/********* * Halloween Cady Mortar Launch Sign Code * Made only minor changes to Rui Santos' code * Used ping 23 insted of pin 26 and removed in 27. * Changed the web page text * https://hackaday.io/project/175206-halloween-candy-mortar */ /********* * Credit: Rui Santos Complete project details at https://randomnerdtutorials.com/esp32-web-server-arduino-ide/ *********/ // Load Wi-Fi library #include // Replace with your network credentials const char* ssid = "YOUR SSID HERE"; const char* password = "YOUR WIFI PASSWORD HERE"; // Set web server port number to 80 WiFiServer server(80); // Variable to store the HTTP request String header; // Auxiliar variables to store the current output state String output23State = "off"; String output27State = "off"; // Assign output variables to GPIO pins const int output23 = 23; const int output27 = 27; // Current time unsigned long currentTime = millis(); // Previous time unsigned long previousTime = 0; // Define timeout time in milliseconds (example: 2000ms = 2s) const long timeoutTime = 2000; void setup() { Serial.begin(115200); // Initialize the output variables as outputs pinMode(output23, OUTPUT); // Set outputs to LOW digitalWrite(output23, LOW); // Connect to Wi-Fi network with SSID and password Serial.print("Connecting to "); Serial.println(ssid); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } // Print local IP address and start web server Serial.println(""); Serial.println("WiFi connected."); Serial.println("IP address: "); Serial.println(WiFi.localIP()); server.begin(); } void loop(){ WiFiClient client = server.available(); // Listen for incoming clients if (client) { // If a new client connects, currentTime = millis(); previousTime = currentTime; Serial.println("New Client."); // print a message out in the serial port String currentLine = ""; // make a String to hold incoming data from the client while (client.connected() && currentTime - previousTime <= timeoutTime) { // loop while the client's connected currentTime = millis(); if (client.available()) { // if there's bytes to read from the client, char c = client.read(); // read a byte, then Serial.write(c); // print it out the serial monitor header += c; if (c == '\n') { // if the byte is a newline character // if the current line is blank, you got two newline characters in a row. // that's the end of the client HTTP request, so send a response: if (currentLine.length() == 0) { // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK) // and a content-type so the client knows what's coming, then a blank line: client.println("HTTP/1.1 200 OK"); client.println("Content-type:text/html"); client.println("Connection: close"); client.println(); // turns the GPIOs on and off while (header.indexOf("GET /23/on") >= 0) { Serial.println("GPIO 23 on"); output23State = "blue"; digitalWrite(output23, HIGH); delay(1000); digitalWrite(output23, LOW); delay(1000); } //else if (header.indexOf("GET /23/off") >= 0) { //Serial.println("GPIO 23 off"); output23State = "off"; digitalWrite(output23, LOW); delay(500); //} // Display the HTML web page client.println(""); client.println(""); client.println(""); // CSS to style the on/off buttons // Feel free to change the background-color and font-size attributes to fit your preferences client.println(""); // Web Page Heading client.println("

MISSION CONTROL

"); client.println("

HALLOWEEN CANDY MORTAR

"); // Display current state, and ON/OFF buttons for GPIO 23 //client.println("

GPIO 23 - State " + output23State + "

"); // If the output23State is off, it displays the ON button if (output23State=="off") { client.println("

"); } else { client.println("

"); } /* Display current state, and ON/OFF buttons for GPIO 27 client.println("

GPIO 27 - State " + output27State + "

"); // If the output27State is off, it displays the ON button if (output27State=="off") { client.println("

"); } else { client.println("

"); } client.println(""); */ // The HTTP response ends with another blank line client.println(); // Break out of the while loop break; } else { // if you got a newline, then clear currentLine currentLine = ""; } } else if (c != '\r') { // if you got anything else but a carriage return character, currentLine += c; // add it to the end of the currentLine } } } // Clear the header variable header = ""; // Close the connection client.stop(); Serial.println("Client disconnected."); Serial.println(""); } }