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Getting RSSI value from another ibeacon

Karina Karapetyan
Prodigy 20 points
Other Parts Discussed in Thread: CC2541

Hello!


In my project I have to get on one of my ibeacons (CC2541) the RSSI value of another ibeacon in addition to its own value of RSSI. Is it possible?

Looking forward to hearing from you!

Best Regards,

Karina

  • 0
    TI__Expert 4565 points

    Hey Karina,

    iBeacons by design are TX/advertise only. If your devices only operate in iBeacon mode only then this won't be possible for you to send data back to either one. You will have to switch out of iBeacon or broadcast mode in order to get this to work.

    Can you add some more clarity about your system? Do you have a central device that is scanning for both iBeacon packets and you want to send the central device's RSSI values for these packets to one of your iBeacons? Or do you strictly have just two iBeacons?

    -Matt

     

  • 0 in reply to _mk
    Prodigy 20 points

    Hello Matt,

    I have attached the scheme of my project.

    I have to verify RSSI 2 value on iBeacon 1 and send the sum of RSSI 1 and RSSI 2 to computer.

    Could you tell me how I can verify RSSI 2 value on iBeacon 1?

     

    Best Regards,

    Karina

  • 0 in reply to Karina Karapetyan
    TI__Expert 4565 points

    Hey Karina,

    iBeacon 1 will only have knowledge of the RSSI, RSSI 2 in your diagram, of the message it receives from iBeacon 2, since that is the only link over which it is receiving a message.

    Your computer will have knowledge of RSSI 1 since it is receiving messages over that specific link. This means you will only be able to send RSSI 2 from iBeacon 1 to computer. The computer will have to do the summation of the this RSSI 2 value in the packet and the RSSI of the actual packet it receives (which is RSSI 1 in your diagram).

    In this scheme, iBeacon 1 will have to switch into either an oberserver or central role in order to receive packets from iBeacon 2. If you are only operating as iBeacons then the devices will only transmit and iBeacon 1 will never receive anything from iBeacon 2.

    -Matt

    I'm making an assumption that the RSSI values you are speaking of are the RSSI values of the links you have drawn in purple arrows. Let me know if that is not the case.