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	- Project: **Servo Control**
	- Source Code NOT compiled for: Arduino Nano ESP32
	- Source Code created on: 2024-10-06 17:43:34

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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  // Include WiFi library for web server

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs();
void handleKeypadInput(char key);
void startWebServer();
void handleClient();

/***** 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','#'},
};

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
Servo doorServo; // Create a Servo object for the door
Keypad keypad = Keypad(makeKeymap(Keys_Keypad3x4), keypad_Keypad3x4_R1_PIN_D4, keypad_Keypad3x4_R2_PIN_D5, keypad_Keypad3x4_R3_PIN_D6, keypad_Keypad3x4_R4_PIN_D7, KEYPAD3X4_ROWS, KEYPAD3X4_COLS);

// WiFi credentials
const char* ssid = "your_SSID"; // Replace with your network SSID
const char* password = "your_PASSWORD"; // Replace with your network password

WiFiServer server(80); // Create a server that listens on port 80

bool doorLocked = true; // Initial state of the door
const String correctPIN = "1234"; // Define the correct PIN code
String enteredPIN = ""; // Store the entered PIN

void setup(void)
{
	// put your setup code here, to run once:
	pinMode(keypad_Keypad3x4_C1_PIN_D8, OUTPUT);
	pinMode(keypad_Keypad3x4_C2_PIN_D9, OUTPUT);
	pinMode(keypad_Keypad3x4_C3_PIN_D10, OUTPUT);

	doorServo.attach(3); // Attach the servo on pin 3

	// Initialize WiFi
	WiFi.begin(ssid, password);
	while (WiFi.status() != WL_CONNECTED) {
		delay(1000);
	}
	startWebServer(); // Start the web server
}

void loop(void)
{
	// put your main code here, to run repeatedly:
	char key = keypad.getKey();
	if (key) {
		handleKeypadInput(key);
	}
	handleClient(); // Handle incoming client requests
	updateOutputs(); // Refresh output data
}

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 handleKeypadInput(char key)
{
	if (key == '#') { // If '#' is pressed, check the entered PIN
		if (enteredPIN == correctPIN) {
			doorLocked = !doorLocked; // Toggle the lock state
			doorServo.write(doorLocked ? 0 : 90); // Move servo to lock/unlock position
		}
		enteredPIN = ""; // Clear entered PIN
	} else if (key == '*') { // Clear the entered PIN
		enteredPIN = "";
	} else {
		enteredPIN += key; // Append the key to the entered PIN
	}
}

void startWebServer() {
	server.begin(); // Start the server
}

void handleClient() {
	WiFiClient client = server.available(); // Check if a client has connected
	if (client) {
		String currentLine = ""; // Make a String to hold incoming data
		while (client.connected()) {
			if (client.available()) {
				char c = client.read(); // Read a byte
				currentLine += c; // Add it to the end of the currentLine
				if (c == '\n') { // If the line is complete
					client.println("HTTP/1.1 200 OK"); // Send response
					client.println("Content-type:text/html");
					client.println();
					client.println("");
					client.println("
Door is " + String(doorLocked ? "Locked" : "Unlocked") + "
");
					client.println("");
					client.println();
					break;
				}
			}
		}
		client.stop(); // Close the connection
	}
}

/* END CODE */