Hello,

In video in out example code of BF561, I got 25 frames per second(40ms acquisition time per
entire frame). In that code, there is  circular linked list of four frames for acquisition and
displaying .

But I want to do some real time processing on every input frames. And hence forth I modified
code as four frames to single frame for each acquisition and displaying.
That means only sFrame0 is on acquisition and sFrame1 is on displaying.

At core A, I am disabling DMA and PPI0 at ISR of PPIO.In main function I reconfigure and
enabled both DMA and PPI0 for next sFrame0 acquisition. After than I transfer sFrame0 to
sFrame1 by MDMA.   

At core B, sFrame1 is continuously displaying. Here I got 25 frames per second.

Now  the problem is at core A. I got PPI0 interrupt at every 80ms rather then 40ms.because of
just disabling and enabling of DMA and PPI0. Still I am not doing any processing on sFrame0. 

Why is it happening even though only disabling PPI0 not DMA? 
Is there any settling time for PPI?

If any other method for processing of input frames then kindly suggest me.

All the timing waveforms are tested on DSO.

Please help me ASAP.

With regards,
Naresh