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	- Project: Temperature Control
	- Source Code compiled for: Arduino Uno
	- Source Code created on: 2024-01-01 11:54:09

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* Measures temperature     If temperature is greater */
	/* than 27 degrees celsius print "high temp" and turn */
	/* on red LED    if temperature is less than 25 */
	/* degrees celsius print "low temp" and turn on blue */
	/* LED    create this in a function called water_temp */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include <Arduino.h>
#include <DHT.h>

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t mydht_DHT22_DOUT_PIN_D2 = 2;
const uint8_t red_LED_PIN = 3;
const uint8_t blue_LED_PIN = 4;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
DHT dht(mydht_DHT22_DOUT_PIN_D2, DHT22);

void setup(void)
{
    // put your setup code here, to run once:
    pinMode(mydht_DHT22_DOUT_PIN_D2, INPUT_PULLUP);
    pinMode(red_LED_PIN, OUTPUT);
    pinMode(blue_LED_PIN, OUTPUT);
    dht.begin();
    Serial.begin(9600);
}

void loop(void)
{
    // put your main code here, to run repeatedly:
    water_temp();
    delay(2000);
}

void water_temp(void)
{
    float temperature = dht.readTemperature();

    // Check if the temperature reading is valid
    if (isnan(temperature)) {
        Serial.println(F("Failed to read from DHT sensor!"));
        return;
    }

    Serial.print(F("Temperature: "));
    Serial.print(temperature);
    Serial.println(F("°C"));

    // Check if temperature is greater than 27 degrees celsius
    if (temperature > 27) {
        Serial.println(F("High temperature"));
        digitalWrite(red_LED_PIN, HIGH);
        digitalWrite(blue_LED_PIN, LOW);
    }
    // Check if temperature is less than 25 degrees celsius
    else if (temperature < 25) {
        Serial.println(F("Low temperature"));
        digitalWrite(red_LED_PIN, LOW);
        digitalWrite(blue_LED_PIN, HIGH);
    }
    else {
        digitalWrite(red_LED_PIN, LOW);
        digitalWrite(blue_LED_PIN, LOW);
    }
}