/** * WiFi Doorbell for ESP32 * by Tilman Liero * www.tilman.de **/ #include #include #include #include DFRobotDFPlayerMini dfPlayer; int volume = 22; const char* ssid = "SSID"; const char* password = "PASSWORD"; WiFiServer server(80); String header; String webhook = "http://www.google.com/"; WiFiClient webClient; HTTPClient http; void setup() { // start serial output Serial.begin(115200); Serial.println(); Serial.println("Connect dfplayer"); Serial1.begin(9600, SERIAL_8N1, 18, 19); // speed, type, TX, RX dfPlayer.begin(Serial1); delay(100); dfPlayer.setTimeOut(500); // Set serial communication time out 500ms dfPlayer.volume(volume); // Set volume value (0~30). dfPlayer.EQ(DFPLAYER_EQ_NORMAL); dfPlayer.outputDevice(DFPLAYER_DEVICE_SD); Serial.println("Connect WiFi"); WiFi.hostname("Doorbell"); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.print("WiFi connected, IP address: "); Serial.println(WiFi.localIP()); WiFi.setAutoReconnect(true); WiFi.persistent(true); server.begin(); delay(500); dfPlayer.play(2); // Play the second mp3 Serial.println("Setup completed"); } void loop() { WiFiClient client = server.available(); // Listen for incoming clients if (client) { String currentLine = ""; // make a String to hold incoming data from the client while (client.connected()) { // loop while the client's connected 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; charset=utf-8"); client.println("Connection: close"); client.println(); // turns the GPIOs on and off if (header.indexOf("GET /bell/on") >= 0) { dfPlayer.play(1); // play the first mp3 Serial.println("RING"); } else if (header.indexOf("GET /play/") >= 0) { // yes, I know this is not RESTful String str1 = header; str1 = str1.substring(header.indexOf("GET /play/") + 10); int fileNo = str1.substring(0, str1.indexOf(" ")).toInt(); Serial.print("Play file "); Serial.println(fileNo); if (fileNo <= 1) { dfPlayer.play(1); } else { dfPlayer.play(fileNo); } } else if (header.indexOf("GET /setvolume/") >= 0) { String str1 = header; str1 = str1.substring(header.indexOf("GET /setvolume/") + 15); volume = str1.substring(0, str1.indexOf(" ")).toInt(); if (volume < 0) { volume = 0; } else if (volume > 30) { volume = 30; } dfPlayer.volume(volume); Serial.print("Volume set to "); Serial.println(volume); } // Display the HTML web page client.println(""); client.println(""); client.println(""); client.println("Doorbell"); client.println(""); client.println("

Doorbell

"); client.println("

Volume: " + String(volume) + "

"); client.println("

"); client.println(""); // The HTTP response ends with another blank line client.println(); // call webhook after ringing if (header.indexOf("GET /bell/on") >= 0) { if (http.begin(webClient, webhook)) { int httpCode = http.GET(); if (httpCode > 0) { if (httpCode == HTTP_CODE_OK) { String payload = http.getString(); //Serial.println(payload); } } else { Serial.printf("HTTP Error: ", http.errorToString(httpCode).c_str()); } // close connection http.end(); } else { Serial.println("Could not send HTTP request"); } } 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(""); } }