RE: Process isolation on the nRF52

Carl — Tue, 01 Nov 2022 12:30:13 GMT

Thanks Kenneth.

RE: Process isolation on the nRF52

Kenneth — Tue, 01 Nov 2022 12:21:23 GMT

Hi,

Not sure if I have a good suggestion for you here. The MWU is used by the softdevice controller, so it's not possible for the application to control. The MPU is not used by the softdevice, and can thereby be used by the application in the way that Vidar mention in his reply you link to ("stack guard" using MPU).

If you want a really good solution you should consider using the nRF5340, for instance the ble stack is then running on it's own networe core, and the application run on the application core. In addition the zephyr RTOS do also provide security features:
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/security/security-overview.html

Best regards,
Kenneth