CCS: About TMS570LS0914 Interrupt

tsukiko

Other Parts Discussed in Thread: TMS570LS0914

Tool/software: Code Composer Studio

I have a problem, when I use interrupts, write an operation in the interrupt, when this operation is not finished, the next interrupt comes, what should I do to prevent the interrupt delivery error?

Thanks to every engineer who saw my post. Thank you!

over 5 years ago

0 JohnS over 5 years ago

TI__Guru**** 159715 points

Can you let me know what device you are using? Also are you using TI-RTOS?

Regards,
John

0 tsukiko over 5 years ago in reply to JohnS

Prodigy 180 points

The chip I'm using is TMS570ls0914

0 Tomasz Kocon over 5 years ago in reply to tsukiko

Guru 26200 points

What about the second question?

0 tsukiko over 5 years ago in reply to JohnS

Prodigy 180 points

Thank you for your reply！In my simple self-exercise, I suddenly thought of this problem mentioned above, and did not use ti-rtos. Thanks!

0 Miro over 5 years ago in reply to tsukiko

TI__Mastermind 21425 points

Hello,
TMS570LS0914 does not support interrupt nesting in hardware. TMS570LS0914 supports FIQs (fast interrupt request)and IRQs. FIQs are higher priority than IRQs. FIQs may interrupt IRQ but IRQs can't interrupt FIQs.
VIM (Vectored Interrupt Manager) module is the one which prioritize IRQs and FIQs. Each FIQ/IRQ could be enabled or disabled.
TMS570LS0914 supports 128 channels. Interrupts could be mapped to one ore more channels which makes possible priority to be changed dinamically on software.
More on VIM module you can find in TRM, Section 15: www.ti.com/.../spnu607a.pdf
A way to implement nested interrupts you can find here: www.ti.com/.../spna219.pdf

Best regards,
Miro

0 tsukiko over 5 years ago in reply to Miro

Prodigy 180 points

Thank you for your reply！But what I want to ask is how to keep the data intact if the interruption is too short.

0 Miro over 5 years ago in reply to tsukiko

TI__Mastermind 21425 points

Hello,
Are you using some RTOS (may not be TI-RTOS)?

Best regards,
Miro

0 Miro over 5 years ago in reply to Miro

TI__Mastermind 21425 points

Hello,
If you have any feedback, please write bellow or open a new thread.

Best regards,
Miro

0 tsukiko over 5 years ago in reply to Miro

Prodigy 180 points

I just put forward this idea and looked for ways to solve my problem, so I haven't thought about RTOS yet

0 Miro over 5 years ago in reply to tsukiko

TI__Mastermind 21425 points

Hi,
Here you can find more information about how interrupts are handled in Hercules MCUs: www.ti.com/.../spna218.pdf

Hope this helps!

Best regards,
MIro

0 tsukiko over 5 years ago in reply to Miro

Prodigy 180 points

OK！
wish you good health！

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CCS: About TMS570LS0914 Interrupt