【Chained Advertisement/Nordic 52832 or 52840】How to generate the chained advertisement with the nRF Connect SDK

[xiaolongba]

Hi Nordic experts,

Recently, I tested and found that I failed to start the advertisement with NCS 1.7.0  if the length of advertising data is greater than 251 Bytes, for instance, 500bytes, or 300 bytes.

the log system showed me the too big advertising data error information, I tried to debug and found that the root is caused by BT_HCI_LE_EXT_ADV_FRAG_MAX_LEN. However, I searched the answer here and it showed me that the NCS 1.7.0 (How to scan multiple tags that are sent periodic advertising in ncs v1.6.0? - Nordic Q&A - Nordic DevZone - Nordic DevZone (nordicsemi.com)) can support up to 1650bytes. so my question is :

1. How to generate the chained advertisement when the length of advertising data is greater than 251Bytes. is it possible at this moment?

[Simonr]

Hi

I'm sorry, but chained advertising of more than 255 bytes did not make it into NCS v1.7.0. As of now the only way to transmit more than 255 bytes at a time is by segmenting the payload like Hung explains in the ticket you linked to. However, the higher chained advertising sizes will find its way into the master branch soon (I don't have an exact date I'm afraid), so keep your eyes peeled!

Best regards,

Simon

[xiaolongba]

Hi Simonr Bro,

many thanks for your clarifications. the master branch you mentioned above is Zephyr repository or nRF Connect SDK?

Also, I checked the latest information from the zephyr repository, it seems that this feature has been implemented from 2.61 version.