do nrf51 and nrf52 series firmware and software can be protected from overriding, cloning, copying,erasing?

RE: do nrf51 and nrf52 series firmware and software can be protected from overriding, cloning, copying,erasing?

Vladimir — Mon, 07 Aug 2017 13:29:30 GMT

If you need only readback protection.

For nrf51: write in the NRF_UICR->RBPCONF register 0x00000000.

For nrf52: write 0xFFFFFF00 into NRF_UICR->APPROTECT register.

Only full chiperase will disable this protection (you can use nRFgo Studio to reset readback protection).

RE: do nrf51 and nrf52 series firmware and software can be protected from overriding, cloning, copying,erasing?

Shway Pyi Thar — Sun, 06 Aug 2017 13:10:24 GMT

Thanks Turbo J.

RE: do nrf51 and nrf52 series firmware and software can be protected from overriding, cloning, copying,erasing?

Turbo J — Sun, 06 Aug 2017 12:55:41 GMT

Note: A full erase via the SWD pins (and a debugger like the JLink) is always possible as long as the user can access the physical pins somehow. You also need to look at the bootloader in case you require one for OTA firmware upgrades.

RE: do nrf51 and nrf52 series firmware and software can be protected from overriding, cloning, copying,erasing?

Turbo J — Sun, 06 Aug 2017 12:50:45 GMT

Read Chapter 16 in the NRF52 manual, or chapter 9 in the NRF51 manual. The NRF51 and 52 have diffrent protection mechanisms that can be configured via UICR.