Zephyr memory protection on nRF52840 mpu

[Aeneas]

Are the memory-mapped hardware addresses (e.g. 0x40000000 and following)

on the nRF52840 mpu  restricted from access by the Zephyr RTOS.

If so, can this be defeated ?

[Sigurd]

Hi,

on the nRF52840 mpu  restricted from access by the Zephyr RTOS.

No, that should not be the case.

[Aeneas]

Thanks for that.  I was spooked by some articles which I found on the Internet

from around 3-4 years back announcing the coming of MPU to the Zephyr RTOS.

If the firmware developer wants to implement any mpu protection,

it should be his Firmware choice.