Accurate Control the I2C writing timing

[Anonymous]

For the register writing by I2C in raw data sensor,

   

We should avoid making the exposure time or gain change during the exposure time,

   

Might I know how to control the accuracy time for writing I2C?

   

For example, Can we set interrupt routine because of the frame valid (FV) signal going high?

[Anonymous]

Hi,

   

The FV signal is a GPIF Signal, so you cannot use it as an ordinary GPIO INterrupt. You can stop your sensor temporarily for a while and then change the exposure time and gain.

   

Regards,

   

-Madhu Sudhan

[Anonymous]

Hi Madhu,

   

Thanks for your answer,

   

However, it still can't fix my problem,

   

For AE or AWB tuning, you can't just stop sensor temporarily, then set the I2C command,

   

Because the continuity for video out is very important for some applications. (For example, Surveillance)

   

If not to set interrupt routine, then if any other method to reach?

   

Thanks

   

John Tseng