Trying to setVelocity for all notebutton values in mux with piezo device

[marlow77]

Hello,

I'm trying to do what is stated in this discussion:
#283

Specifically, I have a 4067 mux and a TTP223 touch sensor attached to one of the pins and had to invert the pins to read them, but it works great!

But then i wanted to add a piezo device to update the velocity for the mux values to create a midi button controller, but it gives me the following error:

error: request for member 'setVelocity' in 'buttons', which is of non-class type 'CS::Bankable::NoteButton [16]'
     buttons.setVelocity(velocityInput.getValue());
             ^~~~~~~~~~~

exit status 1

Compilation error: request for member 'setVelocity' in 'buttons', which is of non-class type 'CS::Bankable::NoteButton [16]'

I looked in the code and NoteButtons has that setVelocity option, so I don't understand why it isn't working. Any help would be appreciated.

This is the full arduino code I have so far, and works if I remove the velocity section I took from the earlier post I referenced above.

/**
 * @brief   This is an example of the AnalogMultiplex class.
 * 
 * ### Connections
 *  - 9:  CD74HC4067 address pin S0
 *  - 10: CD74HC4067 address pin S1
 *  - 11: CD74HC4067 address pin S2
 *  - 12: CD74HC4067 address pin S3
 *  - A0: CD74HC4067 signal pin ("common input/output")
 *  
 * Optionally you can connect the enable pin as well, this is useful
 * if you want to use multiple multiplexers with the same address 
 * lines and the same analog input. Otherwise, just connect the enable
 * pin to ground.
 * 
 * If you are using a 3-bit multiplexer, like the CD74HC4051, you can
 * uncomment the code specific to this multiplexer, and only use three
 * address pins.
 *  
 * ### Behavior
 * Connect some potentiometers or other analog sensors to the 16 inputs
 * of the multiplexer, and open the serial monitor (CTRL+SHIFT+M) or the
 * serial plotter (CTRL+SHIFT+L). You should see all 16 signals printed
 * or plotted.
 * 
 * Written by Pieter P, 31-01-2019  
 * https://github.com/tttapa/Control-Surface
 */

#include <Control_Surface.h> // Include the Control Surface library

// Instantiate a MIDI over HairlessMIDI_Interface.

HairlessMIDI_Interface midi;

// Instantiate a Transposer that can transpose from one octave down to one
// octave up
Transposer<-12, +12> transposer;

// Instantiate a Selector to change the transposition
IncrementDecrementSelector<transposer.getNumberOfBanks()> selector = {
  transposer,
  {25, 33},
  Wrap::Wrap,
};

CD74HC4067 mux = { 
  T0,               // analog pin
  {19, 23, 18, 5},  // Address pins S0, S1, S2, S3
  // 13, // Optionally, specify the enable pin
};

using namespace MIDI_Notes;

Bankable::NoteButton buttons[] = {
  {transposer, mux.pin(0), {note(C, 2), CHANNEL_1}},
  {transposer, mux.pin(1), {note(Db, 2), CHANNEL_1}},
  {transposer, mux.pin(2), {note(D, 2), CHANNEL_1}},
  {transposer, mux.pin(3), {note(Eb, 2), CHANNEL_1}},
  {transposer, mux.pin(4), {note(E, 2), CHANNEL_1}},
  {transposer, mux.pin(5), {note(F_, 2), CHANNEL_1}},
  {transposer, mux.pin(6), {note(Gb, 2), CHANNEL_1}},
  {transposer, mux.pin(7), {note(G, 2), CHANNEL_1}},
  {transposer, mux.pin(8), {note(Ab, 2), CHANNEL_1}},
  {transposer, mux.pin(9), {note(A, 2), CHANNEL_1}},
  {transposer, mux.pin(10), {note(Bb, 2), CHANNEL_1}},
  {transposer, mux.pin(11), {note(B, 2), CHANNEL_1}},
  {transposer, mux.pin(12), {note(C, 3), CHANNEL_1}},
  {transposer, mux.pin(13), {note(Db, 3), CHANNEL_1}},
  {transposer, mux.pin(14), {note(D, 3), CHANNEL_1}},
  {transposer, mux.pin(15), {note(Eb, 3), CHANNEL_1}},
};

// 7-bit filtered analog input for velocity control
FilteredAnalog<7> velocityInput = 35;


void setup() {
  Serial.begin(115200);
  Control_Surface.begin();
  mux.begin(); // Initialize multiplexer
  for (auto &button : buttons) // for each button in the buttons array
   	button.invert();
 }

void loop() {
 
  if (velocityInput.update())
    buttons.setVelocity(velocityInput.getValue());
  Control_Surface.loop();
}

[tttapa]

buttons is an array, you cannot invoke a member function on an array, you'll have to iterate over it and invoke the member function on each element:

for (auto &button : buttons)
  button.setVelocity(velocityInput.getValue());

However, in this case, you probably want to use Bankable::NoteButtons<16> class instead of 16 individual NoteButton instances.

[marlow77]

Thank you for your help with this and for all of your efforts on this library!

I truly appreciate it!!!