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	- Project: Temperature Control
	- Source Code compiled for: Arduino Uno
	- Source Code created on: 2024-04-20 14:54:25

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* Measure temperature using DS18B20 sensor every */
	/* 10s. Display temperature on serial monitor. */
	/* Control heater based on temperature. Turn off */
	/* heater if temperature >= 37°C. Turn on heater if */
	/* temperature < 37°C. */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include <OneWire.h> // https://github.com/PaulStoffregen/OneWire
#include <DallasTemperature.h> // https://github.com/milesburton/Arduino-Temperature-Control-Library

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t Temp_sensor_DS18B20_DQ_PIN_D2 = 2;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t Heater_LED_PIN_D3 = 3;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool Heater_LED_PIN_D3_rawData = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float Heater_LED_PIN_D3_phyData = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
OneWire oneWire(Temp_sensor_DS18B20_DQ_PIN_D2); // Create an instance of the OneWire class
DallasTemperature sensors(&oneWire); // Pass the OneWire instance to the DallasTemperature library

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

  pinMode(Temp_sensor_DS18B20_DQ_PIN_D2, INPUT);

  pinMode(Heater_LED_PIN_D3, OUTPUT);

  Serial.begin(9600);

  sensors.begin(); // Initialize the DallasTemperature library
}

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

  sensors.requestTemperatures(); // Send the command to get temperatures
  float temperatureC = sensors.getTempCByIndex(0); // Read the temperature in Celsius

  // Display temperature on serial monitor
  Serial.print("Temperature: ");
  Serial.print(temperatureC);
  Serial.println("°C");

  // Control heater based on temperature
  if (temperatureC >= 37.0)
  {
    Heater_LED_PIN_D3_rawData = LOW; // Turn off heater
  }
  else
  {
    Heater_LED_PIN_D3_rawData = HIGH; // Turn on heater
  }

  updateOutputs(); // Refresh output data

  delay(10000); // Wait for 10 seconds before measuring again
}

void updateOutputs()
{
  digitalWrite(Heater_LED_PIN_D3, Heater_LED_PIN_D3_rawData);
}