FADER Unit and IR Unit on single task

main.cpp

#include <Arduino.h>
#include <IRsend.h>

static IRsend irsend(26);
static constexpr int input_pin = 13;

void setup() {
  irsend.begin();
}

void loop() {
  static int targetVolume = 0;
  static int currentVolume = targetVolume;

  const auto v = ::analogRead(input_pin);
  if (v <= 0) {
    targetVolume = 0;
  } else if (v >= 4096) {
    targetVolume = 4;
  } else {
    targetVolume = static_cast<int>(v / 1365) + 1;
  }
  if (targetVolume == currentVolume) {
    return;
  }
  const auto sign = targetVolume > currentVolume ? 1 : -1;
  if (sign > 0) {
    irsend.sendNEC(0x41B65DA2, 32);
  } else {
    irsend.sendNEC(0x41B6DD22, 32);
  }
  ::delay(70);
  currentVolume += sign;
}