Level triggering not working on LPC 804 board

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Level triggering not working on LPC 804 board

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Balaji_KG
Contributor II

Hi,

       Currently I am working on LPC804 controller. In that pin interrupt method only working in EDGE triggering. Level triggering method isn't working. I tried the LPCOpen demo code also. Kindly give some reference on this.

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Alice_Yang
NXP TechSupport
NXP TechSupport

Hello @Balaji_KG 

 

I tested your project with lpcxpresso804 board, the PINT with High level interrupt  works well.

You can set a breakpoint in PIN_INT0 interrupt function as below:

Alice_Yang_0-1687245659132.png

 

When input high level on pio0_13 pin, will enter this interrupt function.

 

BR

Alice

 

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Balaji_KG
Contributor II

Hello @Alice_Yang ,

 I attached my project for your reference.

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Alice_Yang
NXP TechSupport
NXP TechSupport

Hello @Balaji_KG 

 

I tested your project with lpcxpresso804 board, the PINT with High level interrupt  works well.

You can set a breakpoint in PIN_INT0 interrupt function as below:

Alice_Yang_0-1687245659132.png

 

When input high level on pio0_13 pin, will enter this interrupt function.

 

BR

Alice

 

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Balaji_KG
Contributor II

Dear @Alice_Yang ,

                    I will check this on my board. Thanks for your support.

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Balaji_KG
Contributor II

Dear @Alice_Yang ,

                         I checked the demo code through MCU expresso IDE. In that I configured GPIO pin and all registers properly. still, Level triggering not working but edge triggering is working properly. 

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Alice_Yang
NXP TechSupport
NXP TechSupport

Hello @Balaji_KG 

Please share your project, thanks.

 

BR

Alice

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Alice_Yang
NXP TechSupport
NXP TechSupport

Hello @Balaji_KG 

How do you test on LPCopen demo? How about change to another pin?

And please check all the related registers configured correctlly.

 

BR

Alice

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