S32 Design StudioのトピックRe: Implement MPU by active or inactive Region Descriptor 1

Implement MPU by active or inactive Region Descriptor 1

hilverlee — Mon, 22 Aug 2022 10:02:48 GMT

For S32K118, does it have any side effect for implement MPU by active or inactive Region Descriptor 1 every 30 ms?

Re: Implement MPU by active or inactive Region Descriptor 1

lukaszadrapa — Tue, 23 Aug 2022 05:08:02 GMT

Hi,

there's no problem to dynamically change MPU descriptors, I can't see issues here.

Regards,

Lukas

Re: Implement MPU by active or inactive Region Descriptor 1

hilverlee — Tue, 23 Aug 2022 06:47:53 GMT

@lukaszadrapa

Thank you very much for your quick response.

But in order to double check, I highlight that our current software is not change the access permission by dynamic switching the MPU Region Descriptors (such is change Region Descriptor 0 to Region Descriptor 1), but change the valid or invalid attribute of Region Descriptor 1 by changing the corresponding region descriptor’s valid bit every 30 ms. Does it has any side effect?

Re: Implement MPU by active or inactive Region Descriptor 1

lukaszadrapa — Tue, 23 Aug 2022 11:08:20 GMT

Hi @hilverlee ,

this is not a problem, there are no side effects. You can enable/disable your descriptors as needed.

Regards,

Lukas

Re: Implement MPU by active or inactive Region Descriptor 1

hilverlee — Tue, 06 Sep 2022 07:31:16 GMT

@lukaszadrapa Got it. Thank you very much!