nRF52840, Pairing through passkey

RE: nRF52840, Pairing through passkey

Amanda Hsieh — Wed, 03 Jul 2024 19:26:43 GMT

Please create a new support case for the new issue.

RE: nRF52840, Pairing through passkey

valeriy_simakov — Wed, 03 Jul 2024 05:50:02 GMT

I'm using bt_conn_le_create

RE: nRF52840, Pairing through passkey

valeriy_simakov — Wed, 03 Jul 2024 05:17:10 GMT

Hi,
For some reason, I got BT_HCI_ERR_UNKNOWN_CONN_ID during the connection. Could you please help me?

RE: nRF52840, Pairing through passkey

Amanda Hsieh — Mon, 06 May 2024 16:53:40 GMT

Hi,

You can refer to Bluetooth: Central UART which can work with Peripheral UART that requires the passkey.

-Amanda H.

RE: nRF52840, Pairing through passkey

valeriy_simakov — Sat, 04 May 2024 05:21:42 GMT

H Amanda Hsieh
This is an example for peripheral device.
The project was on pause for some time and now it continues.
So, my device is central device and I couldn't get stable pairing with peripheral device with display which provides passkey code.
The scenario:
1. From the start, I get a successful pairing (34931_pairing_OK_212.txt devzone.nordicsemi.com/.../34931_5F00_pairing_5F00_OK_5F00_212.txt).
2. If I reboot my device and try to reconnect, I get a pairing error (34931_pairing_fail2_212.txtdevzone.nordicsemi.com/.../34931_5F00_pairing_5F00_fail2_5F00_212.txt)

So, I get event 'BT_HCI_EVT_DISCONN_COMPLETE' for some reason.
I get the handler there from the function 'bt_recv' (hci_core.c).
And I couldn't understand the reason. Could you please help with that issue?

RE: nRF52840, Pairing through passkey

Amanda Hsieh — Fri, 15 Dec 2023 14:34:51 GMT

Hi,

I would suggest taking a look at this tutorial

https://academy.nordicsemi.com/courses/bluetooth-low-energy-fundamentals/lessons/lesson-5-bluetooth-le-security-fundamentals/topic/blefund-lesson-5-exercise-1/

-Amanda H.

RE: nRF52840, Pairing through passkey

valeriy_simakov — Fri, 15 Dec 2023 07:30:17 GMT

Hi,
I have a problem with pairing. For some reason, a got an issue in callback 'security_changed '.

static bt_conn_cb conn_cb{

.security_changed = OnSecurityChanged,

};

void Ble::OnSecurityChanged(bt_conn* conn, bt_security_t level, bt_security_err err)

{

char addr[BT_ADDR_LE_STR_LEN];

bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));

if (!err)

{

printk("Security is changed: %s level %u\n", addr, level);

}

else

{

printk("Security is failed: %s level %u err %d\n", addr, level, err);

}

So, I got in the log
'Security is failed: 5A:B2:93:34:7A:61 (random) level 1 err 9.'

But sometimes I didn't get that issue and pairing ends successfully.

ncs v2.1.2

RE: nRF52840, Pairing through passkey

valeriy_simakov — Tue, 10 Oct 2023 09:36:58 GMT

Hi,
Thanks, I will take a look

RE: nRF52840, Pairing through passkey

Amanda Hsieh — Mon, 09 Oct 2023 16:19:12 GMT

Hi,

You can take a look at this example Central UART and test with Peripheral UART.

-Amanda H.

RE: nRF52840, Pairing through passkey

valeriy_simakov — Mon, 09 Oct 2023 14:53:33 GMT

Hi,

But my case isn't about a static passkey. It's a dynamic passkey)
Actually, I did pairing.
I used bt_conn_auth_passkey_entry() to enter the passkey for the corresponding connection. But it would be better to see an example..

RE: nRF52840, Pairing through passkey

Amanda Hsieh — Mon, 09 Oct 2023 14:42:51 GMT

Hi,

My colleague Kenneth explains how you can enable static passkey pairing on the peripheral and central in this thread: Zephyr BLE static passkey between central and peripheral on two nrf52840s.

Regards,
Amanda H.