Using FICR device address with hci_uart example from NCS on nRF52x

Question

Hi, 
 is it possible to configure the hci_uart example from NCS in a way that the FICR device address of a nRF52840 is used as public device address? I cloned and compiled the project without any changes and would like the controller to use the hardware device address without providing a static random address from the host. 
 Regards, Oliver

OliverB · Accepted Answer

Found a solution in the meantime: 
 Using bt_ctlr_set_public_addr from bluetooth/controller.h I can set the public address: 
 static void get_device_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 = (const uint8_t *)(&device_addr_0);
 const uint8_t *part_1 = (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];

LOG_HEXDUMP_DBG(mac_address, 6, "Address");
}

void main(void) {
 ...

uint8_t address[6];
 get_mac_address(address);
 bt_ctlr_set_public_addr(address);

/* Enable the raw interface, this will in turn open the HCI driver */
 bt_enable_raw(&rx_queue);
 
 ...
} 
 Thanks to Retrieve BLE MAC address in Zephyr environment for implementation of get_device_address().

Using FICR device address with hci_uart example from NCS on nRF52x

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