RE: Working with the nRF52 Series' improved APPROTECT

user115505 — Thu, 05 May 2022 15:07:30 GMT

I have been using NRF52832 Rev 2 and I'm trying to move to Rev 3.

I'm using SEGGER Embedded Studio on a MAC. I'm using NRF5 SDK version nRF5_SDK_17.1.0. I downloaded nrf_mdk_8_46_0_gcc_nordiclicense and copied all of those files into the nRF5_SDK_17.1.0_ddde560\modules\nrfx\mdk directory, overwriting what was there.

I have 2 projects: an application and dfu/secure_booloader and I have added ENABLE_APPROTECT to the preprocessor definitions.

When I use nrfjprog, I get 0xFFFFFFFF

1) nrfjprog --recover

2) nrfjprog --memrd 0x10001208

RESULT: 0xFFFFFFFF

I am doing this on a Rev 2 while waiting for my Rev 3's. Is this expected and will the behavior be different if I do the same thing on a rev 3?

RE: Working with the nRF52 Series' improved APPROTECT

user2133 — Tue, 15 Mar 2022 21:22:24 GMT

Excellent read. Thanks Daniel!!