Unconnectable directed advertising with scan request callback and high duty cycle

RE: Unconnectable directed advertising with scan request callback and high duty cycle

Hung Bui — Wed, 29 Dec 2021 15:54:50 GMT

Hi again,

BT_LE_ADV_OPT_DIR_MODE_LOW_DUTY is to be used in either:

- Normal directed advertising with low duty cycle (this is non-scannable)

- Extended advertising directed with low duty cycle (this can be configured as scannable directed)

RE: Unconnectable directed advertising with scan request callback and high duty cycle

Ignacio — Wed, 29 Dec 2021 14:16:38 GMT

What are the implications of enabling BT_LE_ADV_OPT_DIR_MODE_LOW_DUTY option?

Thanks

RE: Unconnectable directed advertising with scan request callback and high duty cycle

Hung Bui — Wed, 29 Dec 2021 14:07:29 GMT

Hi Armand,

I assume this case is the same case as case #281865 and you just want to make it as a public case.

Regarding your question, as you can find in the valid_adv_ext_param () code , directed advertising with high duty cycle (the default option) is not supported by extended advertising.

When you do scannable directed advertising, should be configured as extended advertising and low duty cycle.
You can consider removing BT_LE_ADV_OPT_EXT_ADV, but then it won't support scannable directed as I explained in the other case.