#include <LiquidCrystal.h>
int counter=0;
int mil=0;
int ltr=0;

const int button = 6;
const int button2 = 7;
const int button3 = 8;
const int LED = A0;
const int LED1 = A1;
const int LED2 = A2;
boolean swap = false ;
boolean swap1 = false ;
boolean swap2 = false ;
boolean swap3= false;


//inicia o display e seleciona as entradas e saidas
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {

lcd.begin(16, 2);
pinMode(button, INPUT);
pinMode(button2, INPUT);
pinMode(button3, INPUT);
pinMode(A2,OUTPUT);
pinMode(A1,OUTPUT);
pinMode(A0,OUTPUT);




}

void loop() {

int state =0;
int state2 =0;
int state3 =0;
int state4 =0;
//declears states and buttons
state = digitalRead(button);
state2 = digitalRead(button2);
state3 = digitalRead(button3);
//controls the menu
if (state == HIGH) {
delay(250);
counter=counter+1;
}
if (state2 == HIGH) {
delay(250);
counter=counter-1;
}

if (counter<0){
counter=3;
}
if (state4 == HIGH) {
digitalWrite(LED,LOW);
digitalWrite(LED1,LOW);
digitalWrite(LED2,LOW);
// button pressed active led corosponds
}



//menu
switch(counter){
case 0:
if (state3 == HIGH & swap==false ){
delay(150);
swap=true;
}else{
delay(150);
if(swap==true & state3==HIGH){
swap=false;
}
}

lcd.setCursor(0, 0);
lcd.print("100ml");
lcd.setCursor(0,1);
if (swap==1){
lcd.print("ON ");
digitalWrite(A0,HIGH);
}else{
lcd.print("OFF");
digitalWrite(A0,LOW);
}

break;


case 1:

if (state3 == HIGH & swap1==false ){
delay(150);
swap1=true;
}else{
delay(150);
if(swap1==true & state3==HIGH){
swap1=false;
}
}

lcd.setCursor(0, 0);

lcd.print("Litre pour");
lcd.setCursor(0,1);
if (swap1==1){
lcd.print("ON ");
digitalWrite(A1,HIGH);
}else{
lcd.print("OFF");
digitalWrite(A1,LOW);
}
break;


case 2:
if (state3 == HIGH & swap2==false ){
delay(150);
swap2=true;
}else{
delay(150);
if(swap2==true & state3==HIGH){
swap2=false;
}
}

lcd.setCursor(0, 0);
lcd.print("Fault-3");
lcd.setCursor(0,1);
if (swap2==1){
lcd.print("ON ");
digitalWrite(A2,HIGH);
}else{
lcd.print("OFF");
digitalWrite(A2,LOW);
}
break;

case 3:
if (state3 == HIGH & swap3==false ){
delay(150);
swap3=true;
}else{
delay(150);
if(swap3==true & state3==HIGH){
swap3=false;
}

break;



default:
counter=0;
}




}