/* ABE 80 Exercise 7
Interfacing Multiple Devices
Submitted by: Jayson J. Labrador
November 6, 2023
*/

#include <DHT.h>
#include <LiquidCrystal_I2C.h>

int redLED = 9;
int buzz = 8;
DHT dht1 (10, DHT22);
DHT dht2 (11, DHT22);
DHT dht3 (12, DHT22);
LiquidCrystal_I2C lcd (0x27, 20, 4);

float t1;
float t2;
float t3;
float ave_T;

float h1;
float h2;
float h3;
float ave_H;

void setup() {
Serial.begin(9600);
pinMode(redLED, OUTPUT);
pinMode(buzz, OUTPUT);
dht1.begin();
dht2.begin();
dht3.begin();
lcd.init();
lcd.backlight();
}

void loop() {
  t1 = dht1.readTemperature();
  t2 = dht2.readTemperature();
  t3 = dht3.readTemperature();
  ave_T = (t1 + t2 + t3)/3;

  h1 = dht1.readHumidity();
  h2 = dht2.readHumidity();
  h3 = dht3.readHumidity();
  ave_H = (h1 + h2 + h3)/3;

  Serial.print("T1 = ");
  Serial.print(t1, 1);
  Serial.print("C, ");
  Serial.print("H1 = ");
  Serial.print(h1, 1);
  Serial.print("%");

  Serial.println();

  Serial.print("T2 = ");
  Serial.print(t2, 1);
  Serial.print("C, ");
  Serial.print("H2 = ");
  Serial.print(h2, 1);
  Serial.print("%");

  Serial.println();

  Serial.print("T3 = ");
  Serial.print(t3, 1);
  Serial.print("C, ");
  Serial.print("H3 = ");
  Serial.print(h3, 1);
  Serial.print("%");

  Serial.println();

  lcd.setCursor(0, 0);
  lcd.print(" ABE 80|E7|LABRADOR");

  lcd.setCursor(3, 1);
  lcd.print("T_ave: ");
  lcd.print(ave_T);
  lcd.print("C");

  lcd.setCursor(3, 2);
  lcd.print("H_ave: ");
  lcd.print(ave_H);
  lcd.print("%");

  if(ave_T > 30 && ave_H > 80){
    digitalWrite(redLED, HIGH);
    tone(buzz, 300, 500);
    lcd.setCursor(7, 3);
    lcd.print("ALERT!");
  }

  else{
    digitalWrite(redLED, LOW);
    lcd.setCursor(7, 3);
    lcd.print("NORMAL");
  }

  delay(2000);
  lcd.clear();
}