Bluetooth BT_LE_ADV_OPT_EXT_ADV option use.

[2songh]

Is your feature request related to a problem? Please describe.
I wish use BT_LE_ADV_OPT_EXT_ADV option.

Environment
Board: nucleo_wb55rg
OS: Linux ubuntu 18.04
Versioin: Zephyr 2.4.0

Describe the solution you'd like.
I want advertise with extended advertising.

prj.conf

explanation

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bt_le_adv_start(param, ad, ARRAY_SIZE(ad), NULL, 0);

And I get error.
Advertising failed to start (err -22)

How can I solve this error?

[hermabe]

This is not a feature request, but a question. Moving to discussion.

(err -22) is -EINVAL, so the parameters you have given are somehow invalid. Is extended advertising supported and enabled in the controller you use?