Using LCD Class Object as static member

Projects Programming
8

It's odd all around. But, if you want a SINGLETON:
PCI.h:

#ifndef PCI_CLASS
#define PCI_CLASS

#include <LiquidCrystal.h>

class PCI {

  public:
    PCI(const PCI &) = delete;
    PCI &operator=(const PCI &) = delete;
    static PCI &getInstance();
    LiquidCrystal lcd;

  private:
    PCI() : lcd(12, 11, 5, 5, 3, 2) {}

};

extern PCI &singleton;

#endif

PCI.cpp:

#include "PCI.h"

PCI & PCI::getInstance() {
  static PCI instance;
  return instance;
}

PCI &singleton {PCI::getInstance()};

Main .ino:

#include "PCI.h"

void setup() {
  singleton.lcd.begin(16, 2);
  singleton.lcd.print("Hello World");
}

void loop() {
}