TEsting the periodic advertising example with nrf52840 dongle sniffer

RE: TEsting the periodic advertising example with nrf52840 dongle sniffer

NCKGTW — Wed, 27 Aug 2025 10:01:04 GMT

thanks a lot, is working now.

RE: TEsting the periodic advertising example with nrf52840 dongle sniffer

Amanda Hsieh — Tue, 26 Aug 2025 18:35:59 GMT

Please enable the Interface Toolbar for nRF Sniffer via View -> Interface Toolbar -> nRF Sniffer for Bluetooth LE

Follow up on your device from the Interface Toolbar.

RE: TEsting the periodic advertising example with nrf52840 dongle sniffer

NCKGTW — Tue, 26 Aug 2025 08:15:17 GMT

Hi Amanda ,

I already changed the line

err = bt_le_ext_adv_create(BT_LE_EXT_ADV_NCONN, NULL, &adv);

err = bt_le_ext_adv_create(BT_LE_EXT_ADV_NCONN_IDENTITY, NULL, &adv);

but I cant see any periodic_av train (AUX_SYNC_IND packet).

How can the dongle subscribe for this events ?

You say : "When you select a device in Wireshark, you're essentially synchronizing with its periodic advertising train. The sniffer follows the periodic advertising and subscribes to the subevent, which is why you're seeing the AUX_SYNC_IND"

How can I seect the device in wireshark so that it subscribe to the periodic events?

What I can see are just 3 packet related to the device but not seems to be the peridoic data!

Thanks

RE: TEsting the periodic advertising example with nrf52840 dongle sniffer

Amanda Hsieh — Mon, 25 Aug 2025 19:46:27 GMT

Check this post.

RE: TEsting the periodic advertising example with nrf52840 dongle sniffer

NCKGTW — Fri, 22 Aug 2025 20:02:04 GMT

Hi Amanda,

thanks fro replying me.

What I cant see in the sniffer are the "peridic advertising data" ; I mean reading the example code in the while (true) there is the following call:

err = bt_le_per_adv_set_data(adv, per_adv_ad, ARRAY_SIZE(per_adv_ad));

so I expected to find also the data inside the :

"per_adv_ad" payload and in particular the "mfg_data[]" buffer content:

static const struct bt_data per_adv_ad[] = {
BT_DATA(BT_DATA_MANUFACTURER_DATA, mfg_data, 3),
};

How can also read the periodic advertising data ?

is the nrf52840 dongle able to read it?

Thanks again.

Nicola

RE: TEsting the periodic advertising example with nrf52840 dongle sniffer

Amanda Hsieh — Fri, 22 Aug 2025 19:48:42 GMT

Hi,

The advertising data is as you see in the sniffer log.

https://github.com/nrfconnect/sdk-zephyr/blob/v4.0.99-ncs1/samples/bluetooth/periodic_adv/src/main.c#L15-L17

https://github.com/nrfconnect/sdk-zephyr/blob/v4.0.99-ncs1/samples/bluetooth/periodic_adv/prj.conf#L5

Regards,
Amanda H.