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Lookup table and volume

Question asked by jackjr on Feb 19, 2015
Latest reply on Feb 20, 2015 by jackjr

Hello,

 

It's been 2 days I've been trying to use a rotary encoder as volume control for a ADAU1701… without success.

 

I first tried to use the dedicated rotary volume control.

The only time I got it working was when there was only 3 values in the lookup table. As soon as I added more values, nothing worked anymore.

 

Then I stumbled upon an alternative way to control volume, without writeback, described here Re: ADAU1701 WP pin always high?

Guess what? Only 3 values in the lookup table worked.

For example, if the starting index is 20, I can only change between 20 and 22.

 

I joined the test project.

Are there any known bugs with these lookup tables? Or am I missing something?

 

Thanks,

Jack

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