How to implement 1650byte periodic advertise?

RE: How to implement 1650byte periodic advertise?

Ryo1673 — Thu, 25 Jan 2024 12:53:06 GMT

Hi.

Thank you for your answer.

I'm sorry, but I missed the zip file based on HR sample in the link you showed.
I found AUX_CHAIN_INT packets in the sample.

Additionaly, I found the chain advertises also in my sample based on "periodic_adv". However, some changes is needed.

1. prepare "ad[]" of 800bytes as shown in the link.
2. comment out all "bt_le_per_***" functions.
3. bt_le_ext_adv_start() is put before while loop(, that is maybe before bt_le_ext_adv_start() ).
4. add "CONFIG_BT_CTLR_ADV_DATA_LEN_MAX=1650" to prj.conf file.
5. add to "BT_LE_ADV_OPT_USE_IDENTITY" to the first parameter of "bt_le_ext_adv_create()".

Anyway, my issue is resolved.
I appreciate your help.

Thank you.

RE: How to implement 1650byte periodic advertise?

Amanda Hsieh — Wed, 24 Jan 2024 15:43:49 GMT

Hi,

Please make sure declare the bt_data ad the same way as this post. Most likely that's why you only see 1 byte , wrong parse/format.

1. My colleague also upload the sample for SDK v2.5.x.

2. nRF Sniffer can also sniff it.

RE: How to implement 1650byte periodic advertise?

Ryo1673 — Wed, 24 Jan 2024 06:11:30 GMT

Hi.

As I showed it in the first code block, I made "bt_data ad[]" of 800byte and used it as same as the link you showed.

The result is that AUX_SYNC_IND packet of 1byte is found. I've never found AUX_CHAIN_IND for now.

Then, I have two additional questions.

1. SDK have not been changed about chain advertising, right? In SDK 2.5.1, is the link you showed availabe?

2. In the link you showed, what is the receiver? Sniffer or any nordic devices? I used a protocol analyzer to monitor it.

Thank you.

RE: How to implement 1650byte periodic advertise?

Amanda Hsieh — Tue, 23 Jan 2024 16:44:57 GMT

Hi,

Could you run and test the example here: RE: Advertising 1650 bytes of Host advertising data in an Auxiliary segment using Advertising Extensions?

Do you get the same result?

Regards,
Amanda H.