Any Engineer that can help with ADAU1701

Hello Sean2022,

I can give you a few examples to get you started but there will be a lot more details needed. However, one step at a time...

Also, there are many ways to do things in SigmaStudio and there are a ton of examples for the ADAU1701 on the forum so searching might be helpful.

Here is a project I put together as a graphic EQ example. The eval board only has one AUXADC pot so I used DC cells for the other bands. But like I said above, this is a starting point.

ADAU1701 Graphic EQ Example.dspproj

Here is how you do a volume control using a POT

ADAU1701 GPIO Volume.dspproj

You can also do a volume control with push buttons if you have the GPIO pins available. With the Bluetooth you will be using a lot of them for the serial interface. More on that later...

ADAU1701 Crossover with push volume and mute.dspproj

Bask to the GPIO.

The serial port uses a lot of the MP pins. Then you need four for the AUXADCs for the pots. So you may run out of pins or have a conflict with MP pins such that you need two of the functions that are on the same pin. So you need to do a study on this.

Then if you need five bands of EQ level and one volume control, there are only four AUXADCs. So you would have to somehow bank these to work for different functions or use a port expander. I am not sure exactly how to do that without a controller. Then of course you could employ a system controller to read a bunch of pots then send the levels to the DSP. That is also possible.

So you have a lot of options here.

Dave T