ESP8266 Community Forum

- Wed Jan 04, 2017 1:58 pm #60407 Hello,
i'm trying to connect two esp8266 in my WLAN, but i dont get it.
I want, that the first esp8266 open the url (ip) of the other esp and so write a Pin=HIGH.
I read other posts and try the examples, but they didnt work.

Code for the Server:

Code: Select all#include <ESP8266WiFi.h>
#include<WiFiClient.h>
#include<ESP8266WebServer.h>`

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

ESP8266WebServer server(80);

void handle_led1(){
  digitalWrite(2, 1);
  server.send(200, "text/plain", String("Led Aus "));
}

void handle_led0(){
  digitalWrite(2, 0);
  server.send(200, "text/plain", String("Led An "));
}

void setup() {
  delay(1000);
  Serial.begin(115200);
  // prepare GPIO2
  pinMode(2, OUTPUT);
  digitalWrite(2, 0);
  /* You can remove the password parameter if you want the AP to be open. */
   WiFi.mode(WIFI_STA); // Esp in STA modus
  Serial.println();
  Serial.println();
  Serial.print("Verbinden mit: ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  server.begin();
  Serial.println("HTTP server started");
  server.on("/led1",handle_led1);
  server.on("/led0",handle_led0);
}

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

Part of the Code from the Client

Code: Select all        HTTPClient http;
        Serial.print("[HTTP] begin...\n");
        // configure traged server and url
        http.begin("192.168.178.45", 80, "/led0"); //HTTp
        int httpCode1 = http.GET();
        Serial.print("Get An: ");
        Serial.println(httpCode1);
        delay(1000);
        http.begin("192.168.178.45", 80, "/led1"); //HTTP
        int httpCode2 = http.GET();
        Serial.print("Get Aus: ");
        Serial.println(httpCode2);
        delay(1000);
  Serial.println();
  Serial.println("closing connection");


I get for the Get request:

Code: Select all[HTTP] begin...
Get An: -1
Get Aus: -1

closing connection


I hope someone can help me, i'm really losing hope.
Sorry for my bad english

- Fri Jan 06, 2017 3:01 am #60525 I am a newbie myself, so I am certainly no expert, but it occurs to me that you should be able to separate the two sides using a PC and a webbrowser for diagnosis. Have you done that?