ricaun/ArduinoUniqueID

Writable Unique ID

TinManAkshay opened this issue · 3 comments

TinManAkshay commented

Hi all,

I understand that this library is helping to read the unique ID of the MCU but I wanted to ask theoretically that we can write to the unique ID as well like to change it? Is it possible?

Please let me know.

Thanks,
AKshay

ricaun commented

Hello @TinManAkshay

I believe is not possible to change the id of the MCU, the value is set on the manufacture of the chip and is a serial number.

If you need to create your own serial number the easiest way is use the EEPROM of the chip and set some values like a serial number.

See yaa!

TinManAkshay commented

Hi @ricaun ,

Thanks for the response. Are you familiar with writing anything to emulated EEPROM area of SAMD MCUs?

Thanks,
Akshay

ricaun commented

Never try EEPROM with SAMD MCUs.

I know have some librarys for this cases.

arduino/ArduinoCore-samd#145

See yaa