Set Advertiser Address to 1 in Extended Header Flags and define Advertiser Address

Question

Using NordicSDK 1.6.1 and the following in the bt_le_adv_param and relevant settings in prj.conf 
 
 BT_LE_ADV_OPT_EXT_ADV |
BT_LE_ADV_OPT_USE_IDENTITY |
BT_LE_ADV_OPT_CODED |
BT_LE_ADV_OPT_USE_NAME |
BT_LE_ADV_OPT_USE_TX_POWER


CONFIG_BT_EXT_ADV=y
CONFIG_BT_CTLR_PHY_CODED=y
CONFIG_BT_USER_PHY_UPDATE=y 
 
 The secondary advertising data packet contains the advertiser address but the primary advertising packet does not (Extended header flags= 0x18). I want to advertise the address in the primary packet (extended header flags = 0x19 and set the AdvAddress field). 
 
 Thanks

Mttrinh · Accepted Answer

Hi, 
 The Bluetooth specification defines where it is allowed to put the advertiser address. In most cases it is not allowed to put the advertiser address when the primary PHY is Coded. I would suggest taking a look at the tables in Core v5.3, Vol 6, Part B, Section 2.3.1.5 and 2.3.1.6. The SoftDevice Controller will put the address in the primary channel (ADV_EXT_IND) if it is allowed by spec.

Set Advertiser Address to 1 in Extended Header Flags and define Advertiser Address

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