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!

[Petter Myhre]

Please see this question for how to decode the advertising data.

03 19 41 03 decodes to:

03 - length of 0x03 bytes

19 - type of 0x19, appearance (see this)

41 03 - 0x0341 -> 833 -> BLE_APPEARANCE_HEART_RATE_SENSOR_HEART_RATE_BELT (see this)