I finally downloaded the firmware level application notes for Auto-Focusing OV3640 CMOS camera module. And also I found some source codes for firmware level (Auto-focus). That means we now control VCM (Voice Coil Motor) in OV3640 module. In our module used the embedded auto-focus solution.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2fM7bMa2A8Bxfpxf7KSXH-Ek1eYNuJNMMSG7WheoRgWO3RhWNJ4hEW05_Opr3k_uXmPpbv5I2MO8xpdfhJb4WPSy8xhyphenhypheneMZsLbOLQcH8MN81hZyi3bKdFW8_wQZuSHHSs57qRlDgSiSqn/s640/Picture2.png) |
In side of OV3640 CMOS Camera Module |
full size
The following links have app-notes and sources:
link