/*

GPIO VP = 36 menu subir
GPIO VN = 39 menu descer
GPIO 34 = menu entrar
GPIO 35 = menu sair

Ao iniciar

linha 0 coluna 3: Controle
linha 1 coluna 3: Temp e Umid

1. Set Crlt Temp
  1.1
2. Set Crlt Umid
  2.1
3. Set Velo Insf
  3.1

IO
1 - subir menu
2 - descer menu
3 - entrar menu
4 - sair menu

*/

#include<LiquidCrystal_I2C.h> //biblioteca do display i2c
#include<Wire.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); //0x27 endereço no barramento i2c, 16, 2 colunas e linhas
#define Menu_up 36
#define Menu_dw 39
#define Menu_in 34
#define Menu_out 35

int menu1=0, posicao;

//gpio SDA 21
//gpio SCL 22

void setup() 
{
  Serial.begin(9600);

  //------------configuração display-------------------
  lcd.init(); //iniciar o display
  lcd.backlight(); //acender o backlight
  lcd.setCursor(3, 0);
  lcd.print("Iniciando"); // escrever no lcd
  delay(1000);
  lcd.clear(); // limpar a tela do display
 //---------------------ENTRADAS-----------------------
  pinMode(Menu_up, INPUT);
  pinMode(Menu_dw, INPUT);
  pinMode(Menu_in, INPUT);
  pinMode(Menu_out, INPUT);
}

void loop()
{
  //if((digitalRead(Menu_up)) == HIGH);
  //{
  //Serial.println(Menu_up);
  //  delay(100);
 // }
  if(!menu1)
  {
    lcd.setCursor(0,0);
    lcd.print("Desenvolvido por");
    lcd.setCursor(2,1);
    lcd.print("Ronys Moura");
  }
  else
  {
    switch(menu1)
    {
      case 1:
      lcd.setCursor(0,0);
      lcd.print(">> ");
      lcd.setCursor(0,0);
      lcd.print(" >>Set Crtl Temp");
      lcd.setCursor(0,1);
      lcd.print("Set Crtl Umid");
      break;

      case 2:
      lcd.setCursor(0,0);
      lcd.print("Set Crtl Temp");
      lcd.setCursor(0,1);
      lcd.print(">> ");
      lcd.setCursor(0,1);
      lcd.print(" >>Set Crtl Umid");
      break;

      case 3:
      lcd.setCursor(0,0);
      lcd.print("Set Crtl Umid");
      lcd.setCursor(0,1);
      lcd.print(">> ");
      lcd.setCursor(0,1);
      lcd.print(" >>Set vel motor");
      break;
    }
  }

  if(digitalRead(Menu_dw))
  {
    lcd.clear();
    if(menu1 >= 3)
    {
      menu1=3;
    }
    else
    {
      menu1++;
    }
    Serial.println(String(menu1)+"\n");
    delay(100);
  }

  if(digitalRead(Menu_up))
  {
    lcd.clear();
    if(menu1 <= 1)
    {
      menu1=1;
    }
    else
    {
      menu1--;
    }
    Serial.println(String(menu1)+"\n");
    delay(100);
  }
}