#include <Plaquette.h>
#include <light_CD74HC4067.h>

const int N_CHANNELS = 4; //define how many channels you are using

CD74HC4067 mux(2, 3, 4, 5); //remember to NOT use pin 0 or 1

SquareWave wave(0.1); //the frequency of reading channels
AnalogIn commonInput(A0);
float myVals[N_CHANNELS]; //the array automatically has enough space for your channels now

int currentChannel = 0;

void begin()
{
}

void step() {

  ///I would probably run this continually in the background
  //It would be cleaner to have this in a function and away from your main code.
  if (wave.rose()) {
    // Set channel.
    mux.channel(currentChannel);  
  }
  else if (wave.fell()) {
    // Print value.
    print(commonInput);
    print(" ");
    // Store value in an array
    myVals[currentChannel] = commonInput;
    currentChannel++;
    if (currentChannel >= N_CHANNELS) {
      currentChannel = 0;
      println();
    }
  }
  //code anything you want here. 
  //you can access myVals but remember to start at index 0.
}