"Climate Controller" rev_04

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    - Project: "Climate Controller"
    - Source Code compiled for: Arduino Uno
    - Source Code created on: 2024-06-30 03:09:15

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* sensor DHT22 untuk suhu dan kelembapan, dan LED */
    /* RGB. Gunakan LCD untuk menampilkan suhu dan */
    /* kelembapan. Kontrol LED RGB berdasarkan ambang */
    /* batas suhu. jika suhu rendah berwarna hijau dan */
    /* jika suhu tinggi warna merah */
/****** END SYSTEM REQUIREMENTS *****/


/****** DEFINITION OF LIBRARIES *****/
#include <Wire.h>
#include <LiquidCrystal_I2C.h>  //https://github.com/marcoschwartz/LiquidCrystal_I2C
#include <DHT.h>  //https://github.com/adafruit/DHT-sensor-library

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs(void);

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t DHT22_DOUT_PIN_D5 = 5;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t led1_LEDRGB_Red_PIN_D3 = 3;
const uint8_t led1_LEDRGB_Green_PIN_D4 = 4;

/***** DEFINITION OF I2C PINS *****/
const uint8_t lcd_LCD1602I2C_I2C_PIN_SDA_A4 = A4;
const uint8_t lcd_LCD1602I2C_I2C_PIN_SCL_A5 = A5;
const uint8_t lcd_LCD1602I2C_I2C_SLAVE_ADDRESS = 0x27;  // 39 in decimal

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool led1_LEDRGB_Red_PIN_D3_rawData = 0;
bool led1_LEDRGB_Green_PIN_D4_rawData = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float led1_LEDRGB_Red_PIN_D3_phyData = 0.0;
float led1_LEDRGB_Green_PIN_D4_phyData = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
LiquidCrystal_I2C lcd(lcd_LCD1602I2C_I2C_SLAVE_ADDRESS, 16, 2);  // Initialize the LCD with address, columns, and rows

#define DHTTYPE DHT22   // DHT 22 (AM2302)
DHT dht(DHT22_DOUT_PIN_D5, DHTTYPE);  // Initialize DHT sensor for DHT22

void setup(void)
{
  // put your setup code here, to run once:

  pinMode(DHT22_DOUT_PIN_D5, INPUT_PULLUP);

  pinMode(led1_LEDRGB_Red_PIN_D3, OUTPUT);
  pinMode(led1_LEDRGB_Green_PIN_D4, OUTPUT);

  lcd.init();  // Initialize the LCD
  lcd.backlight();  // Turn on the backlight
  lcd.setCursor(0, 0);  // Set cursor to column 0, row 0
  lcd.print("Hello, world!");  // Print a message to the LCD

  dht.begin();  // Initialize the DHT sensor

  Serial.begin(9600);  // Initialize serial communication
}

void loop(void)
{
  // put your main code here, to run repeatedly:

  updateOutputs();  // Refresh output data

  delay(2000);  // Wait a few seconds between measurements

  float h = dht.readHumidity();  // Read humidity
  float t = dht.readTemperature();  // Read temperature as Celsius

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  // Print the results to the Serial Monitor
  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.println(F("°C"));

  // Update LCD display
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(t);
  lcd.print(" C");
  lcd.setCursor(0, 1);
  lcd.print("Humidity: ");
  lcd.print(h);
  lcd.print(" %");

  // Control RGB LED based on temperature
  if (t < 25.0) {
    // Temperature is low, turn on green LED
    led1_LEDRGB_Green_PIN_D4_rawData = HIGH;
    led1_LEDRGB_Red_PIN_D3_rawData = LOW;
  } else {
    // Temperature is high, turn on red LED
    led1_LEDRGB_Green_PIN_D4_rawData = LOW;
    led1_LEDRGB_Red_PIN_D3_rawData = HIGH;
  }

  updateOutputs();  // Refresh output data
}

void updateOutputs()
{
  digitalWrite(led1_LEDRGB_Red_PIN_D3, led1_LEDRGB_Red_PIN_D3_rawData);
  digitalWrite(led1_LEDRGB_Green_PIN_D4, led1_LEDRGB_Green_PIN_D4_rawData);
}

/* END CODE */