RE: MAC address randomly set to 00:00:00:00:00:00

apuret — Mon, 16 Jan 2017 09:52:48 GMT

Hi Petter,

A sleep of 20 ms after ble_stack_init() seems to do the job (no problem after 100 tests). With a sleep of 2 ms, I saw the wrong MAC address one time or two.

I am still interested with a real correction! I let you close the topic at your will.

Thanks for your help.

RE: MAC address randomly set to 00:00:00:00:00:00

Petter Myhre — Fri, 13 Jan 2017 14:06:32 GMT

Your code is correct, I just tested it here, and I get the same behavior.

It should not be 0, and is a bug. I will update this answer when it is fixed.

With the non-resolvable address type the address will change every number of seconds you set private_addr_cycle_s to, so this is expected.

And after the first private_addr_cycle_s seconds a proper random non-resolvable address is used, instead of 0. Then iOS should be able to connect.

Now you are setting private_addr_cycle_s to 15 * 60 s = 15 min. If 15 min is too much, the workaround is to decrease it.

The device address is not used while you are in a connection, so you don't have to worry about it changing then.

Edit: It seems like a reset will also remove the issue.

Edit2: Or put a delay after ble_stack_init(), like nrf_delay_ms(2).