changing the advertisement packet of ibeacon to include scanned uuid/mac address and rssi value

[adrian_ng]

Hi ,

I have 2 nrf51 dongle compiled with a code which can scan and advertise ibeacon constantly. Whenever receive advertisement packet from each other , they are able to print out the uuid,major,minor and rssi value of the received packets.

My next task is to advertise out the scanned Rssi and the mac address/uuid of that scanned device. Example, dongle A receive advertisement packet from dongle B , dongleA will then advertise out an advertisement packet that consist of information of the dongleB's Mac address/uuid and the measured Rssi value. Any way i can change the advertisement packet in (mbed coding) to achieve this or any other advice?

Below is my code, can you guys help on this ? Thank you.

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[Einar Thorsrud]

According to the iBeacon specification the only application specific data is the Major and Minor numbers, each 2 bytes. You cannot put your application specific data in any other part of the advertisement packet. That means that you can only fit in total 4 bytes, so you are not able to fit the full 6 byte MAC address plus the RSSI. You could part of the MAC address however, which may be significantly "unique" for your use case.