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iBeacon scan response

Peter Borenstein
Mastermind 8695 points
Other Parts Discussed in Thread: CC2541, CC2540

I would like to configure my BLE devices as iBeacons and send additional data without connecting. Scan response seems like the correct way to do this, but including my custom scan response is causing the iOS iBeacon callback not to trigger within my iOS app

This post clearly outlines how to format the advertising packet:  http://e2e.ti.com/support/wireless_connectivity/f/538/p/293551/1023580.aspx#1023580

I know iBeacons made by Estimote do have scan responses, so it is possible, but I can't find any good documentation for iBeacons.

What are acceptable scan responses for iBeacons?

  • 0
    TI__Genius 17975 points

    The iBeacon specification requires a license from Apple, so you will need to contact them for details. What I can tell you is that iBeacons themselves don't use Scan Responses; however BT Core spec defines the format for scan responses to follow the same rules as the format for advertisements.

    You can find the details for this on pg 1735-1738 in  the BT 4.0 core spec.

  • 0 in reply to Willis1
    Mastermind 8695 points

    Hi Willis1,

    I wasn't aware that I need a license from Apple.

    I did figure out how to include a scan response. Not all advertising data types will work. I'm only including "name" and "service data" now

  • 0 in reply to Willis1
    Prodigy 60 points

    Hi, Dear Willis:

    As Apple mentioned earlier that the iBeacon can get the location tolerance in 30cm, is it true?

    We tested with the Keyfob demo device (CC2540 & CC2541) and got the RSSI value changed range is more than 5dBm even under stable test conditions, so the location tolerance is more than few meters.

    How can we get the stable RSSI ?

    Thanks,

    Yimin