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	- Project: **Sensor Display**
	- Source Code NOT compiled for: Arduino Nano ESP32
	- Source Code created on: 2024-10-03 14:45:25

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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 <Wire.h>
#include <LiquidCrystal.h> // https://github.com/arduino-libraries/LiquidCrystal
#include <DHT.h> // https://github.com/adafruit/DHT-sensor-library

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
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;

// Create an instance of the LiquidCrystal library
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);

// Create an instance of the DHT sensor
DHT dht(temperatureSensor_DHT22_DOUT_PIN_D9, DHT22); // Assuming DHT22 sensor

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

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

    // Initialize Bluetooth (Assuming you have a Bluetooth library for this)
    // Bluetooth.begin(); // Uncomment and replace with actual Bluetooth initialization code
}

void loop(void)
{
    // Read temperature and humidity
    float temperature = dht.readTemperature(); // Read temperature in Celsius
    float humidity = dht.readHumidity(); // Read humidity

    // Check if any reads failed and exit early (to try again).
    if (isnan(temperature) || isnan(humidity)) {
        lcd.clear();
        lcd.print("Failed to read!");
        return;
    }

    // Display temperature and humidity on the LCD
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temp: ");
    lcd.print(temperature);
    lcd.print(" C");
    lcd.setCursor(0, 1);
    lcd.print("Humidity: ");
    lcd.print(humidity);
    lcd.print(" %");

    // Send temperature data via Bluetooth
    // Bluetooth.print("Temperature: "); // Uncomment and replace with actual Bluetooth sending code
    // Bluetooth.print(temperature); // Uncomment and replace with actual Bluetooth sending code
    // Bluetooth.print(" C"); // Uncomment and replace with actual Bluetooth sending code

    delay(2000); // Wait for 2 seconds before the next loop
}

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 */