for BD address

[roger.k]

Hi. I'm using nRF51822AC, SDK12.2.0, S130 v2.0.1 as central.

As I've tested by using err_code = sd_ble_gap_address_get(p_addr); APP_ERROR_CHECK(err_code);

App returns : 80 d0 79 b3 7d e0 Boot returns: 81 d0 79 b3 7d e0

Why are they different? Is there any rule between App's BD address and Bootloader's BD address? I need your help.

[endnode]

Hi Roger,

As you can see they differ in the least significant bit (little endian architecture = the first byte) and that's how Nordic implements their Boot Loader example in the SDK. You should be able to find it in the source code and change if you want.

Cheers Jan

[roger.k]

Thank you for your help. If app address = ff 10 22 33 44 55, boot address will be 00 10 22 33 44 55? or 00 11 22 33 44 55?

I hope your reply.

[endnode]

Hi Roger. Sorry to be vague, here is detailed explanation by Nordic how and why they change Adv. address in bootloader example.

[endnode]

If I read it correctly then yes, last byte value is incremented by 1 so if it is 0xFF it will overflow to 0x00.

[roger.k]

Thank you very much. It's very helpful.