How to read a CV with Daisy Patch?

Software Development
1

How do you read the CV value from an input on Daisy Patch?

I tried patch.GetCvValue(DaisyPatch::CV_1).

I took a look at the daisy_patch.h and doesn’t look you can read the CV value but, I’m not really sure what I’m looking for. libDaisy/src/daisy_patch.h at master · electro-smith/libDaisy · GitHub

The new web page doesn’t show Daisy Patch: Hardware - Daisy

2

If I recall correctly, the CV inputs go through the pots CTRL_1-CTRL_4. CV is read exactly like reading the pots.

The new website still seems pretty useless as documentation.

3

One way to do this is to use the Parameter class

#include "daisysp.h"
#include "daisy_patch.h"

using namespace daisy;
using namespace daisysp;

DaisyPatch hw;

Parameter firstKnob;

Set the min max and your desired curve in main

int main(void)
{
    hw.Init();

    firstKnob.Init(hw.controls[0], 0.0, 1.0f, Parameter::LINEAR);

    hw.StartAdc();
    hw.StartAudio(AudioCallback);
    while(1) {}
}

and in your AudioCallback

void AudioCallback(AudioHandle::InputBuffer in, AudioHandle::OutputBuffer out, size_t size)
{
    hw.ProcessAnalogControls();
    hw.ProcessDigitalControls();
    float first = firstKnob.Process();

With the Patch, CV input and pot are connected, which is different than the Patch.init

1 Like
4

That’s really useful thanks!

6

Try using patch.controls[CV_1].Process() before reading the CV value