#include <LiquidCrystal.h>
LiquidCrystal lcd(13, 12, 14, 27, 26, 25);

#define V_memory_count 20
  long V[V_memory_count]; 
  long &Mtime = V[1]= 0; 
  long &TotalRunTime = V[2]= 0;  
  long &Openhold = V[3]= 0; 
  long &Shuthold = V[4]= 0; 
  long &PBopen = V[5]= 0; 
  long &PBopenl = V[6]= 1; 
  long &PBshut = V[7]= 0; 
  long &PBshutl = V[8]= 1; 
  long &Open_R = V[9]= 0; 
  long &Shut_R = V[10]= 0;
	long &MOpen = V[11] = 24000;
	long &MShut = V[12] = 0;

 
//	long	Mtime = 0;
//	long	TotalRunTime = 0;
//	long 	Openhold	= 0;
//	long 	Shuthold	= 0;

	bool PBo = 0;
//	bool PBopenl = 0;
//	bool PBopen = 0;
	bool PBs = 0;
//	bool PBshutl = 0;
//	bool Open_R = 0;
//	bool Shut_R = 0;
//#define PBopen 0
//#define PBshut 1

// functions ============================================V
void openpb() {
	  PBo = digitalRead(23);
			lcd.setCursor(0, 0);
      lcd.print(PBopen);
			lcd.print(" - ");
      lcd.print(PBopenl);
	if (PBo == 1)	
	{
	Mtime = Mtime + (millis() - Openhold);
	Openhold = millis();
	
	if (PBopen != PBopenl) 
			{
				PBopenl = PBopen;
			if (PBopen == 1) {
			digitalWrite(17, HIGH);
			lcd.setCursor(1, 0);
      lcd.print("Open");
			}
			else
			{ digitalWrite(17, LOW);}
			lcd.setCursor(1, 0);
      lcd.print("Shut");				
			}
	}
	else
	{
	Openhold = millis();
	}	
	
}

void shutpb() {
	PBs = digitalRead(22);
			lcd.setCursor(5, 1);
      lcd.print(PBs);
	if (PBs == 1)	
	{
	Mtime = Mtime - (millis() - Shuthold);
	Shuthold = millis();
	
	if (PBshut != PBshutl) 
					{Shut_R = PBshut; // set the relay to On
					PBshutl = PBshut;	
			lcd.setCursor(0, 1);
      lcd.print("close");	
			digitalWrite(18, HIGH);							
					}
	}
	else
	{
	digitalWrite(18,LOW);
	}
	
}

// functions ============================================A


void setup() {
      // IO intilise=========================================V   
pinMode(PBopen, INPUT);
pinMode(PBshut, INPUT);
pinMode(19, OUTPUT);
pinMode(18, OUTPUT);
pinMode(17, OUTPUT);
pinMode(16, OUTPUT);

  lcd.begin(20, 4);
  // you can now interact with the LCD, e.g.:
//  lcd.print("Hello World!");


}

void loop() {

openpb();
//shutpb() ; 
    lcd.setCursor(0, 3);
lcd.print("Mtime = ");
lcd.print (Mtime);

	if(Mtime >= MOpen) {digitalWrite(18, HIGH);}
	else 
	{digitalWrite(18,LOW);}

	if (Mtime <= MShut) {digitalWrite(19, HIGH);} 
	else
	{ digitalWrite(19, LOW);}
}