After Input passkey, Pairing Completing is so late(nRF54L15)

RE: After Input passkey, Pairing Completing is so late(nRF54L15)

Taron — Tue, 22 Apr 2025 05:48:39 GMT

hi, i just tried to make new project and new setting(i dont know what add or remove) then now it's working now. thanks for your help

RE: After Input passkey, Pairing Completing is so late(nRF54L15)

Simonr — Tue, 15 Apr 2025 07:45:17 GMT

I can confirm that I reproduced it on my end now, but there are a few issues with the project as I had some trouble connecting initially as well seemingly because the nRF54L15 didn't respond to the connection request. The sniffer log as well seems to go through multiple pairing requests before it finally goes through, so I think there's something on the nRF54L15 side that's not handling incoming events correctly, although I'm not able to tell what exactly.

I'd strongly suggest going through lessons 3-5 in the Bluetooth LE course on our DevAcademy to see how to correctly handle Bluetooth LE connections, data exchanges and pairing.

Best regards,

Simon

RE: After Input passkey, Pairing Completing is so late(nRF54L15)

Taron — Mon, 14 Apr 2025 00:10:55 GMT

1.Can you upload the sniffer log as a .pcapng file if possible as that will make reviewing it a lot easiser.

devzone.nordicsemi.com/.../4276.11_5F00_nRF54L15_5F00_Sniffer-Log.pcapng

2.For reproduction, will it be sufficient to simply copy the main and conf file into the peripheral_uart project to build and run your project and thus reproduce the issue?

- I'm not sure, probably it will reproduce the issue

RE: After Input passkey, Pairing Completing is so late(nRF54L15)

Simonr — Fri, 11 Apr 2025 11:30:37 GMT

Can you upload the sniffer log as a .pcapng file if possible as that will make reviewing it a lot easiser.

For reproduction, will it be sufficient to simply copy the main and conf file into the peripheral_uart project to build and run your project and thus reproduce the issue?

Best regards,

Simon

RE: After Input passkey, Pairing Completing is so late(nRF54L15)

Taron — Fri, 11 Apr 2025 02:40:52 GMT

Hi Simonr.

I answer your questions as follows:

1. Are you connecting the nRF54L15 to a phone here or to another BLE device?

- phone

2. you do in fact input the passkey on the other device and press okay during this 1minute 50 second delay between the passkey log message and security changed log message, correct?

- yes

3. you could upload a BLE sniffer log

- please check the BLE sniffer log file

4. what sample you used as a base

- peripharl_uart

devzone.nordicsemi.com/.../nrF54L15_5F00_Sniffer-Log.csv

devzone.nordicsemi.com/.../5852.11_5F00_nRF54L15_5F00_Sniffer-Log.pcapng

RE: After Input passkey, Pairing Completing is so late(nRF54L15)

Simonr — Thu, 10 Apr 2025 11:44:43 GMT

Are you connecting the nRF54L15 to a phone here or to another BLE device? And just to clarify, you do in fact input the passkey on the other device and press okay during this 1minute 50 second delay between the passkey log message and security changed log message, correct?

It's hard to tell from this log what exactly is wrong, and I think the best would be either if you could upload a BLE sniffer log so we can see what's going on over the air, or if you can let me know what sample you used as a base so I can try reproducing this on my end.

Best regards,

Simon