ePWM INTERRUPT

Hi Muhammad

what happens when you acknowledge the interrupt manually by clearing the respective PIEACK bit in the PIECTRL Register, is the ISR invoked then?? It is difficult to give "the solution" there can be a lot of issues since the PIE Modul is very powerful and hence complex.

Best regards

Andreas

how can i acknoledge it manually

i will be acknoledge in start of ISR

but i think problem is not with PIE because i am getting interrupt flag in IFR that is infect in CPU core that means interuptis propogating to cpu but doesnt jump tp isr

In Code Composer Studio, enable realtime mode, add PIECTRL to the Watchwindow, and write a 1 to the respective PIEACK flag, just as you do in your ISR. If the flag is already set at startup, your ISR will never be called, unless you clear the flag...

Best

Andreas

you are right but as IEF flagis indicating that interupt has is signaled then its a matter of cpu and every thing in PIE is fine

my conclution is that processor is not responding to interupt due to some reason

Just to make sure I understod you right - if you acknowledge the flag manually, the ISR is issued, right? If this is the case, then the thing you have to do is clear the flag before enabling the interrupts in your code. TI provides a lot of examples within the controlSuite, take a look to their code too!

regards

Andreas

As Adreas mentioned, it is difficult to identify a problem like this in a forum ... my suggestion for you is to go through one of the example projects on ePWM interrupts provided with the header file package.

Muhammad Waqar Azhar said:

but i think problem is not with PIE because i am getting interrupt flag in IFR that is infect in CPU core that means interuptis propogating to cpu but doesnt jump tp isr

Is the same interrupt enabled in the CPU's IER register?

Is the CPU's INTM bit clear?

-Lori

yes corespondig IER bit is set

and INTM bit is clear

waqar