RE: MAC Address Read in BMD 300 nrf52 - DK

hmolesworth — Fri, 24 Jan 2020 00:06:21 GMT

The default BLE address is in the FICR, not UICR, There are two ways of reading this, direct or via the SD Device.

// MAC Address
// ===========
//
// Last 2 bits in 48-bit stream - top 2 bits in last byte of Device Address
// 00 Public
// 01 Random Static
// 10 Resolvable
// 11 Non-Resolvable
//
// Note that even though the address is "Random", it is invariant and never changes
// for a specific Nordic device as the NRF_FICR->DEVICEADDR registers are Read-Only
//
// formed from NRF_FICR->DEVICEADDR[1] and NRF_FICR->DEVICEADDR[0]
// eg: BLE 1:B6DB78952FCE (B0050E2F9578DBB6)

or from the SoftDevice:

    // Get actual BLE address in case it is different from hardware register BLE address
    ble_gap_addr_t device_addr;  /**< 48-bit address, LSB format. */
    sd_ble_gap_addr_get(&device_addr);

Here is an example:

   snprintf(IPacket, sizeof(IPacket), "Id %08X%08X, Peer %u, Type %u, Addr %02X:%02X:%02X:%02X:%02X:%02X\r\n",
            NRF_FICR->DEVICEADDR[1], NRF_FICR->DEVICEADDR[0],
            device_addr.addr_id_peer, device_addr.addr_type, device_addr.addr[0], device_addr.addr[1],
            device_addr.addr[2], device_addr.addr[3], device_addr.addr[4], device_addr.addr[5]);

Output:
Id 71959DCC72DCF09F, Peer 0, Type 1, Addr 9F:F0:DC:72:CC:DD

RE: MAC Address Read in BMD 300 nrf52 - DK

ranton — Thu, 23 Jan 2020 21:45:12 GMT

Anyone know where this document can be found today?

RE: MAC Address Read in BMD 300 nrf52 - DK

Mttrinh — Fri, 04 May 2018 13:30:42 GMT

Hi,

Have a look at the MAC address provisioning application note.