RE: Retrieve BLE MAC address in Zephyr environment

user7377 — Tue, 15 Jun 2021 07:40:17 GMT

Hi,

You can use bt_id_get() or bt_le_oob_get_local() as mentioned in the example code in Developing Bluetooth Applications or get it from FICR as allready suggested provided the default random static address is used.

RE: Retrieve BLE MAC address in Zephyr environment

user79780 — Mon, 14 Jun 2021 23:11:12 GMT

I was looking for this too. My solution was using the ficr.

static void get_mac_address(uint8_t mac_address[6]) {
	unsigned int device_addr_0 = NRF_FICR->DEVICEADDR[0];
	unsigned int device_addr_1 = NRF_FICR->DEVICEADDR[1];
	const uint8_t* part_0 = reinterpret_cast<const uint8_t*>(&device_addr_0);
	const uint8_t* part_1 = reinterpret_cast<const uint8_t*>(&device_addr_1);
	mac_address[0] = part_1[1];
	mac_address[1] = part_1[0];
	mac_address[2] = part_0[3];
	mac_address[3] = part_0[2];
	mac_address[4] = part_0[1];
	mac_address[5] = part_0[0];
}