ESP01s WebSocket 实现友好交互
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YES! 又是ESP01s Relay 继电器模块。（2.5/3）
好吧，其实是在翻店家给的小礼物里看见了一个好玩的东西。
用ESP01s实现一个WebSocket，最终效果如下。
2019-12-13_143436.png请叫我补丁小能手
ps：这代码撸的真头疼。
程序代码
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <WebSocketsServer.h>
#include <Hash.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#define USE_SERIAL Serial
static const char ssid[] = "360 N7 Pro";
static const char password[] = "123456780";
MDNSResponder mdns;
static void writeLED(bool);
ESP8266WiFiMulti WiFiMulti;
ESP8266WebServer server(80);
WebSocketsServer webSocket = WebSocketsServer(81);
static const char PROGMEM INDEX_HTML[] = R"rawliteral(
<!DOCTYPE html>
<html>
<head>
<meta name = "viewport" content = "width = device-width, initial-scale = 1.0, maximum-scale = 1.0, user-scalable=0">
<title>ESP8266 WebSocket Demo</title>
<style>
"body { background-color: #808080; font-family: Arial, Helvetica, Sans-Serif; Color: #000000; }"
</style>
<script>
var websock;
function start() {
websock = new WebSocket('ws://' + window.location.hostname + ':81/');
websock.onopen = function(evt) { console.log('websock open'); };
websock.onclose = function(evt) { console.log('websock close'); };
websock.onerror = function(evt) { console.log(evt); };
websock.onmessage = function(evt) {
console.log(evt);
var e = document.getElementById('ledstatus');
if (evt.data === 'ledon') {
e.style.color = 'red';
}
else if (evt.data === 'ledoff') {
e.style.color = 'black';
}
else {
console.log('unknown event');
}
};
}
function buttonclick(e) {
websock.send(e.id);
}
</script>
</head>
<body onload="javascript:start();">
<h1>ESP8266 WebSocket Demo</h1>
<div id="ledstatus"><b>LED</b></div>
<button id="ledon" type="button" onclick="buttonclick(this);">On</button>
<button id="ledoff" type="button" onclick="buttonclick(this);">Off</button>
</body>
</html>
)rawliteral";
// GPIO#0 is for Adafruit ESP8266 HUZZAH board. Your board LED might be on 13.
const int LEDPIN = 0;
// Current LED status
bool LEDStatus;
// Commands sent through Web Socket
const char LEDON[] = "ledon";
const char LEDOFF[] = "ledoff";
void webSocketEvent(uint8_t num, WStype_t type, uint8_t * payload, size_t length)
{
USE_SERIAL.printf("webSocketEvent(%d, %d, ...)\r\n", num, type);
switch (type) {
case WStype_DISCONNECTED:
USE_SERIAL.printf("[%u] Disconnected!\r\n", num);
break;
case WStype_CONNECTED:
{
IPAddress ip = webSocket.remoteIP(num);
USE_SERIAL.printf("[%u] Connected from %d.%d.%d.%d url: %s\r\n", num, ip[0], ip[1], ip[2], ip[3], payload);
// Send the current LED status
if (LEDStatus) {
webSocket.sendTXT(num, LEDON, strlen(LEDON));
}
else {
webSocket.sendTXT(num, LEDOFF, strlen(LEDOFF));
}
}
break;
case WStype_TEXT:
USE_SERIAL.printf("[%u] get Text: %s\r\n", num, payload);
if (strcmp(LEDON, (const char *)payload) == 0) {
writeLED(true);
}
else if (strcmp(LEDOFF, (const char *)payload) == 0) {
writeLED(false);
}
else {
USE_SERIAL.println("Unknown command");
}
// send data to all connected clients
webSocket.broadcastTXT(payload, length);
break;
case WStype_BIN:
USE_SERIAL.printf("[%u] get binary length: %u\r\n", num, length);
hexdump(payload, length);
// echo data back to browser
webSocket.sendBIN(num, payload, length);
break;
default:
USE_SERIAL.printf("Invalid WStype [%d]\r\n", type);
break;
}
}
void handleRoot()
{
server.send_P(200, "text/html", INDEX_HTML);
}
void handleNotFound()
{
String message = "File Not Found\n\n";
message += "URI: ";
message += server.uri();
message += "\nMethod: ";
message += (server.method() == HTTP_GET) ? "GET" : "POST";
message += "\nArguments: ";
message += server.args();
message += "\n";
for (uint8_t i = 0; i<server.args(); i++){
message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
}
server.send(404, "text/plain", message);
}
static void writeLED(bool LEDon)
{
LEDStatus = LEDon;
// Note inverted logic for Adafruit HUZZAH board
if (LEDon) {
digitalWrite(LEDPIN, 0);
}
else {
digitalWrite(LEDPIN, 1);
}
}
void setup()
{
pinMode(LEDPIN, OUTPUT);
writeLED(false);
USE_SERIAL.begin(115200);
//Serial.setDebugOutput(true);
USE_SERIAL.println();
USE_SERIAL.println();
USE_SERIAL.println();
for (uint8_t t = 4; t > 0; t--) {
USE_SERIAL.printf("[SETUP] BOOT WAIT %d...\r\n", t);
USE_SERIAL.flush();
delay(1000);
}
// WiFiMulti.addAP(ssid, password);
//
// while (WiFiMulti.run() != WL_CONNECTED) {
// Serial.print(".");
// delay(100);
// }
WiFi.begin(ssid,password);
//WiFi.softAP(ssid, password);
//IPAddress myIP = WiFi.softAPIP();
USE_SERIAL.print("AP IP address: ");
//USE_SERIAL.println(myIP);
USE_SERIAL.println("");
USE_SERIAL.print("Connected to ");
USE_SERIAL.println(ssid);
USE_SERIAL.print("IP address: ");
USE_SERIAL.println(WiFi.localIP());
if (mdns.begin("espWebSock", WiFi.localIP())) {
USE_SERIAL.println("MDNS responder started");
mdns.addService("http", "tcp", 80);
mdns.addService("ws", "tcp", 81);
}
else {
USE_SERIAL.println("MDNS.begin failed");
}
USE_SERIAL.print("Connect to http://");
USE_SERIAL.println(WiFi.localIP());
server.on("/", handleRoot);
server.onNotFound(handleNotFound);
server.begin();
webSocket.begin();
webSocket.onEvent(webSocketEvent);
}
void loop()
{
webSocket.loop();
server.handleClient();
}
Arduino IDE 编译烧录固件
这里我们不再啰嗦一遍，如何烧录上传固件了，需要的话可以看这里
效果展示
2019-12-13_144616.png
2019-12-13_144111.png