Keypad Lock rev_95

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    - Project: Keypad Lock
    - Source Code NOT compiled for: Arduino Nano ESP32
    - Source Code created on: 2024-10-06 11:07:18

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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

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs();
void handleWebRequests();
void unlockDoor();
void lockDoor();
bool checkPIN(char* enteredPIN);

/***** 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
Deneyap_Servo servoMotor;

// Web server state
bool doorLocked = true; // Initial state is locked
const char correctPIN[] = "1234"; // Example correct 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);

    // Attach the servo to a pin
    servoMotor.attach(3); // Assuming the servo is connected to pin 3
    servoMotor.write(0); // Start in locked position

    // Initialize web server
    // (Web server setup code would go here)
}

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

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 handleWebRequests()
{
    // Handle web requests to check lock state
    // (Web server request handling code would go here)
    // Example: If a PIN is entered, check it
    char enteredPIN[5]; // Buffer for entered PIN
    if (/* condition to check if a PIN is entered */) {
        if (checkPIN(enteredPIN)) {
            if (doorLocked) {
                unlockDoor();
            } else {
                lockDoor();
            }
        }
    }
}

bool checkPIN(char* enteredPIN) {
    // Compare entered PIN with the correct PIN
    return strcmp(enteredPIN, correctPIN) == 0;
}

void unlockDoor()
{
    if (doorLocked) {
        servoMotor.write(90); // Unlock position
        doorLocked = false; // Update state
    }
}

void lockDoor()
{
    if (!doorLocked) {
        servoMotor.write(0); // Lock position
        doorLocked = true; // Update state
    }
}

/* END CODE */