STM32F4Discovery + DCMI + OV7660 (OV7670)

Forum|Forum|12 years ago
July 21, 2013
20 replies
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Posted on July 21, 2013 at 18:42

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Tesla DeLorean

Guru

Posted on July 22, 2013 at 22:19

Not much into cameras and DCMI, but the screen shot seems to suggest you have the horizontal scan settings wrong, and not a multiple of the actual pixel count.

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jenoAuthor

Associate II

Posted on July 31, 2013 at 08:53

Thank you for the suggestion! I managed to get picture from the camera, the fault was in the python script, the picture resolution. But now I have another problem, the left side of the picture is black, but not solid black (maybe sensor problem?) and the resolution from the sensor seems to be not correct.

Tesla DeLorean

Guru

Posted on July 31, 2013 at 17:31

Look at horizontal blanking, and sync settings, or perhaps those for the front/back porch on the horizontal line signal.

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jenoAuthor

Associate II

Posted on August 01, 2013 at 08:57

I found out, that if I didn't change the resolution from the default 640*480 there is no black line, and the resolution is also ok. When I change the resolution to cif I receive 2 picture in 640 pixel width side-by-syde with black line. Maybe the camera did not crop the image, and sends windowed picture? The second attached picture's resolution is ok if I widen it to 2 picture.

I'll try to crop it with DCMI.