TMS320F28377S: Lost Interrupts

Dominik Lorenz

Hello all,

i have a question concerning the handling of multiple Interrupts:

How does the processor handles the case when more than one interrupt is triggered - without nesting?

im having multiple interrupts that are beeing triggered roughly at the same time. It doesn't really matter in which order that they are serviced, but it is important that all of them get executed.

When a interrupt is triggered, the others are beeing disabled. Does this mean that interrupts beeing triggered during another interrupt go unserviced, or do they just wait until the current routine is finished? Does it matter if they are in the same/different group?

Thanks a lot!

Dominik

over 8 years ago

0 Elizabeth Joy over 8 years ago

TI__Expert 5940 points

Hi Dominik,

The interrupts are serviced based on priority when there are multiple interrupts. PIEIER and IER registers have to be configured to enable interrupts. I’d recommend reading the System Control chapter’s Peripheral Interrupts section in the TRM to learn more.

Regards,
Elizabeth

0 Whitney Dewey over 8 years ago

TI__Guru 54415 points

Hi Dominik,

They will remain pending and execute after the current one finishes. If you have multiple pending, the group will determine the priority of which one gets to run next. They won't get dropped though.

Whitney

0 Dominik Lorenz over 8 years ago in reply to Whitney Dewey

Intellectual 255 points

Thank you a lot!

cheers,
Dominik

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TMS320F28377S: Lost Interrupts