How to test the lockstep function based on s32k358

[BillWen]

Hi :

Currently, I try to implement lockstep function, and according to the following question on NXP community, I also get the same value.
https://community.nxp.com/t5/S32K/Detecting-S32K358-Lockstep-Pairs/m-p/2045711?utm_source=chatgpt.co...

My question is that how to test and check the lockstep status when system trigger core0 and core1 have something fault?

Thanks

BR, BillWen

[BillWen]

Hi Peter:
Thanks for your reply.
Last question, how about SPD for testing BIST or eMCEM? According to the following picture, both SAF and SPD provide Bist and eMcem function, is there any different between SAF and SPD of BIST and eMcem? Our company need to consider about these solution for ISO26262 or others in the future. Do you have any suggestion? Thanks.

BillWen_0-1747031899786.png

Thanks
BR, BillWen

[petervlna · Accepted solution]

Hello,

petervlna_0-1747115566208.png

According to the following picture, both SAF and SPD provide Bist and eMcem function, is there any different between SAF and SPD of BIST and eMcem?

SAF is extension of SPD. There is no difference in MIST and eMcem between them from SW point of view as far as I know.

Best regards,

Peter

[BillWen]

Hi Peter:

Thanks a lot for your help.

Thanks
BR, BillWen

[petervlna]

Hello,

Not sure if I understand your English correctly.

how to test and check the lockstep status when system trigger core0 and core1 have something fault?

Lock step status is reflected in DCM_GPR.DCMROF19.

If there is fault in system, it will logged in FCCU module NCF_S register.

Best regards,

Peter

[BillWen]

Hi Peter:
Thanks for your reply.
I know the DCM_GPR.DCMROF19 value is about lockstep enable or disable.
I means how to test lockstep function besides SAF tool from NXP? For example, can I add some code to test lockstep? If it possible, then I just need to get NCF_S register value?

Thanks
BR, BillWen

[petervlna]

Hello,

I do not know about any method to test the lockstep functionality by invoking and error.
Let me ask internally if such is possible.

I will feedback you ASAP.

Best regards,

Peter

[BillWen]

Hi Peter:
Thanks for your reply.
As I know, there are two way to test lockstep including SAF and SPD. I can try SPD in the first, do you have any experience about this drivers?

Thanks
BR, BillWen

[petervlna]

Hello,

To test the lockstep functionality of K3 series, SAF software package sCheck for RCCU could be referred. RCCU is a hardware module for lockstep check while sCheck could inject error to RCCU using EIM.

Best regards,

Peter