dm365 can not capture BT656 video data

vincent lee104159

Other Parts Discussed in Thread: OMAP-L138

Hi:

I have a non-standard BT656 video source as DM365 input. the difference of the non-standard BT656 video source format: sav2eav = 1472, eav2sav=344.

However when I configure the VPFE driver and application to interlaced BT.656 format, the video data can not be capture, and no vpfe interrupt. I have try to change some ISIF register such as PPLN, LFPR, SPH,LNH and so on. but no effect.

So, my question is which register should be conifg? how to get the video data?

Waiting for your help. Thanks!

Lee

over 13 years ago

0 vincent lee104159 over 13 years ago

Prodigy 30 points

Who can tell me what registers need to be configured, just ISIF and IPIPEIF ?

Now the interrupt can't be triggeried.

Thanks!

0 gary yang1 over 13 years ago in reply to vincent lee104159

Prodigy 50 points

Do you solve the problem now?

I am also encounter the problem.

0 Xiangdong Fu over 13 years ago

TI__Intellectual 995 points

You should only need to change the width and height of the capture, which corresponding to NPH and NLV registersto match the size of your capture. I am fairly sure the driver takes care of the SDOFST register automatically based on NPH. Only ISIF registers need to be changed. Is your input interlaced or progressive? You want to make sure the driver operates in the same mode as the input.

Regards,

Xiangdong

0 gary yang1 over 13 years ago in reply to Xiangdong Fu

Prodigy 50 points

Dear xiangdong：

Thanks for your reply !

I encounter the problem in the platform of OMAP-L138，my input is CMOS OV7725 which output BT.656 format video data .

Can you help me ?

0 Xiangdong Fu over 13 years ago in reply to gary yang1

TI__Intellectual 995 points

Gary,

OMAP-L138 video port is completely different from the one on DM36x. You'd better post your issue at that forum to get answers.

Regards,

Xiangdong

0 vincent lee104159 over 13 years ago in reply to Xiangdong Fu

Prodigy 30 points

Thanks for your reply!

In your views, it just need to config NPH and NLV. but in dm365 datasheet, there are just LNH and LNV, so do LNH and LNV equal to NPH and NLV ?

and my input source is progressive. Could you give me some suggestion ? Thank you!

Best regards

0 dinesh singh kutiyal over 9 years ago in reply to vincent lee104159

Prodigy 50 points

Dear all,

I am also trying to interface DM365 with a sony ccd camera which outputs: BT.656, and in this regard i want to know is there any DVSDK based linux driver available to perform the same.
Regards,
dinesh

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dm365 can not capture BT656 video data