Is there a way to update the mac address after enabling Bluetooth?

[Palmer Huang]

Hello,

I know that the bt_ctlr_set_public_addr() interface needs to be called before enabling Bluetooth, and this bt_id_create() .

But I read the description of bt_id_create()  and it seems that it can be called after Bluetooth is enabled? If this can be achieved, what exactly should I do?

Regards, 

Gray.

[Sigurd]

Hi,

Just call bt_id_create(NULL, NULL);

You can see how its used e.g. here: https://github.com/nrfconnect/sdk-zephyr/blob/v2.6.99-ncs1-snapshot1/samples/bluetooth/peripheral_identity/src/peripheral_identity.c#L44

[Palmer Huang]

Hi, Sigurd

This seems to be generating a completely random mac address. Can I generate a mac address defined by myself?

[Sigurd]

Palmer Huang said:

Can I generate a mac address defined by myself?

 Yes. Snippet:

static bt_addr_le_t addr = {
	.type = BT_ADDR_LE_RANDOM,
	/* fixed MAC addres */
	.a = {
		.val = {0x01,0x02,0x03,0x04,0x05,0xc6},
	},
};

...
...

int err;
err =  bt_id_create(&addr,NULL);