ESP8266 - AP Mode 網頁伺服器

WebServer

Connection ESP8266 to ESP8266 Client Server can't Connect, Help me?

使用 ESP8266WebServer.h 而不是自己寫

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

IPAddress ip(192,168,1,81);         // choose IP address
IPAddress subnet(255,255,255,0);

ESP8266WebServer server(80);

void handleRoot() {
  String page = "<!DOCTYPE html>\n";

  page += "<html>\n<body>\n<h1>Some heading</h1><br>Generated by ESP8266\n</body>\n</html>";
  server.send(200, "text/html", page);
}

// what to do when accessed through http://ip_address/something_undefined
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);
}

void setup(void){
  Serial.begin(74880);                      // so you can see debug messages automatically sent by ESP8266
  WiFi.mode(WIFI_AP);
  WiFi.softAPConfig(ip, ip, subnet);        // declared as: bool softAPConfig (IPAddress local_ip, IPAddress gateway, IPAddress subnet)
  WiFi.softAP("SOME_NAME", "password", 7);  // network name, network password, wifi channel

  IPAddress myIP = WiFi.softAPIP();
  Serial.println();
  Serial.print("AP IP address: ");
  Serial.println(myIP);

  server.on("/", handleRoot);               // what to do when accessed through browser using http://IP_address

  // what to do when accessed through http://ip_address/test
  server.on("/test", [](){
    server.send(200, "text/plain", "This is another page");
  });

  server.on("/sa/1", [](){
    // ... <-- put here the code for NeoPixel = on
    server.send(200, "text/html", "NeoPixel is now on");
  });

  server.on("/sa/0", [](){
    // ... <-- put here the code for NeoPixel = off
    server.send(200, "text/html", "NeoPixel is now off");
  });

  server.onNotFound(handleNotFound);

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

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

#include <ESP8266WiFi.h>

#include <WiFiClient.h>

#include <ESP8266WebServer.h>

IPAddress ip(192,168,1,81); // choose IP address

IPAddress subnet(255,255,255,0);

ESP8266WebServer server(80);

void handleRoot() {

String page = "<!DOCTYPE html>\n";

page += "<html>\n<body>\n<h1>Some heading</h1><br>Generated by ESP8266\n</body>\n</html>";

server.send(200, "text/html", page);

}

// what to do when accessed through http://ip_address/something_undefined

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);

}

void setup(void){

Serial.begin(74880); // so you can see debug messages automatically sent by ESP8266

WiFi.mode(WIFI_AP);

WiFi.softAPConfig(ip, ip, subnet); // declared as: bool softAPConfig (IPAddress local_ip, IPAddress gateway, IPAddress subnet)

WiFi.softAP("SOME_NAME", "password", 7); // network name, network password, wifi channel

IPAddress myIP = WiFi.softAPIP();

Serial.println();

Serial.print("AP IP address: ");

Serial.println(myIP);

server.on("/", handleRoot); // what to do when accessed through browser using http://IP_address

// what to do when accessed through http://ip_address/test

server.on("/test", [](){

server.send(200, "text/plain", "This is another page");

});

server.on("/sa/1", [](){

// ... <-- put here the code for NeoPixel = on

server.send(200, "text/html", "NeoPixel is now on");

});

server.on("/sa/0", [](){

// ... <-- put here the code for NeoPixel = off

server.send(200, "text/html", "NeoPixel is now off");

});

server.onNotFound(handleNotFound);

server.begin();

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

}

void loop(void){

server.handleClient();

}

URL 的 $_GET()

ESP8266 Webserver: Getting query parameters

一般來說使用 handleSpecificArg() 是比較常用的

void handleGenericArgs() {

  String message = "";

  message += server.arg(0) + "\n";
  String rs_message = getValue(message, ',');
  message += rs_message;

  server.send(200, "text / plain", message);     //Response to the HTTP request
}

// 
void handleSpecificArg() {

  String message = "";

  if (server.arg("Temperature") == "") {   //Parameter not found
    message = "Temperature Argument not found";
  } else {    //Parameter found
    message = "Temperature Argument = ";
    message += server.arg("Temperature");     //Gets the value of the query parameter
  }
  server.send(200, "text / plain", message);        //Returns the HTTP response
}

server.on("/rs", handleGenericArgs);

void handleGenericArgs() {

String message = "";

message += server.arg(0) + "\n";

String rs_message = getValue(message, ',');

message += rs_message;

server.send(200, "text / plain", message); //Response to the HTTP request

}

void handleSpecificArg() {

String message = "";

if (server.arg("Temperature") == "") { //Parameter not found

message = "Temperature Argument not found";

} else { //Parameter found

message = "Temperature Argument = ";

message += server.arg("Temperature"); //Gets the value of the query parameter

}

server.send(200, "text / plain", message); //Returns the HTTP response

}

server.on("/rs", handleGenericArgs);

應用

有了 WiFi AP 也有了取得網址變數的方法，接下來就可以設計應用場景網址的變數使用。例如 http://192.168.2.1/url?led=on&light=1 ，可以表示開啟 led 以及亮 1 秒

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ESP8266 - AP Mode 網頁伺服器

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URL 的 $_GET()

應用

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