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	- Project: Humidity Control
	- Source Code compiled for: Arduino Uno
	- Source Code created on: 2024-02-24 06:45:56

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* turn on  activebuzzer when humiditi hit below 70% */
/****** SYSTEM REQUIREMENT 2 *****/
	/* stop activebuzzer when humidity is above 90% */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include     // Library for DHT sensors

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs(void); // Function to update the output pins based on system requirements

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t humiditysensor_DHT22_DOUT_PIN_D2 = 2;
const uint8_t humiditysensor_DHT22_DOUT_PIN_D3 = 3;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t ultrasonichumid_ActiveBuzzer_output_PIN_D4 = 4;
const uint8_t ultrasonichumid_ActiveBuzzer_output_PIN_D5 = 5;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool ultrasonichumid_ActiveBuzzer_output_PIN_D4_rawData = 0;
bool ultrasonichumid_ActiveBuzzer_output_PIN_D5_rawData = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float ultrasonichumid_ActiveBuzzer_output_PIN_D4_phyData = 0.0;
float ultrasonichumid_ActiveBuzzer_output_PIN_D5_phyData = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES *****/
DHT dht(humiditysensor_DHT22_DOUT_PIN_D2, DHT22);    // Create a DHT object

void setup(void)
{
    pinMode(humiditysensor_DHT22_DOUT_PIN_D2, INPUT_PULLUP);
    pinMode(humiditysensor_DHT22_DOUT_PIN_D3, INPUT_PULLUP);

    pinMode(ultrasonichumid_ActiveBuzzer_output_PIN_D4, OUTPUT);
    pinMode(ultrasonichumid_ActiveBuzzer_output_PIN_D5, OUTPUT);

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

    Serial.begin(9600);    // Start serial communication
    Serial.println(F("DHTxx test!"));    // Print initialization message
}

void loop(void)
{
    updateOutputs();    // Refresh output data

    delay(2000);    // Wait for 2 seconds

    float h = dht.readHumidity();    // Read humidity value from DHT sensor
    float t = dht.readTemperature();    // Read temperature value from DHT sensor
    float f = dht.readTemperature(true);    // Read temperature value in Fahrenheit from DHT sensor

    if (isnan(h) || isnan(t) || isnan(f))
    {
        Serial.println(F("Failed to read from DHT sensor!"));
        return;
    }

    float hif = dht.computeHeatIndex(f, h);    // Calculate heat index in Fahrenheit
    float hic = dht.computeHeatIndex(t, h, false);    // Calculate heat index in Celsius

    Serial.print(F("Humidity: "));
    Serial.print(h);
    Serial.print(F("%  Temperature: "));
    Serial.print(t);
    Serial.print(F("°C "));
    Serial.print(f);
    Serial.print(F("°F  Heat index: "));
    Serial.print(hic);
    Serial.print(F("°C "));
    Serial.print(hif);
    Serial.println(F("°F"));

    // Check system requirements and update outputs accordingly
    if (h < 70) {
        ultrasonichumid_ActiveBuzzer_output_PIN_D4_rawData = HIGH; // Turn on active buzzer
    } else if (h > 90) {
        ultrasonichumid_ActiveBuzzer_output_PIN_D4_rawData = LOW; // Turn off active buzzer
    }
}

void updateOutputs()
{
    digitalWrite(ultrasonichumid_ActiveBuzzer_output_PIN_D4, ultrasonichumid_ActiveBuzzer_output_PIN_D4_rawData);
    digitalWrite(ultrasonichumid_ActiveBuzzer_output_PIN_D5, ultrasonichumid_ActiveBuzzer_output_PIN_D5_rawData);
}