Access the serial number on MCU

RE: Access the serial number on MCU

awneil — Thu, 03 Oct 2019 09:47:23 GMT

[quote userid="6462" url="~/f/nordic-q-a/52844/access-the-serial-number-on-mcu/213154"] any BLE scanning tool [/quote]

Well, iOS might obfuscate it...

😞

RE: Access the serial number on MCU

awneil — Thu, 03 Oct 2019 09:46:35 GMT

[quote userid="26071" url="~/f/nordic-q-a/52844/access-the-serial-number-on-mcu/213145"]it is probably easier to print a new sticker with the ID of the nRF[/quote]

I agree.

I always mark my development devices with the MAC address - as that will be reported by any BLE scanning tool without the need for any special software or custom utilities.

And it is available to the microcontroller firmware.

RE: Access the serial number on MCU

awneil — Thu, 03 Oct 2019 09:41:57 GMT

[quote userid="71457" url="~/f/nordic-q-a/52844/access-the-serial-number-on-mcu/213125"]I want to know about the serial number on large MCU[/quote]

The "large MCU" is the on-board J-Link.

So you can also access its serial number using the Segger tools.

In fact, if you have more than one J-Link (any kind of J-Link) connected, the Segger tools will pop up a window listing all the serial numbers, and asking you to choose one

See: https://forum.segger.com/index.php/Thread/6188-SOLVED-Give-friendly-names-to-JLinks

From their Wiki, it seems that the "Nickname" feature has now (from V6.49a) been implemented:

https://wiki.segger.com/J-Link:Nickname

But, as Edvin said, this is not accessible to the nRF device.

RE: Access the serial number on MCU

Edvin — Thu, 03 Oct 2019 09:17:45 GMT

You will not be able to access this number from the nRF Firmware. I am sorry. If you want to identify the different DKs, it is probably easier to print a new sticker with the ID of the nRF.

RE: Access the serial number on MCU

Gurusanthosh — Thu, 03 Oct 2019 09:08:32 GMT

I am planning to assign a small unique identifier to a group of nRF52840 boards. As the serial number on large MCU is easily identifiable, I thought of using this and assign an ID in the main program by maintaining a mapping between serial numbers on large MCU and the internally maintained unique identifiers.

RE: Access the serial number on MCU

Edvin — Thu, 03 Oct 2019 08:57:00 GMT

If you download Nordic Command Line Tools, you can use the command "nrfjprog --ids" and it will print the ID of all the connected segger programmers.

What do you need it for? If you use an IDE and you want to program the nRF, it will connect to the connected programmer (if it is connected).

RE: Access the serial number on MCU

Gurusanthosh — Thu, 03 Oct 2019 08:33:18 GMT

Hi Edvin, Thanks for the explanation about the device ID of nRF.

I want to know about the serial number on large MCU. Is there any way to get the serial number printed on MCU?

RE: Access the serial number on MCU

Edvin — Thu, 03 Oct 2019 08:26:42 GMT

Hello Santosh,

The serial number printed on the large MCU on the Development kit is not the serial number of the nRF, but the serial number of the debugger. The device ID is the unique number of the nRF. The nRF is the small chip on the bottom of the picture here.