An HET interrupt does not rise.

Jerome Beauvais

The interrupts are configured on IRQ with HCG:

The IRQ interrupt is enabled

The IRQ flag is ON in the ECMP instruction of NHET program:

We can see that the data field of ECNT instruction is higher than the data field of ECMP instruction. So an interrupt should be rise.

Here we can see that the Offst1 is correct, the interrupt is enabled and the interrupt flag indicates the interrupt occurs. But the vector interrupt is not fetched and the interrupt routine doesn’t start.

What is missing?

Thanks for your Help

Jerome

over 8 years ago

0 KARTHIKEYAN RAJAMANICKAM over 8 years ago

TI__Genius 11645 points

Jerome,

I see you have done most of the all the required items, also since its says pending at VIM I can see that HET sends the interrupt as well.

If you could share your code, I can have a quick look at it.

0 Jerome Beauvais over 8 years ago in reply to KARTHIKEYAN RAJAMANICKAM

Expert 1770 points

Hello,
Thanks for your fast reply.
The code of the application becomes to be large.
So I will reduce the code the most as possible then I’ll send it to you.
Kind regards
Jerome

0 Sunil Oak over 8 years ago in reply to Jerome Beauvais

TI__Mastermind 49120 points

Hi Jerome,
Can you set a breakpoint in the HET ISR and make sure that it is not getting hit? If the interrupt condition exists even after the interrupt is serviced, the interrupt request will be generated again the next time that the ECMP instruction is executed. In this case, it may appear as if the interrupt is not getting serviced.

Regards,
Sunil

0 Jerome Beauvais over 8 years ago in reply to Sunil Oak

Expert 1770 points

Hi Sunil,

I think you mean a breakpoint in HET Interrupt Service Routine.

I already did it but the program never stop to these breakpoints.

thanks for your help.

Jerome

0 Sunil Oak over 8 years ago in reply to Jerome Beauvais

TI__Mastermind 49120 points

Hi Jerome,

It would be good to get an example code project from you that shows the issue. Just to try one more thing, can you enable both IRQ and FIQ inside the CPU? Ideally this is not necessary as the N2HET is generating IRQ... just a thought.

Regards,
Sunil

0 Jerome Beauvais over 8 years ago in reply to Sunil Oak

Expert 1770 points

Hello,
I simplified the application code and the issue is still there.
I think that the interrupt never rise from HET. Sometime after a breakpoint we can see the interrupt flags set in HET registers but not always.
Thanks for your help
Jerome

4428.RM48L_SbS_Motor_Interrupts.zip

2045.Zumo_HET1_01.zip

0 Sunil Oak over 8 years ago in reply to Jerome Beauvais

TI__Mastermind 49120 points

Hi Jerome,

Can you add a call to the function _enable_interrupt_() in your "main"? You can add this call before the call to gioInit().

0 Jerome Beauvais over 8 years ago in reply to Sunil Oak

Expert 1770 points

Hi Sunil,
I did it but the issue is still there.
Thanks
Jerome

0 KARTHIKEYAN RAJAMANICKAM over 8 years ago in reply to Jerome Beauvais

TI__Genius 11645 points

Hi Jerome,

Finally I managed to get your code running , assuming there are no external stimuli required for it to run.

a. I was able to get an RTICompare event (which made sure all the system is set-up proper w.r.t interrupts)

b. I was able to see the HET interrupt event as well, so I'm not sure about the issue.

If you are missing some interrupts(and some gets serviced properly) then its a NHET level problem to deal with, so pls comment.

0 Jerome Beauvais over 8 years ago in reply to KARTHIKEYAN RAJAMANICKAM

Expert 1770 points

Hi Karthikeyan,
You are right, it’s a NHET level problem.

The first ECMP instruction generates an interrupt (when irq=ON) without the parameter request=GENREQ.
The second ECMP instruction contains the parameter “en_pin_actionOFF” and to generate an interrupt we must add the parameter request=GENREQ.
So now all is OK and I could debug the HET ISR.
Thanks for your help
Kind Regards
Jerome

0 KARTHIKEYAN RAJAMANICKAM over 8 years ago in reply to Jerome Beauvais

TI__Genius 11645 points

No problems. Thanks for confirming that it works now.

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An HET interrupt does not rise.