Smart Lock rev_93

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    - Project: Smart Lock
    - Source Code NOT compiled for: Arduino Nano ESP32
    - Source Code created on: 2024-10-06 10:56:42

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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 <Deneyap_Servo.h>  //https://github.com/deneyapkart/deneyap-servo-arduino-library
#include <Keypad.h> //https://github.com/Chris--A/Keypad
#include <EasyButton.h> //https://github.com/evert-arias/EasyButton
#include <LcdKeypad.h>  //https://github.com/dniklaus/arduino-display-lcdkeypad
#include <XYZrobotServo.h>  //https://github.com/pololu/xyzrobot-servo-arduino
#include <WiFi.h> // Include WiFi library for web server

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs();
void handleClient(); // Function to handle web client requests
char getKey(); // Function to get key from keypad

/***** 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*****/
// Instantiate the servo object
Deneyap_Servo myServo;

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

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

// Web server on port 80
WiFiServer server(80);

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);

    // Attach the servo to a pin
    myServo.attach(11); // Assuming servo is connected to pin 11

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

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

    // Check keypad input
    char key = getKey(); // Function to get key from keypad
    if (key) {
        enteredPIN += key; // Append the pressed key to enteredPIN
        if (key == '#') { // Check if '#' is pressed to submit the PIN
            if (enteredPIN.substring(0, enteredPIN.length() - 1) == correctPIN) {
                // Toggle lock state
                doorLocked = !doorLocked;
                myServo.write(doorLocked ? 0 : 90); // Lock or unlock the servo
            }
            enteredPIN = ""; // Reset 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 handleClient() {
    WiFiClient client = server.available(); // Check for incoming clients
    if (client) {
        String currentLine = ""; // String to hold incoming data
        while (client.connected()) {
            if (client.available()) {
                char c = client.read(); // Read a byte
                if (c == '\n') {
                    // If the current line is blank, you got a GET request
                    if (currentLine.length() == 0) {
                        // Send HTTP headers
                        client.println("HTTP/1.1 200 OK");
                        client.println("Content-type:text/html");
                        client.println();
                        // Send the HTML page
                        client.println("<html><body>");
                        client.println("<h1>Door Lock Status</h1>");
                        client.println("<p>The door is currently " + String(doorLocked ? "locked" : "unlocked") + ".</p>");
                        client.println("</body></html>");
                        client.println();
                        break;
                    } else {
                        currentLine = ""; // Clear the current line
                    }
                } else if (c != '\r') {
                    currentLine += c; // Add to the current line
                }
            }
        }
        client.stop(); // Close the connection
    }
}

/* END CODE */