timing of VPIF interrupts，VP_VERTINT0 and VP_VERTINT1?

Can you please clarify which part device you are working on. And also if you are using any TI reference software.

Thanks

yao zhang,

can you please provide   more details. you have referred 10 times and 16 times, is it per second? please provide details. which platform you are working on? is it dm6467?

This application is  used to be a camera. Code is vpif_capture.c in kernel,  it is modified(lines interrupt is added) and compiled as a module. Thank you.

Nagabhushana,

yeah, it is DM6467. When I want to get a frame from VPIF, for example, resolution of the frame is 1632X1232. VP_VERTINT1 occured per 77 lines. so 16 times in all.

The problem is that VP_VERTINT1 only occured 10 times at frist frame. And VP_VERTINT0 is occured before VP_VERTINT1. I think, VP_VERTINT0 is used as beginning of a frame, well then, VP_VERTINT0 would be 16 times. I don't know why. Thanks.

Hi,

Are you setting number of lines for the line interrupt?

Thx,

Brijesh Jadav

Hi, Brijesh Jadav,

It is setting that 77 lines .

Thx.

You mean 0x77 (119) lines? In that case correct number of interrupts per frame should be - 1232/119 = 10 which is what you are observing.

Nagabhushana，

I'm sorry! I'm careless. 77 lines is not hex, but decimalist. 1232/77 = 16.