My aim is to acquire a unique serial number for my design and reuse it as an ID in different places for my Radio communication. I have used an Atmel SAM D21 series microcontroller on my design which on the 1st sight seemed to have a serial number when I followed the following path in Atmel Studio.
Menu > Tools > Device Programming > Device Information
But no traces of any serial numbers of any sort. Just a Device Signature which repeats on all the MCUs.
I am aware that we could use a Dallas One Wire Serial chip for this purpose and apparently some AVR series have an accessible serial number in them, but in the favor of reducing the BOM and the choice of MCU I am trying not to go that way.
In the meanwhile, even though that I haven't used the feature myself, I know that SAM D series have an integrated USB module in them. Considering that every USB module should have a unique serial number (unless I am wrong), is there a method to extract that SN?
Please let me know if there are any solutions you have in mind for this purpose.