TMS320F28035: How to catch internal interrupt from COMPx ?

RomainP

Prodigy 200 points

Part Number: TMS320F28035

Hello,

I want to set the MCU in IDLE LPM and use COMP2/3 to detect a threshold set by DACVAL and wake-up the MCU.

I don't understand how to set the good interrupt vector to be able to wake-up from IDLE LPM.

I am confused with COMPxTRIP on the comparator diagram and COMPxOUT which is discussed within ePWM submodules...

Can anybody guide me ?

Thank you

over 5 years ago

0 tlee over 5 years ago

TI__Guru 62975 points

RomainP,

The typical method is to catch the COMPnTRIP signal using an EPWM module with the assigned TRIP interrupt enabled. I'm fairly sure that you can also enable COMPnOUT on the assigned GPIO and enable a GPIO XINTn interrupt to trigger on the level change

-Tommy

0 RomainP over 5 years ago in reply to tlee

Prodigy 200 points

Hi Tommy,

I achieved to link the EPWMx module to the COMPxOUT signal which correspond to COMPxTRIP on the diagram.

Thank you.

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TMS320F28035: How to catch internal interrupt from COMPx ?