CoopCommand

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>;
LiquidCrystal_I2C lcd(0x27, 20, 4); // Set I2C Address and display size

// pin assignments
const int photocellPin = A0;    // analog input pin for photocell
int button1 = 2;
int button2 = 3;
int button3 = 4;
#define DHTPIN 13     // what pin we're connected to
#define DHTTYPE DHT22   // DHT 22  (AM2302)
DHT dht(DHTPIN, DHTTYPE); //// Initialize DHT sensor for normal 16mhz Arduino

// Menu Variables and States

unsigned long dhtDelay = 2000; //delay so sensor is read every 2 seconds
unsigned long lastDhtReadingTime = 0; // the last time the DHT22 was read
bool menuOn = true; // state of the display menu
int menu[5]; // number of menu items
bool doorOpen = true; // is the coop door open or closed
int optionSelect = 0; //which menu option is selected
int lastOptionSelect = 0;
int lastItemSelect = 0;
int itemSelect = 0;
int coopTemp = 4;
int closeDoor = 20;
int hotTemp = 30;
int coldTemp = 2;
int waterTemp = 2;
int chk;
float hum;  //Stores humidity value
float temp; //Stores temperature value
int photocellReading;             // analog reading of the photocell
int photocellReadingLevel;        // photocell reading levels (night, light)
unsigned long photocellReadingDelay = 6000;     // 600000 = 10 minute
unsigned long lastPhotocellReadingTime = 0;       // the last time the photocell was read
int buttonState1 = 0; // current state of each button
int buttonState2 = 0;
int buttonState3 = 0;
int lastButtonState1 = 0;     // previous state of each button
int lastButtonState2 = 0;
int lastButtonState3 = 0;
unsigned long displayTimer = 6000; // timer to automatically turn on the display
unsigned long lastDisplayTimer = 0;



void setup() {
  // put your setup code here, to run once:
  dht.begin();
  pinMode(photocellPin, INPUT);
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);
  pinMode(button3, INPUT);
  lcd.begin();
  lcd.clear();
  lcd.home();
  lcd.print(" Coop Command");
  lcd.setCursor(0, 1);
  lcd.print(" Control Center");
  lcd.setCursor(0, 2);
  lcd.print(" V1.0");
  lcd.setCursor(0, 3);
  lcd.print(" LCD TEST/MENU TEST");
  delay(2000);
  lcd.clear();
}



void ventFan() {
  if ((unsigned long)(millis() - lastDhtReadingTime) >= dhtDelay) {
    lastDhtReadingTime = millis();
    hum = dht.readHumidity();
    temp = dht.readTemperature();
    coopTemp = temp;
  }
}

void coopDoor() {
  photocellReading = analogRead(photocellPin);
  if ((unsigned long)(millis() - lastPhotocellReadingTime) >= photocellReadingDelay) {
    lastPhotocellReadingTime = millis();
    if (photocellReading >= 0 && photocellReading <= 20) {
      photocellReadingLevel = 1;
    }
    else if (photocellReading >= 125) {
      photocellReadingLevel = 0;
    }
  }
}


void readButtons() {
  buttonState1 = (digitalRead(button1));
  buttonState2 = (digitalRead(button2));
  buttonState3 = (digitalRead(button3));
  if (buttonState1 != lastButtonState1) {
    if (buttonState1 == LOW) { //if the enter/back button has been pressed
      lastDisplayTimer = millis();
      if (itemSelect == 0) { //if we are not in the settings change
        itemSelect = 1;
      }
      else if (itemSelect == 1) {
        itemSelect = 0;
      }
    }
    lastButtonState1 = buttonState1;
  }
  if (itemSelect == 0) { // if we are not adjusting settings

    if (buttonState2 != lastButtonState2) { //if the right button has been pressed
      if (buttonState2 == LOW) { //if the right button has been pressed
        lastDisplayTimer = millis();
        if (optionSelect <= 3) { //if we are not past the last menu screen
          optionSelect ++;
        }
        else if (optionSelect == 4) { // if we are at the last menu screen
          optionSelect = 0;
        }
      }
      lastButtonState2 = buttonState2;
    }
    if (buttonState3 != lastButtonState3) { //if the left button has been pressed
      if (buttonState3 == LOW) { //if the left button has been pressed
        lastDisplayTimer = millis();
        if (optionSelect > 0) { //if we are not at the first menu screen
          optionSelect --;
        }
        else if (optionSelect == 0) {
          optionSelect = 3;
        }
      }
      lastButtonState3 = buttonState3;
    }
  }

  else if (itemSelect == 1) { // if we are adjusting settings
    buttonState2 = (digitalRead(button2));
    buttonState3 = (digitalRead(button3));

    if (buttonState2 != lastButtonState2) { //if the right button has been pressed
      if (buttonState2 == LOW) { //if the right button has been pressed
        lastDisplayTimer = millis();
        if (optionSelect == 1) { //if we are adjusting the Vent Fan Temp
          hotTemp = (hotTemp + 5);
        }
        if (itemSelect == 2) { // if we are adjusting the Water Heater Temp
          coldTemp = (coldTemp + 1);
        }
        if (itemSelect == 3)  { // if we are adjusting the Door Light Sensor
          closeDoor = (closeDoor + 5);
        }
      }
      lastButtonState2 = buttonState2;
    }
    if (buttonState3 != lastButtonState3) { //if the left button has been pressed
      if (buttonState3 == LOW) { //if the left button has been pressed
        lastDisplayTimer = millis();
        if (optionSelect == 1) { //if we are adjusting the Vent Fan Temp
          hotTemp = (hotTemp - 5);
        }
        if (itemSelect == 2) { // if we are adjusting the Water Heater Temp
          coldTemp = (coldTemp - 1);
        }
        if (itemSelect == 3)  { // if we are adjusting the Door Light Sensor
          closeDoor = (closeDoor - 5);
        }
      }
      lastButtonState3 = buttonState3;
    }
  }
}

void displayMenu() {
  if (menuOn) { // if the display is supposed to be on
    lcd.display(); // turn the display on
    lcd.backlight();

    if (optionSelect != lastOptionSelect) {
      lcd.clear();
      lastOptionSelect = optionSelect;
    }
    else if (itemSelect != lastItemSelect) {
      lcd.clear();
      lastItemSelect = itemSelect;
    }

    switch (optionSelect) {

      case 0:
        lcd.home();
        lcd.print("    Coop Command");
        lcd.setCursor(0, 1);
        lcd.print("<                  >");
        lcd.setCursor(0, 2);
        lcd.print("   Control Center");
        lcd.setCursor(0, 3);
        lcd.print("   Firmware V1.0");
        break;

      case 1:
        if (itemSelect == 0) {
          lcd.home();
          lcd.print("  Coop Temp: ");
          lcd.print(coopTemp);
          lcd.print(" C");
          lcd.setCursor(0, 1);
          lcd.print("<                  >");
          lcd.setCursor(0, 2);
          lcd.print("Ventilation Fan: ");
          lcd.print("OFF");
        }
        if (itemSelect == 1) {
          lcd.home();
          lcd.print("  Coop Temp: ");
          lcd.print(coopTemp);
          lcd.print(" C");
          lcd.setCursor(0, 1);
          lcd.print("<                  >");
          lcd.setCursor(0, 2);
          lcd.print("Fan On Temp: ");
          lcd.print(hotTemp);
        }
        break;

      case 2:
        if (itemSelect == 0) {
          lcd.home();
          lcd.print("  Water Temp: ");
          lcd.print(waterTemp);
          lcd.print(" C");
          lcd.setCursor(0, 1);
          lcd.print("<                  >");
          lcd.setCursor(0, 2);
          lcd.print("  Water Heat: ");
          lcd.print("ON");
        }
        if (itemSelect == 1) {
          lcd.home();
          lcd.print("  Water Temp: ");
          lcd.print(waterTemp);
          lcd.print(" C");
          lcd.setCursor(0, 1);
          lcd.print("<                  >");
          lcd.setCursor(0, 2);
          lcd.print("  Heat On Temp: ");
          lcd.print(coldTemp);
        }
        break;

      case 3:
        if (itemSelect == 0) {
          lcd.home();
          lcd.print("  Coop Door: ");
          lcd.print("OPEN");
          lcd.setCursor(0, 1);
          lcd.print("<                  >");
          lcd.setCursor(0, 2);
          lcd.print("  Light Value: ");
          lcd.print(photocellReading);
        }
        if (itemSelect == 1) {
          lcd.home();
          lcd.print("  Coop Door: ");
          lcd.print("OPEN");
          lcd.setCursor(0, 1);
          lcd.print("<                  >");
          lcd.setCursor(0, 2);
          lcd.print("  Light Adjust: ");
          lcd.print(closeDoor);
        }
        break;
    }

    if ((unsigned long)(millis() - lastDisplayTimer) >= displayTimer) {
      menuOn = false;
    }
  }
  else if (!menuOn) { // if the display is supposed to be off
    lcd.noDisplay(); // turn the display off
    lcd.noBacklight();
  }
  if ((buttonState1 == 0) && (!menuOn)) {
    menuOn = true;
    lastDisplayTimer = millis();
    optionSelect = 0; //back to front screen
    itemSelect = 0;
  }
}



void loop() {
  // put your main code here, to run repeatedly:
  readButtons();
  ventFan();
  coopDoor;
  displayMenu();
}