Hi There,

Problem Statement:
When we connect OV5640 camera with I2C master (not SCCB) it should not send an ACK on the 9th clock cycle and, therefore, should not work with our I2C master. However, when we connect our I2C master to the OV5640 camera, we are observing an ACK.

Help:

We reviewed the documentation but could not find explicit confirmation that the camera should send an ACK. Can someone please explain what may be the issue?

Thanks,
Vhigneshwaran

Hi vhigneshwaran_701,

This is Timmy Kao at Zeroplus Logic Analyzers in Taipei, Taiwan. My R&D team is professional on decoding I2C protocol and presenting its waveforms and packets. If you can provide me some files which can de decoded by Logic Analyzer, I believe that we can find the bug as you mentioned the problem above.

My email address is Timkao@zeroplus.com.tw 

Phone number: +886-2-66202225 Ext.380 

Please send me an email or give me a call, so I can help your project ASAP. Thank you.