you are testing on? This will make it a lot faster for me to reproduce.[/quote]

I used the code from the Nordic Academy. Here is the code.

Kind regards

RE: Bluetooth Low Energy Fundamentals Lesson 5 Exercise 2 does not work

Edvin — Mon, 18 Nov 2024 14:44:55 GMT

[quote user="J0sh1101"]I have to 'force stop' the app on Android and then re-open it; only then can I connect, whitelist and bond again.[/quote]

What app is that? The nRF Connect for Android?

Can you please upload the peripheral application that you are testing on? This will make it a lot faster for me to reproduce.

Best regards,

Edvin

RE: Bluetooth Low Energy Fundamentals Lesson 5 Exercise 2 does not work

J0sh1101 — Thu, 14 Nov 2024 13:55:33 GMT

Thanks for the update. This issue is a bit frustrating - I'm not sure if the problem is with the nRF Connect app or if something is wrong with the BLE peripheral. ( I tried to erase the whole flash with "erase all and flash" and it did not help.)

On the first run, everything works as expected: connecting, whitelisting and bonding all work fine. However, when I try to delete everything (bonding and whitelisting) on both the phone and the peripheral, I can no longer connect. To make it work again, I have to 'force stop' the app on Android and then re-open it; only then can I connect, whitelist and bond again.

I’ve repeated this process a few times and encountered the same outcome each time.

Could anyone else try to reproduce this issue? I’m hopeful this can be resolved in a future update.

Thanks again!

RE: Bluetooth Low Energy Fundamentals Lesson 5 Exercise 2 does not work

Edvin — Thu, 14 Nov 2024 08:57:22 GMT

I think you need to maintain this list yourself. This means adding a new device to the list when you bond, and clearing the list if you clear all bonding data, or removing one device from the list if you just delete the bonding information for that device specifically.

Best regards,

Edvin

RE: Bluetooth Low Energy Fundamentals Lesson 5 Exercise 2 does not work

Matt Rife — Wed, 13 Nov 2024 01:42:39 GMT

Hi Edvin,

When using the whitelist to filter connections, is it necessary to re-add the device to the whitelist every time after clearing bonding information, or should it automatically recognize the paired device if bonding is set up again?

Incredibox Colorbox Mustard

RE: Bluetooth Low Energy Fundamentals Lesson 5 Exercise 2 does not work

Edvin — Tue, 12 Nov 2024 20:19:32 GMT

[quote user=""]Is this correct?[/quote]

Yes, that sounds about right.

When you try with your phone, can you please make sure that there is no old bonding information stored on the phone for the nRF? That means, go to your phone settings -> Bluetooth, and look for the device in "known devices" or something like that. Then click something like "Forget device". After that, to be sure that the whitelist is properly deleted from your peripheral, erase the device (either in command line, using "nrfjprog --eraseall", and re-program it, or use the nRF Connect for VS Code, and click the small icon next to "Flash":

To make sure that no old bonding information is stored on the nRF either. Then try again, knowing that both devices shouldn't contain any bonding information.

If you are still struggling to get it to work, please provide your current application, and/or a sniffer trace of the connection attempt (you can use the nRF Sniffer for Bluetooth LE), and I can have a look.

Best regards,

Edvin