How to build a pre-clipping detector in SigmaStudio?

Hello Mark,

I am guessing you do not have the correct format for the GPIO output. If you have a few minutes just delete any proprietary things from your project and just keep the level sensing part and attach it to a reply.

There are many ways to do this.

I had worked up a project a while back that varies the pulse width of the GPIO output to make an LED go brighter when the level is higher. This project shows you how to sense the level.

you will not need the pulse generator to just do a clipping indicator. I suggest you use the good old ABCD block to compare to a level that you want to call "clipping" and then send out a "1" in unsigned integer format to light the LED. Send out a zero to shut it off. Although, I am making some assumptions as to how your hardware is wired and also there are some register settings that are important like the "Invert" setting.

Here is my project:

6888.ADAU1701 GPIO output to a single LED to change brightness based on level.dspproj

Dave T

Hi Dave,

Thanks for getting back to me. I've enjoyed your SigmaStudio video tutorials on YouTube. If only the wiki were as useful.

I've been building this project in sections, so there was nothing proprietary to remove.

GPIO experiment 3.dspproj

I'll take a look at your template the first chance I get.

Mark

Hi Dave,

I found the post titled "ADAU1701 signal level detection for GPIO logical output" and the explanation about how the ABCD block works was most helpful; thanks for the tip.

I don't need the dual threshold, so I simplified the circuit and got just what I need. Feel free to share the attached.

adau170x_signal detection to GPIO-4.dspproj

Thank you again for your help,

Mark