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	- Project: Temperature Monitor
	- Source Code NOT compiled for: Arduino Nano ESP32
	- Source Code created on: 2024-10-03 10:37:09

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* Initialize internal Bluetooth device as master, */
	/* receive BLE data, and show it on a 16x2 LCD using */
	/* LiquidCrystal library for Arduino. */
/****** SYSTEM REQUIREMENT 2 *****/
	/* read temperature and send it via bluetooth. */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include 
#include 	//https://github.com/arduino-libraries/LiquidCrystal
#include 	//https://github.com/matmunk/DS18B20
#include  // Include Bluetooth library

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs();
void readTemperatureAndSend(); // Function to read temperature and send via Bluetooth

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t temp_DS18B20_DQ_PIN_D8 = 8;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t display_LCD1602_RS_PIN_D2 = 2;
const uint8_t display_LCD1602_E_PIN_D3 = 3;
const uint8_t display_LCD1602_D4_PIN_D4 = 4;
const uint8_t display_LCD1602_D5_PIN_D5 = 5;
const uint8_t display_LCD1602_D6_PIN_D6 = 6;
const uint8_t display_LCD1602_D7_PIN_D7 = 7;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
// LCD instance
LiquidCrystal lcd(display_LCD1602_RS_PIN_D2, display_LCD1602_E_PIN_D3, display_LCD1602_D4_PIN_D4, display_LCD1602_D5_PIN_D5, display_LCD1602_D6_PIN_D6, display_LCD1602_D7_PIN_D7);
// DS18B20 instance
DS18B20 tempSensor(temp_DS18B20_DQ_PIN_D8);
// Bluetooth instance
BluetoothSerial SerialBT;

void setup(void)
{
	// Initialize the LCD
	lcd.begin(16, 2);
	lcd.print("Initializing...");

	// Initialize Bluetooth
	SerialBT.begin("ESP32_Bluetooth"); // Bluetooth device name
	lcd.setCursor(0, 1);
	lcd.print("Bluetooth Ready");

	pinMode(temp_DS18B20_DQ_PIN_D8, INPUT);
	pinMode(display_LCD1602_RS_PIN_D2, OUTPUT);
	pinMode(display_LCD1602_E_PIN_D3, OUTPUT);
	pinMode(display_LCD1602_D4_PIN_D4, OUTPUT);
	pinMode(display_LCD1602_D5_PIN_D5, OUTPUT);
	pinMode(display_LCD1602_D6_PIN_D6, OUTPUT);
	pinMode(display_LCD1602_D7_PIN_D7, OUTPUT);
}

void loop(void)
{
	// Read temperature and send it via Bluetooth
	readTemperatureAndSend(); 

	// Refresh output data
	updateOutputs(); 
}

void updateOutputs()
{
	// Update LCD display with temperature data
	float temperature = tempSensor.getTempC(); // Get temperature in Celsius
	lcd.clear();
	lcd.print("Temp: ");
	lcd.print(temperature);
	lcd.print(" C");
}

void readTemperatureAndSend()
{
	float temperature = tempSensor.getTempC(); // Get temperature in Celsius
	SerialBT.println(temperature); // Send temperature via Bluetooth
}

/* END CODE */