added esp32 code
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Sam
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rfid/websocketTest
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/*********
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Rui Santos
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Complete project details at https://RandomNerdTutorials.com/esp32-websocket-server-arduino/
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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*********/
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//Libraries
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#include <SPI.h> //https://www.arduino.cc/en/reference/SPI
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#include <MFRC522.h> //https://github.com/miguelbalboa/rfid
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//Constants
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#define SS_PIN 5
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#define RST_PIN 0
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//Parameters
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const int ipaddress[4] = { 103, 97, 67, 25 };
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//Variables
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byte nuidPICC[4] = { 0, 0, 0, 0 };
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MFRC522::MIFARE_Key key;
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MFRC522 rfid = MFRC522(SS_PIN, RST_PIN);
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// Import required libraries
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#include <WiFi.h>
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#include <AsyncTCP.h>
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#include <ESPAsyncWebServer.h>
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// Replace with your network credentials
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const char *ssid = "Orcon-Wireless";
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const char *password = "140313502555";
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bool ledState = 0;
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const int ledPin = 2;
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// Create AsyncWebServer object on port 80
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AsyncWebServer server(80);
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AsyncWebSocket ws("/ws");
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const char index_html[] PROGMEM = R"rawliteral(
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<!DOCTYPE HTML><html>
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<head>
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<title>ESP Web Server</title>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link rel="icon" href="data:,">
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<style>
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html {
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font-family: Arial, Helvetica, sans-serif;
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text-align: center;
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}
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h1 {
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font-size: 1.8rem;
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color: white;
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}
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h2{
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font-size: 1.5rem;
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font-weight: bold;
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color: #143642;
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}
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.topnav {
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overflow: hidden;
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background-color: #143642;
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}
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body {
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margin: 0;
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}
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.content {
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padding: 30px;
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max-width: 600px;
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margin: 0 auto;
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}
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.card {
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background-color: #F8F7F9;;
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box-shadow: 2px 2px 12px 1px rgba(140,140,140,.5);
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padding-top:10px;
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padding-bottom:20px;
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}
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.button {
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padding: 15px 50px;
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font-size: 24px;
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text-align: center;
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outline: none;
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color: #fff;
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background-color: #0f8b8d;
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border: none;
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border-radius: 5px;
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-webkit-touch-callout: none;
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-webkit-user-select: none;
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-khtml-user-select: none;
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-moz-user-select: none;
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-ms-user-select: none;
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user-select: none;
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-webkit-tap-highlight-color: rgba(0,0,0,0);
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}
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/*.button:hover {background-color: #0f8b8d}*/
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.button:active {
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background-color: #0f8b8d;
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box-shadow: 2 2px #CDCDCD;
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transform: translateY(2px);
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}
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.state {
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font-size: 1.5rem;
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color:#8c8c8c;
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font-weight: bold;
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}
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</style>
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<title>ESP Web Server</title>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link rel="icon" href="data:,">
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</head>
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<body>
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<div class="topnav">
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<h1>ESP WebSocket Server</h1>
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</div>
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<div class="content">
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<div class="card">
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<h2>Output - GPIO 2</h2>
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<p class="state">state: <span id="state">%STATE%</span></p>
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<p><button id="button" class="button">Toggle</button></p>
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</div>
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</div>
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<script>
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var gateway = `ws://${window.location.hostname}/ws`;
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var websocket;
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window.addEventListener('load', onLoad);
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function initWebSocket() {
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console.log('Trying to open a WebSocket connection...');
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websocket = new WebSocket(gateway);
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websocket.onopen = onOpen;
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websocket.onclose = onClose;
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websocket.onmessage = onMessage; // <-- add this line
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}
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function onOpen(event) {
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console.log('Connection opened');
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}
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function onClose(event) {
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console.log('Connection closed');
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setTimeout(initWebSocket, 2000);
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}
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function onMessage(event) {
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console.log(event.data)
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console.log("--")
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console.log(consistentRandomNumber(42, 100))
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var state;
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if (event.data == "1"){
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state = "ON";
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}
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else{
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state = "OFF";
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}
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document.getElementById('state').innerHTML = state;
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}
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function consistentRandomNumber(inputNumber, max) {
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const randomNumber = seededRandom(inputNumber);
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return Math.floor(randomNumber * max) + 1;
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}
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function seededRandom(seed) {
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seed = (seed * 16807) % 2147483647;
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return (seed - 1) / 2147483646;
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}
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function onLoad(event) {
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initWebSocket();
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initButton();
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}
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function initButton() {
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document.getElementById('button').addEventListener('click', toggle);
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}
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function toggle(){
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websocket.send('toggle');
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}
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</script>
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</body>
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</html>
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)rawliteral";
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void notifyClients() {
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ws.textAll(String(ledState));
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}
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void handleWebSocketMessage(void *arg, uint8_t *data, size_t len) {
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AwsFrameInfo *info = (AwsFrameInfo *)arg;
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if (info->final && info->index == 0 && info->len == len && info->opcode == WS_TEXT) {
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data[len] = 0;
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if (strcmp((char *)data, "toggle") == 0) {
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ledState = !ledState;
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notifyClients();
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}
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}
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}
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void onEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventType type,
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void *arg, uint8_t *data, size_t len) {
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switch (type) {
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case WS_EVT_CONNECT:
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Serial.printf("WebSocket client #%u connected from %s\n", client->id(), client->remoteIP().toString().c_str());
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break;
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case WS_EVT_DISCONNECT:
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Serial.printf("WebSocket client #%u disconnected\n", client->id());
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break;
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case WS_EVT_DATA:
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handleWebSocketMessage(arg, data, len);
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break;
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case WS_EVT_PONG:
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case WS_EVT_ERROR:
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break;
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}
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}
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void initWebSocket() {
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ws.onEvent(onEvent);
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server.addHandler(&ws);
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}
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String processor(const String &var) {
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Serial.println(var);
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if (var == "STATE") {
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if (ledState) {
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return "ON";
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} else {
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return "OFF";
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}
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}
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return String();
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}
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void setup() {
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// Serial port for debugging purposes
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Serial.begin(115200);
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pinMode(ledPin, OUTPUT);
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digitalWrite(ledPin, LOW);
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// Connect to Wi-Fi
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(1000);
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Serial.println("Connecting to WiFi..");
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}
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// Print ESP Local IP Address
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Serial.println(WiFi.localIP());
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initWebSocket();
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// Route for root / web page
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server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
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request->send_P(200, "text/html", index_html, processor);
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});
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// Start server
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server.begin();
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//Init Serial USB
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Serial.begin(115200);
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Serial.println(F("Initialize System"));
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//init rfid D8,D5,D6,D7
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SPI.begin();
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rfid.PCD_Init();
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Serial.print(F("Reader :"));
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rfid.PCD_DumpVersionToSerial();
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}
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void loop() {
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ws.cleanupClients();
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digitalWrite(ledPin, ledState);
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readRFID();
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}
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void readRFID(void) { /* function readRFID */
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////Read RFID card
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for (byte i = 0; i < 6; i++) {
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key.keyByte[i] = 0xFF;
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}
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// Look for new 1 cards
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if (!rfid.PICC_IsNewCardPresent())
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return;
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// Verify if the NUID has been readed
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if (!rfid.PICC_ReadCardSerial())
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return;
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// Store NUID into nuidPICC array
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for (byte i = 0; i < 4; i++) {
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nuidPICC[i] = rfid.uid.uidByte[i];
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}
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Serial.print(F("RFID In dec: "));
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printDec(rfid.uid.uidByte, rfid.uid.size);
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// printHex(rfid.uid.uidByte, rfid.uid.size);
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Serial.println();
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// Halt PICC
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rfid.PICC_HaltA();
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// Stop encryption on PCD
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rfid.PCD_StopCrypto1();
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}
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/**
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Helper routine to dump a byte array as hex values to Serial.
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*/
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void printHex(byte *buffer, byte bufferSize) {
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for (byte i = 0; i < bufferSize; i++) {
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Serial.print(buffer[i] < 0x10 ? " 0" : " ");
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Serial.print(buffer[i], HEX);
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}
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// ws.textAll(str);
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}
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/**
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Helper routine to dump a byte array as dec values to Serial.
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*/
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void printDec(byte *buffer, byte bufferSize) {
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for (byte i = 0; i < bufferSize; i++) {
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Serial.print(buffer[i] < 0x10 ? " 0" : " ");
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Serial.print(buffer[i], DEC);
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}
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String str = "";
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str += nuidPICC[0];
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str += nuidPICC[1];
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str += nuidPICC[2];
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str += nuidPICC[3];
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Serial.println();
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Serial.print(str);
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Serial.println();
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ws.textAll(str);
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}
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