How to apply FIR / IIR Filter in GPIO_ISR Routine?

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How to apply FIR / IIR Filter in GPIO_ISR Routine?

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chennai2chn
Contributor I

GPIO Interrupt using for optocoupler in PORTE PIN2... This port don't have a digital filter in Hardware.... how  to apply software (FIR or IIR) filter...

Please Help me....

Advance Thanks

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1,406 次查看
Hui_Ma
NXP TechSupport
NXP TechSupport

Hi,

I would recommend to download MCUXpresso SDK software package.

The SDK software package includes CMSIS DSP library, which provides FIR example with below path:

..\SDK_2.5.0_FRDM-K66F\CMSIS\DSP_Lib\Examples\ARM

Wish it helps.


Have a great day,
Mike

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