Multiplexer's enable input control

[mkothencz]

Hello,

I would like to connect three button multiplexer's output to one pin on an Arduino Leonardo. I would like to use multiplexer's enable input to select them in sequence.

Is this possible? (I tried to write ,,digitalWrite(Pin, LOW/HIGH)" before each Digital buttonsX[]={.... but not work.)

My code now:

#include <MIDI_Controller.h>
AnalogMultiplex multiplexer1(13, {4,3,12,6,} );
AnalogMultiplex multiplexer2(13, {4,3,12,6,} );
AnalogMultiplex multiplexer3(13, {4,3,12,6,} );

Digital buttons1[] = {
  {multiplexer1.pin(0), 0x1, 1},
  {multiplexer1.pin(1), 0x2, 1},
  {multiplexer1.pin(2), 0x3, 1},
  {multiplexer1.pin(3), 0x4, 1},
  {multiplexer1.pin(4), 0x5, 1},
  {multiplexer1.pin(5), 0x6, 1},
  {multiplexer1.pin(6), 0x7, 1},
  {multiplexer1.pin(7), 0x8, 1},
  {multiplexer1.pin(8), 0x9, 1},
  {multiplexer1.pin(9), 0xA, 1},
  {multiplexer1.pin(10), 0xB, 1},
  {multiplexer1.pin(11), 0xC, 1},
  {multiplexer1.pin(12), 0xD, 1},
  {multiplexer1.pin(13), 0xE, 1},
  {multiplexer1.pin(14), 0xF, 1},
  {multiplexer1.pin(15), 0x10, 1},
};
Digital buttons2[] = {
  {multiplexer2.pin(0), 0x1, 2},
  {multiplexer2.pin(1), 0x2, 2},
  {multiplexer2.pin(2), 0x3, 2},
  {multiplexer2.pin(3), 0x4, 2},
  {multiplexer2.pin(4), 0x5, 2},
  {multiplexer2.pin(5), 0x6, 2},
  {multiplexer2.pin(6), 0x7, 2},
  {multiplexer2.pin(7), 0x8, 2},
  {multiplexer2.pin(8), 0x9, 2},
  {multiplexer2.pin(9), 0xA, 2},
  {multiplexer2.pin(10), 0xB,2},
  {multiplexer2.pin(11), 0xC,2},
  {multiplexer2.pin(12), 0xD, 2},
  {multiplexer2.pin(13), 0xE, 2},
  {multiplexer2.pin(14), 0xF, 2},
  {multiplexer2.pin(15), 0x10,2},
};
Digital buttons3[] = {
  {multiplexer3.pin(0), 0x1, 3},
  {multiplexer3.pin(1), 0x2, 3},
  {multiplexer3.pin(2), 0x3, 3},
  {multiplexer3.pin(3), 0x4, 3},
  {multiplexer3.pin(4), 0x5, 3},
  {multiplexer3.pin(5), 0x6, 3},
  {multiplexer3.pin(6), 0x7, 3},
  {multiplexer3.pin(7), 0x8, 3},
  {multiplexer3.pin(8), 0x9, 3},
  {multiplexer3.pin(9), 0xA, 3},
  {multiplexer3.pin(10), 0xB,3},
  {multiplexer3.pin(11), 0xC, 3},
  {multiplexer3.pin(12), 0xD, 3},
  {multiplexer3.pin(13), 0xE, 3},
  {multiplexer3.pin(14), 0xF, 3},
  {multiplexer3.pin(15), 0x10,3},
};

void setup() {}
void loop() { MIDI_Controller.refresh(); }

[tttapa]

No, that is not possible at the moment.

However, there's nothing stopping you from editing the AnalogMultiplex source code to add support for the enable pin. Just enable it upon entry of the AnalogMultiplex::analogRead and AnalogMultiplex::digitalRead functions, and disable it again before returning.

One thing to keep in mind is that you'll probably run out of RAM a long time before you run out of pins.

[tttapa]

This has been implemented in tttapa/Control-Surface@c69bac999aaa2c373d4f4df503b217ada6f88165.