Hi to all, maybe this is an old question but I search in this and other forum about this matter. I'm trying to get a test bar from the camera and I got the esp32 clocking the ov7670 at 8Mhz and using the CLKRC and DBLV register to get a PCLK of 24Mhz
and for that I got this config:
uint8_t COM7[2] = {0x12,0x12};
uint8_t COM17[2] = {0x42,0x08};
uint8_t CLKRC[2] = {0x11,0x81};
uint8_t DBLV[2] = {0x6B,0x80};
This is the simplest config, but I'm unable to see the bar (just green screen with it seems to be the bar but undefine).
I tried this configs from this link to get the qvga but still the green screen. It seems to me that the ov7670 i got ( I bought from aliexpress) is a cheaper version of the omnivision.
Why is there a different register with the BAR test? register 7.17 and register 70 and 71 also got this BAR, which one is the correct?
how do I reduce the green color in the camera?
Cheers
Gastón
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