Arducam OV2640 auto set light mode produces an un-useable image

SPI Cameras
1

OV2640 set light is defined as

void ArduCAM::OV2640_set_Light_Mode(uint8_t Light_Mode)
{
#if (defined (OV2640_CAM)||defined (OV2640_MINI_2MP)||defined (OV2640_MINI_2MP_PLUS))
switch(Light_Mode)
{

case Auto:
wrSensorReg8_8(0xff, 0x00);
wrSensorReg8_8(0xc7, 0x00); //AWB on
break;

 

Unlike the rest of the set light settings, the image produced is un-useable.
Is 0xc7, 0x00 correct?
Examination of ov2640_regs.h, shows references to 0xc7, 0x10

Is there an online reference to confirm the correct value for OV2640 auto setting?

2

Hi,

For detailed register configuration, please refer to the official recommended configuration. If some configurations cannot take effect, the original manufacturer’s support is required.

The configuration document is as follows

 

3

Thanks, the manual is very useful.

It shows that (0xc7, 0x10) (page 12) switches on simple AWB - Simple White Balance.

I can not find an explanation of Light balance Auto on page 14
write_SCCB(0xc7, 0x00); //AWB on.

This contradicts page 12 and could explain the bizare results from setting 0xc7 to 0.

 

4

I think you are right. Due to the confidentiality of the original OV, we do not have a complete manual, only the register reference configuration. The meaning of each bit of the above register is actually not clear to us.