Interrupt polling using External pin on imx8m Mini eval kit

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Interrupt polling using External pin on imx8m Mini eval kit

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hsiddiquee
Contributor II

Hello,

 

I'm trying to poll an external interrupt (event handler) through imx8mm eval kit. I tried gpiochip5 line 0 for external pin number 31. It is giving me an error. I think becuase it is not an interrupt pin. Is there any pin that can be use for this purpose without going through PCA*** IC. If not, can you guys help me how can I make my polling pin.

 

Thank you

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1 Reply

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi hsiddiquee

 

in general any gpio pin can be used for that, for example one can look at answer on

https://community.nxp.com/t5/i-MX-Processors/GPIO-interrupt-on-i-MX6/m-p/364279

 

Best regards
igor

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