TDA2x capture VSYNC

rooney.hu

For TDA2x, we need to capture the sensor's VSYNC signal and do some operations just shortly after it. How can we get the VSYNC signal by an interrupt ? Is it already been realized in Vision SDK?

We use AR0132 as the video sensor, it's in parallel output mode.

over 8 years ago

0 Brijesh Jadav over 8 years ago

TI__Guru**** 487505 points

Hi,

There is an end of frame callback, You could use it to start processing your frame.
What operation you want to start just after VSYNC??

Rgds,
Brijesh

0 rooney.hu over 8 years ago in reply to Brijesh Jadav

Intellectual 700 points

For AR0132, we need to do context switch. So I plan to start a timer in the VSYNC ISR. And then do the context switch operation in the timer ISR to ensure that the operation is just in the middle of the frame.

According to your description, I think end of frame callback would also be OK. Could you tell me the callback name? I'll try it.

Many thanks.

0 Brijesh Jadav over 8 years ago in reply to rooney.hu

TI__Guru**** 487505 points

Hi,

You could use the callback API CaptureLink_drvCallback, in the file vision_sdk\src\links_ipu\vip_capture\captureLink_drv.c.

Regards,
Brijesh

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TDA2x capture VSYNC