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效果



设备
ESP8266串口wifi模块 物联网 V3开发板 兼容 ModeMCU Lua CH340




代码

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>

const char* ssid = "PDCN";
const char* password = "1234567890";

ESP8266WebServer server(80);

String html = "<!DOCTYPE html><html lang=\"en\"><head><meta charset=\"UTF-8\"><title>Priess的小灯</title><body><a href=\"./pin?light=on\"><input type=\"button\" value=\"on\"></a> <a href=\"./pin?light=off\"><input type=\"button\" value=\"off\"></a></body></head></html>";

void pin(){

  if(server.arg("light")=="on"){
     digitalWrite(D4, LOW);
  server.send(200, "text/html", html);
  }else if(server.arg("light")=="off"){
     digitalWrite(D4, HIGH);
  server.send(200, "text/html", html);
  }
}


const int led = 13;

void handleRoot() {
  digitalWrite(led, 1);
  server.send(200, "text/html", html);
  digitalWrite(led, 0);
}

void handleNotFound(){
  digitalWrite(led, 1);
  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);
  digitalWrite(led, 0);
}

void setup(void){
  pinMode(D4, OUTPUT);
  digitalWrite(led, 0);
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  if (MDNS.begin("esp8266")) {
    Serial.println("MDNS responder started");
  }

  server.on("/", handleRoot);
server.on("/pin", HTTP_GET,pin);
  server.on("/inline", [](){
    server.send(200, "text/plain", "this works as well");
  });

  server.onNotFound(handleNotFound);

  server.begin();
  Serial.println("HTTP server started");
}

void loop(void){
  server.handleClient();
}





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