How to get the MAC address of a node which is about to be provisioned?

RE: How to get the MAC address of a node which is about to be provisioned?

MarcK — Wed, 19 May 2021 09:35:54 GMT

Ok thanks so much!

RE: How to get the MAC address of a node which is about to be provisioned?

Hung Bui — Wed, 19 May 2021 09:34:12 GMT

Hi Marc,

In our implementation the static address is used when advertising unprovisioned beacon. The provisioner report the MAC address of the unprovisioned beacon in beacon_packet_in() p_packet_meta->scanner.adv_addr.

Due to privacy reason it's not preferred to use static MAC address but resolvable random address when communicate with ADV bearer.

RE: How to get the MAC address of a node which is about to be provisioned?

MarcK — Wed, 19 May 2021 08:47:28 GMT

Sorry for the late reply! Too bad for me as the problem is still opened on my side.

I would like to retrieve the MAC Address (instead of unicast address) of the provisionee and then create a subscription group based on the last 2 bytes of the MAC address. In a mesh network composed of several tags, this will permit to address generic on off message to the wanted tag thanks to an application on a smartphone displaying a list of tags.

For information I am using PB-ADV for provisioning. The provisioner is a development kit NRF52832.

The only way I see to get MAC address is by using sd_ble_gap_addr_get(&ble_addr) but this is only for the MAC address on the device where the firmware is running.

Maybe the MAC address is included within a frame when communicating the provisioner?

Thanks.

RE: How to get the MAC address of a node which is about to be provisioned?

Hung Bui — Wed, 28 Apr 2021 13:12:05 GMT

Hi Marc,

Could you give more information about what you plan to do with the MAC address of the device ?

Which provisioning method are you using ? (PB-ADV or PB-GATT). Which device you used as the provisioner ?

After the device get provisioned the MAC address is not very important as the device operate with the unicast address instead.

When scanning for the PB-ADV or PB-GATT provisionee beacon the provisioner/scanner should be able to get the BLE MAC address of the node.