**Servo Control** rev_08

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    - Project: **Servo Control**
    - Source Code NOT compiled for: Arduino Nano ESP32
    - Source Code created on: 2025-02-21 00:22:45

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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 *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <EasyButton.h> //https://github.com/evert-arias/EasyButton
#include <Deneyap_Servo.h>  //https://github.com/deneyapkart/deneyap-servo-arduino-library

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t codeButton_PushButton_PIN_D9      = 9;

/***** DEFINITION OF PWM OUTPUT PINS *****/
const uint8_t servo_Servomotor_PWMSignal_PIN_D2     = 2;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
uint8_t servo_Servomotor_PWMSignal_PIN_D2_rawData       = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
float   servo_Servomotor_PWMSignal_PIN_D2_phyData       = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
// Create an instance of EasyButton for the button
EasyButton button(codeButton_PushButton_PIN_D9);

// Create an instance of Servo for the servo motor
Servo servoMotor;

/***** STATE VARIABLES *****/
bool doorLocked = true; // Initial state of the door is locked

void setup(void)
{
    // put your setup code here, to run once:
    pinMode(codeButton_PushButton_PIN_D9, INPUT_PULLUP);
    pinMode(servo_Servomotor_PWMSignal_PIN_D2, OUTPUT);

    // Initialize the button
    button.begin();
    // Attach the servo to the PWM pin
    servoMotor.attach(servo_Servomotor_PWMSignal_PIN_D2);
}

void loop(void)
{
    // put your main code here, to run repeatedly:
    button.update(); // Update button state
    checkButtonPress(); // Check if the button is pressed
    updateOutputs(); // Refresh output data
}

void checkButtonPress()
{
    if (button.isPressed()) {
        lockUnlockDoor(); // Check and toggle the lock state
    }
}

void lockUnlockDoor()
{
    // Toggle the lock state
    doorLocked = !doorLocked;

    // Set the servo position based on the lock state
    if (doorLocked) {
        servo_Servomotor_PWMSignal_PIN_D2_rawData = SERVOMIN; // Lock the door
    } else {
        servo_Servomotor_PWMSignal_PIN_D2_rawData = SERVOMAX; // Unlock the door
    }
}

void updateOutputs()
{
    // Write the PWM signal to the servo
    servoMotor.write(servo_Servomotor_PWMSignal_PIN_D2_rawData);
}

/* END CODE */