Increase Max Extended Advertising Length

RE: Increase Max Extended Advertising Length

Michael Zeng — Wed, 23 Aug 2023 07:38:08 GMT

I see, thank you so much!

RE: Increase Max Extended Advertising Length

Vidar Berg — Wed, 23 Aug 2023 07:12:14 GMT

No problem! Did you place the 'child_image' folder in your project source directory as I suggested in your other ticket ( Identical code to Peripheral HR Coded sample not working in my own project )? The hci_rpmsg overlay file is located in this folder.

RE: Increase Max Extended Advertising Length

Michael Zeng — Wed, 23 Aug 2023 07:09:33 GMT

Thank you for the fast response! I tried this and it compiles, but with this warning:

"warning: BT_CTLR_ADV_DATA_LEN_MAX (defined at subsys/bluetooth\controller/Kconfig:586) was assigned
the value '128' but got the value ''. Check these unsatisfied dependencies: BT_CTLR_ADV_EXT (=n),
BT_CTLR (=n). See docs.zephyrproject.org/.../kconfig.html
and/or look up BT_CTLR_ADV_DATA_LEN_MAX in the menuconfig/guiconfig interface. The Application
Development Primer, Setting Configuration Values, and Kconfig - Tips and Best Practices sections of
the manual might be helpful too."

Could you clarify what you mean by "Note that this setting must be added to the hci_rpmsg overlay."?

RE: Increase Max Extended Advertising Length

Vidar Berg — Wed, 23 Aug 2023 07:03:16 GMT

Hi,

CONFIG_BT_CTLR_ADV_DATA_LEN_MAX must be set to a number between 31 to 1650: https://github.com/nrfconnect/sdk-zephyr/blob/2119df306f5c9104d479f96c4c8af00857094f83/subsys/bluetooth/controller/Kconfig#L604C32-L604C32. E.g. CONFIG_BT_CTLR_ADV_DATA_LEN_MAX=84

Note that this setting must be added to the hci_rpmsg overlay.