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	- Project: WiFi Lock
	- Source Code NOT compiled for: Arduino Nano ESP32
	- Source Code created on: 2024-10-06 15:43:45

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* The servo motor installed in the door will lock or */
	/* unlock based on the correct PIN code received by */
	/* the button. If the door is unlocked and the PIN is */
	/* correct, it will lock. If the door is locked and */
	/* the PIN is correct, it will unlock. */
/****** SYSTEM REQUIREMENT 2 *****/
	/* The webserver provides a web page about lock or */
	/* unlock state of the door. */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include 	//https://github.com/deneyapkart/deneyap-servo-arduino-library
#include 	//https://github.com/Chris--A/Keypad
#include 	//https://github.com/evert-arias/EasyButton
#include 	//https://github.com/pololu/xyzrobot-servo-arduino
#include 	//https://github.com/dniklaus/arduino-display-lcdkeypad
#include  // Include WiFi library for web server
#include  // Include WebServer library

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs();
void handleRoot(); // Function to handle root URL

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t keypad_Keypad3x4_R1_PIN_D4		= 4;
const uint8_t keypad_Keypad3x4_R2_PIN_D5		= 5;
const uint8_t keypad_Keypad3x4_R3_PIN_D6		= 6;
const uint8_t keypad_Keypad3x4_R4_PIN_D7		= 7;
const uint8_t pinButton_PushButton_PIN_D2		= 2;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t keypad_Keypad3x4_C1_PIN_D8		= 8;
const uint8_t keypad_Keypad3x4_C2_PIN_D9		= 9;
const uint8_t keypad_Keypad3x4_C3_PIN_D10		= 10;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
bool	keypad_Keypad3x4_C1_PIN_D8_rawData		= 0;
bool	keypad_Keypad3x4_C2_PIN_D9_rawData		= 0;
bool	keypad_Keypad3x4_C3_PIN_D10_rawData		= 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
float	keypad_Keypad3x4_C1_PIN_D8_phyData		= 0.0;
float	keypad_Keypad3x4_C2_PIN_D9_phyData		= 0.0;
float	keypad_Keypad3x4_C3_PIN_D10_phyData		= 0.0;

const uint8_t KEYPAD3X4_ROWS = 4; //four rows
const uint8_t KEYPAD3X4_COLS = 3; //three columns
char Keys_Keypad3x4[KEYPAD3X4_ROWS][KEYPAD3X4_COLS] = {
	{'1','2','3'},
	{'4','5','6'},
	{'7','8','9'},
	{'*','0','#'},
};

// Servo object for locking/unlocking the door
Deneyap_Servo doorServo;

// Web server object
WebServer server(80);

// PIN code for unlocking the door
const String correctPIN = "1234"; // Set your desired PIN code
String enteredPIN = ""; // Store entered PIN

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/

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

	pinMode(keypad_Keypad3x4_R1_PIN_D4,	INPUT_PULLUP);
	pinMode(keypad_Keypad3x4_R2_PIN_D5,	INPUT_PULLUP);
	pinMode(keypad_Keypad3x4_R3_PIN_D6,	INPUT_PULLUP);
	pinMode(keypad_Keypad3x4_R4_PIN_D7,	INPUT_PULLUP);
	pinMode(pinButton_PushButton_PIN_D2,	INPUT_PULLUP);

	pinMode(keypad_Keypad3x4_C1_PIN_D8,	 OUTPUT);
	pinMode(keypad_Keypad3x4_C2_PIN_D9,	 OUTPUT);
	pinMode(keypad_Keypad3x4_C3_PIN_D10,	 OUTPUT);

	// Initialize the servo
	doorServo.attach(11); // Attach the servo to pin 11 (change as needed)
	doorServo.write(0); // Start with the door locked

	// Initialize WiFi
	WiFi.begin("yourSSID", "yourPASSWORD"); // Replace with your WiFi credentials
	while (WiFi.status() != WL_CONNECTED) {
		delay(1000);
	}
	server.on("/", handleRoot); // Handle root URL
	server.begin(); // Start the server
}

void loop(void)
{
	// put your main code here, to run repeatedly:
	updateOutputs(); // Refresh output data
	server.handleClient(); // Handle client requests

	// Check for key presses
	char key = keypad.getKey();
	if (key) {
		if (key == '#') { // If '#' is pressed, check the entered PIN
			if (enteredPIN == correctPIN) {
				// Toggle the lock state
				if (doorServo.read() == 0) {
					doorServo.write(90); // Unlock the door
				} else {
					doorServo.write(0); // Lock the door
				}
			}
			enteredPIN = ""; // Reset entered PIN after checking
		} else {
			enteredPIN += key; // Append the pressed key to the entered PIN
		}
	}
}

void updateOutputs()
{
	digitalWrite(keypad_Keypad3x4_C1_PIN_D8, keypad_Keypad3x4_C1_PIN_D8_rawData);
	digitalWrite(keypad_Keypad3x4_C2_PIN_D9, keypad_Keypad3x4_C2_PIN_D9_rawData);
	digitalWrite(keypad_Keypad3x4_C3_PIN_D10, keypad_Keypad3x4_C3_PIN_D10_rawData);
}

void handleRoot() {
	String state = (doorServo.read() == 0) ? "Locked" : "Unlocked"; // Check lock state
	String message = "
Door is " + state + "
";
	server.send(200, "text/html", message); // Send the HTML response
}

/* END CODE */