How to get REAL MAC ADDRESS of a device

Hi HarishKumar,

Let me ask in order to check if I understood what you are trying to accomplish:

Do you mean the BLE BD address that the devices are advertising?

>>> How to get the own MAC address of each device that?

Do you mean how to get the BD address in the application code?

If you could provide some extra information on your requirement, it would be very helpful.

Thanks, PM_Dialog

Hi Harish ,

The BD address is stored in the cmd->op.addr.addr - please check the cmd in the user_app_advertise() function.

gapm_air_operation sctructure includes the struct bd_addr addr sctructure which provideds own static private random address .

Thanks, PM_Dialog

Hi Harish,

What kind of BD address are you using in your code?

Thanks, PM_Dialog

Hi Harish,

So, if I understood correctly, the device starts advertising with the BB that is set in CFG_NVDS_TAG_BD_ADDRESS macro. Is that correct? And you would like to print that macro?

Thanks, PM_Dialog

Dear PM_Dialog,

> gapm_air_operation sctructure includes the struct bd_addr addr sctructure which provideds own static private random address .

this structure only contains address type, not the address:

/// Air operation default parameters struct gapm_air_operation { /// Operation code. uint8_t code; /** * Own BD address source of the device: * - GAPM_STATIC_ADDR: Public or Random Static Address according to device address configuration * - GAPM_GEN_RSLV_ADDR: Generated Random Resolvable Private Address * - GAPM_GEN_NON_RSLV_ADDR: Generated Random non-Resolvable Private Address */ uint8_t addr_src; /// Dummy data use to retrieve internal operation state (should be set to 0). uint16_t state; };

HarishKumar, if in app_on_init(), use

void user_app_init(void) { extern struct bd_addr dev_bdaddr; /*< arch_system.c */ /* Note that MAC address is stored in big-endian, but we usually write/use in in little-endian */ arch_printf("%02x:%02x:%02x:%02x:%02x:%02x\n", dev_bdaddr.addr[5], dev_bdaddr.addr[4], dev_bdaddr.addr[3], dev_bdaddr.addr[2], dev_bdaddr.addr[1], dev_bdaddr.addr[0]); }

or anytime later

struct bd_addr addr; lld_util_get_bd_address(&addr); /* Note that MAC address is stored in big-endian, but we usually write/use in in little-endian */ arch_printf("%02x:%02x:%02x:%02x:%02x:%02x\n", addr.addr[5], addr.addr[4], addr.addr[3], addr.addr[2], addr.addr[1], addr.addr[0]);

Hi bojanpotocnik,

Thanks for your inputs and for your indication.

Thanks, PM_Dialog