const byte bp_valid = 18;
const byte bp_menu = 19;
const byte bp_plus = 23;
const byte relais_statique = 5;
const byte relais_bypassA = 2;//2
const byte relais_bypassB = 4;//4
byte valid = HIGH;
byte menu = HIGH; 
byte plus = HIGH;
byte compteur_menu = 0;
byte compteur_plus = 1;
unsigned long preMillis = 0;
unsigned long previousmillis = 0;
byte dec_h = 0;
byte heure = 0;
byte h = 9;
byte m = 7;
const int lcd_delay = 30000;
const int bypass_delay = 200;
bool drap_valid = false;
bool drap_menu = false;
bool drap_plus = false;
byte drap_etat_ond = false;
byte etat_ond = 0;
byte etat_pan = 0;

//#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup()
{
	// initialize the LCD
	lcd.init();
	pinMode(bp_valid,INPUT_PULLUP);
	pinMode(bp_menu,INPUT_PULLUP);
	pinMode(bp_plus,INPUT_PULLUP);
	pinMode(relais_statique,OUTPUT);
  digitalWrite(relais_statique, LOW);
  pinMode(relais_bypassA,OUTPUT);
  digitalWrite(relais_bypassA, LOW);
  pinMode(relais_bypassB,OUTPUT);

	lcd.print("Visu Solaire");
	digitalWrite(relais_bypassB,HIGH);
	lcd.setCursor(19,1);
	lcd.print("A");
	delay(200);
	digitalWrite(relais_bypassB,LOW);}

void loop(){
	valid = digitalRead(bp_valid);
	menu = digitalRead(bp_menu);
	plus = digitalRead(bp_plus);

		if (valid == LOW || menu == LOW || plus == LOW){
		lcd.backlight();preMillis = millis();}

	heure = (h+dec_h);
	lcd.setCursor(13,0);

	if(dec_h == 0){lcd.print(F("H "));}
	
	else{lcd.print(F("E "));}

	if(heure < 10){lcd.print(F("0"));}

	lcd.print(heure);
	lcd.print(F(":"));

	if(m < 10){lcd.print(F("0"));}
		
	lcd.print(m);

	if(valid == HIGH){drap_valid = false;}
		
	if(valid == LOW && drap_valid == false){
			
		if(compteur_menu == 1){lcd.setCursor(12,0);}

		if(compteur_menu == 2){lcd.setCursor(18,1);}

		if(compteur_menu == 3){lcd.setCursor(18,2);}

		lcd.print(" ");
		compteur_menu = 0;
		compteur_plus = 0;
		drap_valid = true;}

	if(menu == HIGH){drap_menu = false;}

	if(menu == LOW && drap_menu == false){
		compteur_menu ++;

		if(compteur_menu == 4){compteur_menu = 1;}

		drap_menu = true;

		switch(compteur_menu){
			case 1: lcd.setCursor(18,2);
							lcd.print(" ");
							lcd.setCursor(12,0);
			break;
 
			case 2: lcd.setCursor(12,0);
					    lcd.print(" ");
					    lcd.setCursor(18,1);
			break;

			case 3: lcd.setCursor(18,1);
					    lcd.print(" ");
					    lcd.setCursor(18,2);
			break;}

		lcd.print(F("*"));}

	if(plus == HIGH){drap_plus = false;}

	if(plus == LOW && drap_plus == false){
		compteur_plus ++;

		if(compteur_menu == 1){

			if(compteur_plus >= 3){compteur_plus = 1;}

		dec_h = compteur_plus - 1;}

		if(compteur_menu == 2){

			if(compteur_plus >= 3){compteur_plus = 1;}

		  etat_ond = compteur_plus - 1;}

    if(compteur_menu == 3){

			if(compteur_plus >= 3){compteur_plus = 1;}

		  etat_pan = compteur_plus - 1;}
		
	drap_plus = true;}

	lcd.setCursor(15,1);
	lcd.print("Ond");
	lcd.setCursor(19,1);

	if(drap_etat_ond != etat_ond){
		previousmillis = millis();
		drap_etat_ond = etat_ond;

		if(etat_ond == 1){
			digitalWrite(relais_bypassA,HIGH);
			lcd.print("M");}
		
		else{
			digitalWrite(relais_bypassB,HIGH);
			lcd.print("A");}
	}

	if(millis() - previousmillis > bypass_delay){
		digitalWrite(relais_bypassA,LOW);
		digitalWrite(relais_bypassB,LOW);}

	lcd.setCursor(19,2);

	if(etat_pan == 1){
		digitalWrite(relais_statique, HIGH);
		lcd.print("M");}

	else{
		digitalWrite(relais_statique, LOW);
		lcd.print("A");}
	
	if(millis() - preMillis > lcd_delay){lcd.noBacklight();}
}