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	- Project: Servo Lock
	- Source Code NOT compiled for: Arduino Nano ESP32
	- Source Code created on: 2024-10-07 22:43:22

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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 *****/


/********* User code review feedback **********
#### Feedback 1 ####
- create a const where to allocate PIN and check this PIN on check
Keypad.
********* User code review feedback **********/

/* START CODE */

/****** 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 "ServoControl.h"   // Include the ServoControl header
#include "KeypadHandler.h"   // Include the KeypadHandler header

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

/***** 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;

/***** 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 PIN CODE *****/
const String CORRECT_PIN = "1234"; // Define the correct PIN code

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
// Create instances for servo control and keypad handler
ServoControl doorServo(9); // Attach the servo to pin 9
KeypadHandler keypad(Keys_Keypad3x4, (byte[]){keypad_Keypad3x4_R1_PIN_D4, keypad_Keypad3x4_R2_PIN_D5, keypad_Keypad3x4_R3_PIN_D6, keypad_Keypad3x4_R4_PIN_D7}, (byte[]){keypad_Keypad3x4_C1_PIN_D8, keypad_Keypad3x4_C2_PIN_D9, keypad_Keypad3x4_C3_PIN_D10});

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);
}

void loop(void)
{
    // put your main code here, to run repeatedly:
    updateOutputs(); // Refresh output data
    checkKeypad();   // Check for keypad input
}

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 checkKeypad() {
    char key = keypad.getKey();
    static String inputPIN = ""; // Store the input PIN

    if (key) {
        // Append the pressed key to the input PIN
        inputPIN += key;

        // Check if the input PIN is correct
        if (inputPIN.length() == CORRECT_PIN.length()) {
            if (inputPIN == CORRECT_PIN) {
                if (doorServo.isLocked()) {
                    doorServo.unlock(); // Unlock the door
                } else {
                    doorServo.lock(); // Lock the door
                }
            }
            inputPIN = ""; // Reset input after checking
        }
    }
}

/* END CODE */