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	- Project: **Temperature Sensors**
	- Source Code NOT compiled for: Arduino Nano ESP32
	- Source Code created on: 2024-10-03 13:48:31

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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               // https://github.com/adafruit/DHT-sensor-library

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t temp_DS18B20_DQ_PIN_D8 = 8;
const uint8_t temperatureSensor_DHT22_DOUT_PIN_D9 = 9;

/***** 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 OUTPUT RAW VARIABLES *****/
bool display_LCD1602_RS_PIN_D2_rawData = 0;
bool display_LCD1602_E_PIN_D3_rawData = 0;
bool display_LCD1602_D4_PIN_D4_rawData = 0;
bool display_LCD1602_D5_PIN_D5_rawData = 0;
bool display_LCD1602_D6_PIN_D6_rawData = 0;
bool display_LCD1602_D7_PIN_D7_rawData = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
float display_LCD1602_RS_PIN_D2_phyData = 0.0;
float display_LCD1602_E_PIN_D3_phyData = 0.0;
float display_LCD1602_D4_PIN_D4_phyData = 0.0;
float display_LCD1602_D5_PIN_D5_phyData = 0.0;
float display_LCD1602_D6_PIN_D6_phyData = 0.0;
float display_LCD1602_D7_PIN_D7_phyData = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES *****/
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);
DHT dht(temperatureSensor_DHT22_DOUT_PIN_D9, DHT22);
DS18B20 tempSensor(temp_DS18B20_DQ_PIN_D8);

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

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

    // Initialize the DS18B20 sensor
    tempSensor.Update();

    // Set pin modes
    pinMode(temp_DS18B20_DQ_PIN_D8, INPUT);
    pinMode(temperatureSensor_DHT22_DOUT_PIN_D9, INPUT_PULLUP);
    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 via Bluetooth
    readTemperatureAndSend();

    // Refresh output data
    updateOutputs();
}

void readTemperatureAndSend()
{
    // Read temperature from DHT sensor
    float temperature = dht.readTemperature();
    if (isnan(temperature)) {
        lcd.print("DHT Error");
    } else {
        lcd.print("Temp: ");
        lcd.print(temperature);
        lcd.print(" C");
        // Here you can add code to send temperature via Bluetooth
    }

    // Read temperature from DS18B20 sensor
    float dsTemperature = tempSensor.GetTemperature();
    if (dsTemperature != NAN) {
        lcd.print("DS Temp: ");
        lcd.print(dsTemperature);
        lcd.print(" C");
        // Here you can add code to send temperature via Bluetooth
    }
}

void updateOutputs()
{
    digitalWrite(display_LCD1602_RS_PIN_D2, display_LCD1602_RS_PIN_D2_rawData);
    digitalWrite(display_LCD1602_E_PIN_D3, display_LCD1602_E_PIN_D3_rawData);
    digitalWrite(display_LCD1602_D4_PIN_D4, display_LCD1602_D4_PIN_D4_rawData);
    digitalWrite(display_LCD1602_D5_PIN_D5, display_LCD1602_D5_PIN_D5_rawData);
    digitalWrite(display_LCD1602_D6_PIN_D6, display_LCD1602_D6_PIN_D6_rawData);
    digitalWrite(display_LCD1602_D7_PIN_D7, display_LCD1602_D7_PIN_D7_rawData);
}

/* END CODE */