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ESP8266_WebSocketServerAllFunctionsDemo.ino
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/****************************************************************************************************************************
ESP8266_WebSocketServerAllFunctionsDemo.ino
For ESP8266
Based on and modified from WebSockets libarary https://github.com/Links2004/arduinoWebSockets
to support other boards such as SAMD21, SAMD51, Adafruit's nRF52 boards, etc.
Built by Khoi Hoang https://github.com/khoih-prog/WebSockets_Generic
Licensed under MIT license
Originally Created on: 10.05.2018
Original Author: Markus Sattler
*****************************************************************************************************************************/
#if !defined(ESP8266)
#error This code is intended to run only on the ESP8266 boards ! Please check your Tools->Board setting.
#endif
#define _WEBSOCKETS_LOGLEVEL_ 2
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <WebSocketsServer_Generic.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <Hash.h>
#define LED_RED 15
#define LED_GREEN 12
#define LED_BLUE 13
ESP8266WiFiMulti WiFiMulti;
ESP8266WebServer server(80);
WebSocketsServer webSocket = WebSocketsServer(81);
void webSocketEvent(const uint8_t& num, const WStype_t& type, uint8_t * payload, const size_t& length)
{
(void) length;
switch (type)
{
case WStype_DISCONNECTED:
Serial.printf("[%u] Disconnected!\n", num);
break;
case WStype_CONNECTED:
{
IPAddress ip = webSocket.remoteIP(num);
Serial.printf("[%u] Connected from %d.%d.%d.%d url: %s\n", num, ip[0], ip[1], ip[2], ip[3], payload);
// send message to client
webSocket.sendTXT(num, "Connected");
}
break;
case WStype_TEXT:
Serial.printf("[%u] get Text: %s\n", num, payload);
if (payload[0] == '#')
{
// we get RGB data
// decode rgb data
uint32_t rgb = (uint32_t) strtol((const char *) &payload[1], NULL, 16);
analogWrite(LED_RED, ((rgb >> 16) & 0xFF));
analogWrite(LED_GREEN, ((rgb >> 8) & 0xFF));
analogWrite(LED_BLUE, ((rgb >> 0) & 0xFF));
}
break;
default:
break;
}
}
void setup()
{
pinMode(LED_RED, OUTPUT);
pinMode(LED_GREEN, OUTPUT);
pinMode(LED_BLUE, OUTPUT);
digitalWrite(LED_RED, 1);
digitalWrite(LED_GREEN, 1);
digitalWrite(LED_BLUE, 1);
//Serial.begin(921600);
Serial.begin(115200);
Serial.print("\nStart ESP8266_WebSocketServerAllFunctionsDemo on ");
Serial.println(ARDUINO_BOARD);
Serial.println(WEBSOCKETS_GENERIC_VERSION);
//Serial.setDebugOutput(true);
WiFiMulti.addAP("SSID", "passpasspass");
//WiFi.disconnect();
while (WiFiMulti.run() != WL_CONNECTED)
{
Serial.print(".");
delay(100);
}
Serial.println();
// start webSocket server
webSocket.begin();
webSocket.onEvent(webSocketEvent);
if (MDNS.begin("esp8266"))
{
Serial.println("MDNS responder started");
}
// handle index
server.on("/", []()
{
// send index.html
server.send(200, "text/html",
"<html><head><script>var connection = new WebSocket('ws://'+location.hostname+':81/', ['arduino']);connection.onopen = function () { connection.send('Connect ' + new Date()); }; connection.onerror = function (error) { console.log('WebSocket Error ', error);};connection.onmessage = function (e) { console.log('Server: ', e.data);};function sendRGB() { var r = parseInt(document.getElementById('r').value).toString(16); var g = parseInt(document.getElementById('g').value).toString(16); var b = parseInt(document.getElementById('b').value).toString(16); if(r.length < 2) { r = '0' + r; } if(g.length < 2) { g = '0' + g; } if(b.length < 2) { b = '0' + b; } var rgb = '#'+r+g+b; console.log('RGB: ' + rgb); connection.send(rgb); }</script></head><body>LED Control:<br/><br/>R: <input id=\"r\" type=\"range\" min=\"0\" max=\"255\" step=\"1\" oninput=\"sendRGB();\" /><br/>G: <input id=\"g\" type=\"range\" min=\"0\" max=\"255\" step=\"1\" oninput=\"sendRGB();\" /><br/>B: <input id=\"b\" type=\"range\" min=\"0\" max=\"255\" step=\"1\" oninput=\"sendRGB();\" /><br/></body></html>");
});
server.begin();
// Add service to MDNS
MDNS.addService("http", "tcp", 80);
MDNS.addService("ws", "tcp", 81);
digitalWrite(LED_RED, 0);
digitalWrite(LED_GREEN, 0);
digitalWrite(LED_BLUE, 0);
// server address, port and URL
Serial.print("WebSockets Server started @ IP address: ");
Serial.println(WiFi.localIP());
}
unsigned long last_10sec = 0;
unsigned int counter = 0;
void loop()
{
unsigned long t = millis();
webSocket.loop();
server.handleClient();
if ((t - last_10sec) > 10 * 1000)
{
counter++;
bool ping = (counter % 2);
int i = webSocket.connectedClients(ping);
Serial.printf("%d Connected websocket clients ping: %d\n", i, ping);
last_10sec = millis();
}
}