Hi there,
We are using for BLE communication a nRF52832 chip with random static address configuration (shown in the UART). Can we be sure that the address of a chip will be always the same all accross the life of the product ? No way to change reflashing the chip, rebooting, erasing whole flash, locking the flash protection or any other possible action ?
We need this to be sure we can identify a device by his BLE MAC address (associated with its 8-byte device ID).
Nevertheless, we are away about uniqueness limitations of theses ID as explained :
- here about the MAC address Does nRF52840 on Thingy 91 has unique MAC-address?
- here about the hardware ID nRF5340 FICR ID uniqueness
Is theses ID are based from DEVICEID[0..1] from FICR https://docs.nordicsemi.com/bundle/ps_nrf52832/page/ficr.html#d917e1924 for the hardware ID and from DEVICEADDR[0..1] from FICR too https://docs.nordicsemi.com/bundle/ps_nrf52832/page/ficr.html#d917e6657 for the BLE address ?
Many thanks by advance.