MCUdude
commented
5 years ago Well, the library is in fact intended for advanced tinkers who already know the Arduino framework well. I've provided some interface functions to control the ADAU1701, and then it's up to the users to adjust these variables with whatever they want.
Examples like the ones you request isn't necessary very useful to the advanced user. Personally I hate when I want to test a component (and LCD for instance) and then the example code requires me to connect a bunch of potentiometers and switches to work.
I can give you a quick example here though. Let's say you've loaded example 1 (1_Volume) and want to control the volume using a potentiometer. That's quite easy.
// Create two signed 8-bit variables (holds -127 -> 127)
int8_t currentVolumeValue = -80;
int8_t newVolumeValue = -80;
void loop()
{
// Map the analogRead value from 0->1023 to -80->0
newVolumeValue = map(analogRead(A0), 0, 1023, -80, 0);
// If we have a change
if(newVolumeValue != currentVolumeValue)
{
// Write new volume value to DSP
dsp.volume_slew(MOD_SWVOL1_ALG0_TARGET_ADDR, newVolumeValue);
// Prevent this if-query to be executed when there's no change
currentVolumeValue = newVolumeValue;
}
}I haven't tested the code above on read hardware, but there's no reason why it shouldn't work.
yentzee
Hi, first of all thanks a lot for sharing your work with everyone. Is there any example online which documents the whole process of including buttons or encoders on an arduino to control parameters? I know that this is a dumb question resulting of a lack of knowledge. Unfortunately I am more of a musician than a person who is able to program and would just be really happy to have a useable and especially computer independent unit (i am in the process of optimizing my studio and due to the lack of space i have to think of alternatives than huge porous absorbers to get room resonances under control - i want to use the 1701 with a mic attached to an active subwoofer for a kind of low frequency noise canceling system. Unfortunately this system needs a lot of trial an error to find the right spot for it to work, prevent feedback etc and this just isn't possible with a computer attached to it)