Is PIT trigger of wakeup of WKPU?

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Is PIT trigger of wakeup of WKPU?

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Contributor IV

Hi,

In VF5xx/wakeup sources of WKPU_WISR thread, I got the following answer.

 ・One of them, WKPU_M4IF (source - PIT), appears to be incorrect (to be removed in the next Reference Manual revision).

When I stop PIT, I do not LPSTOP3 cancellation. And, when PIT moves, I do LPSTOP3 cancellation.

From the above, I doubt that I do wakeup from LPSTOP3 in PIT.

I confirmed that I removed  LPSTOP3 in wakeup trigger of PIT.Then it contradicts this answer.

WKPU register is abnormal, too.The WKPU register after the LPSTOP3 cancellation is follows.

  WKPU_WISR = 0x00400000

  WKPU_IRER = 0x00013006

  WKPU_WRER = 0x00013006

  WKPU_NCR  = 0x00000000

  WKPU_NSR  = 0x00000000

Wakeup becomes the factor of WKPU_WISR = 0x00400000, but is a bit not to exist.


Q1)

Is PIT wakeup trigger of WKUP?

Q2)

What WAKEUP source does WKPU_WISR = 0x00400000 mean?


Q3)

Please tell me the method to mask PIT wakeup trigger.

Best Regards,

soichi

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Senior Contributor V

Dear Soichi,

Let me rephrase your question: are you questioning the statement from the earlier thread that WKPU_M4IF (source - PIT) does not exist, please?

If so, may you describe all your actions leading to this assumption literally step-by-step, please?

Sincerely, Naoum Gitnik.

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Contributor IV

Dear Naoum,

Thank you for reply.

Sorry.

> If so, may you describe all your actions leading to this assumption literally step-by-step, please?

That's right!

Please give me a little time because I will confirm that.

I have one  question .

Q)

Please comment on WKPU_WISR = 0x00400000.

I cannot understand me.

Best Regards,

soichi

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Senior Contributor V

Dear Soichi,

Regarding WKPU_WISR and its 0x00400000 value: based on the Reference Manual, fields 0 to 23 are reserved, meaning not used by the Vybrid design (you know, it often happens when the same block is used for various ICs...). Unless there is a real problem requiring deep IC behavior analysis, they are ignored.

Regards, Naoum Gitnik.