LockPad IOT

#include WiFiS3.h  // Include the WiFi library for Arduino Uno R4 WiFi
#include WiFiServer.h
#include Wire.h
#include LiquidCrystal_I2C.h
#include Keypad.h
#include NTPClient.h
#include WiFiUdp.h
#include Servo.h

// Replace with your WiFi network credentials
const char ssid[] = "Tenda";
const char password[] = "023153000";
String formValue = "00000";
const char *login_log[100] = {};
int log_count = 0;  // used slots
String nowtime;

int buzzer = 10;
Servo myservo;
// Set up a server on port 80 (HTTP)
WiFiServer server(80);

LiquidCrystal_I2C lcd(0x27, 16, 2);

const byte numRows = 4; // Number of rows on the keypad
const byte numCols = 4; // Number of columns on the keypad

String pass = "00000";
String inpass = "";
bool pass_type = true;

String buffer = "";
const char* lcdtext;
// Keymap defines the key pressed according to the row and columns
char keymap[numRows][numCols] = 
{
{'1', '2', '3', 'A'}, 
{'4', '5', '6', 'B'}, 
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};

// Keypad connections to the Arduino pins
byte rowPins[numRows] = {9, 8, 7, 6}; // Rows 0 to 3
byte colPins[numCols] = {5, 4, 3, 2}; // Columns 0 to 3

// Initializes an instance of the Keypad class
Keypad myKeypad = Keypad(makeKeymap(keymap), rowPins, colPins, numRows, numCols);

void log_add(const char *s) {
if (log_count < 100) {
    login_log[log_count++] = s;
}
}

void refreshLCD(){
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Enter Password:");
lcd.setCursor(0, 1);
if(pass_type == 0){
lcd.print(inpass);
}else{
for(int i = 1;i<=inpass.length();i++){
    lcd.print("*");
    }
}
}

WiFiUDP ntpUDP;

// By default 'pool.ntp.org' is used with 60 seconds update interval and
// no offset
NTPClient timeClient(ntpUDP, "th.pool.ntp.org", 25200);

void success_login(){
tone(buzzer, 1000);
myservo.write(90);
delay(1500);
myservo.write(0);
noTone(buzzer);
}

void setup() {
Serial.begin(9600);
pinMode(buzzer, OUTPUT);
myservo.attach(11);
myservo.write(0);
// Connect to WiFi
Serial.print("Connecting to WiFi...");
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
}
Serial.println("Connected to WiFi!");

// Print IP Address
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());

// Start the server
server.begin();
Serial.println("Server started");

lcd.init();
lcd.init();
lcd.backlight();
lcd.setCursor(0, 0);
lcd.print("A=delete c=reset");
lcd.setCursor(0, 1);
lcd.print("B=view type D=OK");

timeClient.begin();
}

void loop() {

//-------------------server-----------------------

//update clock
timeClient.update();
// Check for incoming client connection
WiFiClient client = server.available();
if (client) {
    Serial.println("New Client connected");
    
    // Read the request
    String request = client.readStringUntil('\r');
    Serial.println(request);
    client.flush();

    // Parse the request
    if (request.indexOf("GET /?input=") >= 0) {
    int inputIndex = request.indexOf("input=") + 6;
    int spaceIndex = request.indexOf(' ', inputIndex);
    formValue = request.substring(inputIndex, spaceIndex);
    formValue.replace("+", " "); // Replace '+' with spaces for readability
    }

    // Send the response back to the client (a simple form)
    client.println("HTTP/1.1 200 OK");
    client.println("Content-Type: text/html");
    client.println("Connection: close");
    client.println();
    client.println("!DOCTYPE HTML>");
    client.println("html>");
    client.println("body background='https://www.it.kmitl.ac.th/~pattarachai/PIC/BG/stone.gif'>");
    client.println("div style=\"margin: auto; width: 50%;\">");
    client.println("h1>LOCKPAT-IOT/h1>");
    
    // If there's a value from the form, display it
    if (formValue != "") {
    client.println("p>Your password: " + formValue + "/p");
    Serial.println(formValue);
    pass = formValue;
    }
    
    // Display a form for the user to submit data
    client.println("form action='/' method='GET'>");
    client.println("Enter new password: input type='text' name='input'br");
    client.println("input type='submit' value='Submit'>");
    client.println("/form>");

    client.println("ul>");

    //If there's a value in log
    if (sizeof(login_log) / sizeof(login_log[0]) > 1){
    for (int i = 1;i < log_count;){
        client.print("li>");
        Serial.println(String(i));
        client.print(login_log[i++]);
        client.print(" : ");
        Serial.println(" : ");
        Serial.println(login_log[i]);
        client.print(login_log[i++]);
        client.println("/li>");
    }
    }

    client.println("/ul>");
    client.println("/div>");
    client.println("/body>");
    client.println("/html>");
    
    // Close the connection
    client.stop();
    Serial.println("Client disconnected");
}

//-------------------Hardware-----------------------

char keypressed = myKeypad.getKey();
if (keypressed != NO_KEY) {
    Serial.println(keypressed);

    // Control LEDs based on key presses
    switch (keypressed) {
    case '1':
        inpass = inpass + "1";
        refreshLCD();
        break;
    case '2':
        inpass = inpass + "2";
        refreshLCD();
        break;
    case '3':
        inpass = inpass + "3";
        refreshLCD();
        break;
    case '4':
        inpass = inpass + "4";
        refreshLCD();
        break;
    case '5':
        inpass = inpass + "5";
        refreshLCD();
        break;
    case '6':
        inpass = inpass + "6";
        refreshLCD();
        break;
    case '7':
        inpass = inpass + "7";
        refreshLCD();
        break;
    case '8':
        inpass = inpass + "8";
        refreshLCD();
        break;
    case '9':
        inpass = inpass + "9";
        refreshLCD();
        break;
    case '0':
        inpass = inpass + "0";
        refreshLCD();
        break;
    case '*':
        inpass = inpass + "*";
        refreshLCD();
        break;
    case '#':
        inpass = inpass + "#";
        refreshLCD();
        break;
    case 'A':
        if (inpass.length() >= 1) {
        inpass.remove(inpass.length() - 1);
        }
        refreshLCD();
        break;
    case 'B':
        pass_type = !pass_type;
        refreshLCD();
        break;
    case 'C':
        inpass = "";
        refreshLCD();
        break;
    case 'D':
        nowtime = timeClient.getFormattedTime();
        if (inpass.equals("")) {
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("Welcome!!!");
        lcd.setCursor(0, 1);
        lcd.print("now ");
        lcd.print(nowtime);
        delay(1500);
        refreshLCD();
        } else {
        lcd.clear();
        //log_add(nowtime.c_str());
        if (pass.compareTo(inpass) == 0) {
            log_add("Success");
            lcd.print("Success");
            success_login();
        } else {
            log_add("fail!");
            lcd.print("fail!");
            delay(1500);
        }
        for (int i = 0;ilog_count;i++){Serial.println(login_log[i]);}
        inpass = "";
        refreshLCD();
        }
        break;
    default:
        break;
    }
}
}