am3505 and vpfe

David Montoya

Other Parts Discussed in Thread: TVP5150AM1, AM3505, TVP5154, TVP5150

Hello,

I am developing a system with am3505 and we have tvp5150am1 decoder. It seems that works well (verified with osciloscope). We are having problems with vpfe-capture because when we try to see image, It does not sample anything, but we can see a gray square. I am following the code usingn printk and it seems that is waiting for a interrupt, but I dont know how to generate it. Any idea? How work tvp5154?

Thank you.

over 13 years ago

0 Cvetolin Shulev-XID over 13 years ago

TI__Guru 65405 points

Hi David,

You can refer to the TRM section 6.4.6 Camera ISP Video-Processing Front End for detailed description of its usage.

You read about tvp5150 and tvp5154 and make comparison on their product pages:

http://www.ti.com/product/tvp5150

http://www.ti.com/product/tvp5154

Tsvetolin Shulev

0 David Montoya over 13 years ago in reply to Cvetolin Shulev-XID

Intellectual 360 points

Hello,

I want to connect tvp5150am1 with dm6446. It seems that works I see all the registers and it seems that settings are correct, but Linux do not catch any interrupt (VDINT0). When y execute ret = ioctl(capture.capture_fd, VIDIOC_DQBUF, &capture.capture_buf) it does not continue with the code.

I see in (SLES213.pdf) to work with ITU BT.656, I need to change only 0x03 register of tvp5150am1, for all the others registers are valid with default values.

In the DM6446 I am not sure, I change this registers:

0x50 (REC656) = 0x00000003

0x08 (SYN_MODE) = 0x00032F84

0x14 (HORZ_INFO) = 0x0000059F

0x48 (VDINT) = 0x00010000

0x18 (VERT_START) = 0x00010001

0x1C (VERT_LINES)= 0x000000EF

0x54 (CCDCFG) = 0x00008800

0x24 (HSIZE_OFF) = 0x000005A0

0x28 (SDOFST)= 0x00000249

I'm trying to watch a video of 720 * 480, I don't know how I am doing wrong.

I am working with 2.6.37 linux kernel, and with am3505.

Thank you

David M.

0 Cvetolin Shulev-XID over 13 years ago in reply to David Montoya

TI__Guru 65405 points

I recommend you to duplicate the thread in the DM64x DaVinci forum at the link below:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/99.aspx

Tsvetolin Shulev

Processors

Processors forum

am3505 and vpfe