Kinetis Microcontrollers中的主题 Re: Why would an IRQ_Handler nor be called

Why would an IRQ_Handler nor be called

archiebarter — Tue, 21 Aug 2018 00:11:48 GMT

several interrupts for FTM0 are initialized.

The flag and enable bits int the FTM->CxSC registers are set.

But FTM)_IRQHandler() does not stop and a break at the head of the handler.

Re: Why would an IRQ_Handler nor be called

kerryzhou — Tue, 21 Aug 2018 08:05:41 GMT

Hi Archie Barter,

If the IRQ handler can't be entered, it means your code still have problems.

I don't know what the kinetis chip you are using?

Next time, please tell us the chip part number.

After you enable the module interrupt in the register, please also check the CHF, does this channel Flag also set?

Please note, you also need to enable the IRQ with:

EnableIRQ(FTM0_IRQn);

Please try again

If you still have problem, please tell me your chip part number.

Have a great day,
Kerry

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Re: Why would an IRQ_Handler nor be called

archiebarter — Wed, 22 Aug 2018 16:32:46 GMT

That was dumb on my part.

I had forgotten the EnableIRQ()

Thanks, archieb

Re: Why would an IRQ_Handler nor be called

kerryzhou — Thu, 23 Aug 2018 03:31:48 GMT

Hi Archie,

Thanks for your updated information.

If you still have problem about it, please kindly let me know.

But if your question is solved, please help me to mark the correct answer, just to close this case, thank you!

Have a great day,
Kerry

Re: Why would an IRQ_Handler nor be called

archiebarter — Thu, 23 Aug 2018 17:00:26 GMT

I had left the EnableIRQ(FTM0_IRQn); function out.

You may close the case.

Thanks, archieb

Re: Why would an IRQ_Handler nor be called

kerryzhou — Mon, 27 Aug 2018 02:08:13 GMT

Thanks for your feedback.

You can mark the correct answer button to close it, this function only for the post author.

Have a great day,
Kerry