what does the advertising data mean?

[andy2003hunan]

hi, my nrf51822dk was downloaded s110 hrs demo,and it was advertising,i used a ble sniffer dongle to get the advertising data.the AdvData is "0B 09 4E 6F 72 64 69 63 5F 48 52 4D 03 19 41 03 02 01 06 07 03 0D 18 0F 18 0A 18" .i know the "09 4E 6F 72 64 69 63 5F 48 52 4D" is the complete local name; "02 01 06"and "07 03 0D 18 0F 18 0A 18" are the 16-bit service UUID; but i do not know what does"03 19 41 03 "mean? i studied for a long time,but no answer. tks!

[Colton Boyer]

It is also important to note that 02 01 06 isn't part of the UUID. "02" states 2 bytes are following it, "01" is the Flags data type, and "06" is the data for Flags. The Flags data type is unique in that it uses 1 bit Boolean flags. In this case, 0000110. "LE General Discoverable Mode, BR/EDR Not Supported".

For more information on the Flags data type, see section 1.3 of the Supplement to the Bluetooth Core Specification V4.