RE: AD flags needed in every advertising packet?

Garth@ESS — Wed, 12 Sep 2018 21:30:05 GMT

Actually, you can omit the AD flags if you don't need it to be connectable. The specification reads:

1.3 FLAGS

1.3.1 Description

The Flags data type shall be included when any of the Flag bits are non-zero and the advertising packet is connectable, otherwise the Flags data type may be omitted.

So MME can actually do what he hoped, i.e. get 3 extra bytes of payload, as long as the sending device is non-connectable. :)

RE: AD flags needed in every advertising packet?

Sigurd — Thu, 12 Jan 2017 12:57:37 GMT

Hi,

Yes, you need to have the AD Flags in every advertising packet.

In the Bluetooth Core Specification Supplement it is stated that: “The Flags data type shall be included when any of the Flag bits are non-zero”. Since the Softdevice only supports Bluetooth LE the "BR/EDR not supported"-bit must always be set and hence, the AD Flags must be included.