ov5640 VTS/HTS

[adc1]

Hi,
I'm trying to configure some custom resolutions for ov5640 camera sensor. Where can I found detailed information on how to configure correctly TIMING HTS (0x380C + 0x380D) and TIMING VTS (0x380E + 0x380F) registries? OmniVision documentation do not explain clearly how these values affect image, could someone help me to understand what HTS/VTS stand for and how to calculate them?

thanks,
best regards
Andrea

[adc1]

Could anyone help me understand HTS/VTS values?

[mlinuxl]

Hello andrea, did you figure out how to calculate HTS/VTS?
I am in same problem, plus i want to enable binning pixels to get a picture with full angle from my 150 degree lens on 720p resolution and 25fps. Is this possible?
For now, i got nothing impressive... Just 15 fps and picture is cutted from sensor i can not get wide angle picture on 720p.

I got wide angle only with VGA resolution but also only 15 fps. It looks like that picture is scalled down from full resolution to VGA and sensor ISP can not give to you more than 15 fps.

Regards

Milos

[adc1]

Hi Milos,
have you solved? I haven't a formula to calculate HTS and VTS but I succeeded configuring some custom resolutions. For example 1280x960 at 45fps. You have to enable binning in 0x3821 register and setup correct subsampling increment

{0x380c, 0x07, 0, 0}, {0x380d, 0x64, 0, 0}, // HTS (1892)
{0x380e, 0x03, 0, 0}, {0x380f, 0xf2, 0, 0}, // VTS (1010)

{0x3814, 0x31, 0, 0}, {0x3815, 0x31, 0, 0}, // TIMING X/Y INC: SUBSAMPLING INCREMENT

regards,
Andrea

[Bio_TICFSL]

Hi Andrea,

If you are working with i.MX6 BSP you do not need to change HTS/VTS, and you can not change the clock for resolution, however please for change this link the resolution on it:

https://community.nxp.com/thread/388306 

Regards

[adc1]

Hi,
but if I want to add a custom image window I need to find out my custom HTS and VTS. I want to know how to calculate them, any hint?

regards