ESP32 Forum

Code: Select all

// AP Server
#include <WiFi.h>

const int LED_PIN = 16;

// Replace with your network credentials
const char* ssid     = "ESP32-Access-Point";
const char* password = "ESP32accesspoint";

WiFiServer server(80);

void setup() {
  Serial.begin(115200);
  delay(1000); // даем время на запуск последовательной коммуникации
  Serial.println("Setting AP (Access Point)…");

  pinMode(LED_PIN, OUTPUT);

  digitalWrite(LED_PIN, LOW);
  delay(100);
  digitalWrite(LED_PIN, HIGH);

  WiFi.softAP(ssid, password);

  IPAddress IP = WiFi.softAPIP();
  Serial.print("AP IP address ");
  Serial.println(IP);
  Serial.print("MAC address ");
  Serial.println(WiFi.softAPmacAddress());

  server.begin();

}

void loop() {

  WiFiClient client = server.available();    //Listen for incoming clients

  if (client)
  { //If a new client connects,
    Serial.println("New Client.");           //print a message out in the serial port
    while (client.connected())
    {
      Serial.println("Client connected.");
      Serial.println(client.available());

      if (client.available() > 0)
      {
        // read the bytes incoming from the client:
        char answer = client.read();

        // echo the bytes back to the client:
        server.write(answer);

        client.println("OnLED\r");
      }
    }
    client.stop();
    Serial.println("Client disconnected.");

    digitalWrite(LED_PIN, LOW);
    delay(5000);
    digitalWrite(LED_PIN, HIGH);
  }
}

Code: Select all

//Client
#include <ESP8266WiFi.h>
const int ledPin =  16;

const char* ssid = "ESP32-Access-Point";
const char* password =  "ESP32accesspoint";
String fromServer;

WiFiClient client;

IPAddress server(192, 168, 4, 1);

void setup()
{
  Serial.begin(115200);
  delay(1000);
  Serial.println();

  pinMode(ledPin, OUTPUT);

  digitalWrite(ledPin, HIGH);
  delay(100);
  digitalWrite(ledPin, LOW);

  Serial.printf("Connecting to %s ", ssid);
  WiFi.begin(ssid, password);
}

void loop()
{
  while (WiFi.status() != WL_CONNECTED)
  {
    delay(500);
    Serial.print(".");
  }
  Serial.println("connecting...");
  if (client.connect(server, 80))
  {
    Serial.println("connected to server");
    Serial.println(WiFi.localIP());
    client.write("data");
    fromServer = client.readStringUntil('\r');
    Serial.println(fromServer);
    if (fromServer == "OnLED") {

      digitalWrite(ledPin, HIGH);
      delay(5000);
      digitalWrite(ledPin, LOW);
    }
    else {
      digitalWrite(ledPin, LOW);
    }
  }
  else
  {
    Serial.println("failed to connect to server");
  }
  delay(1000);
}

Code: Select all

//Webserver - ESP32
//Author: Martin Chlebovec (martinius96)
//Web: https://arduino.php5.sk?lang=en
//Donate: https://paypal.me/chlebovec

#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
const char* ssid = "ESP_WiFi";
const char* password = "thereisnospoon";
WebServer server(80);

void handleRoot() {
  server.send(200, "text/html", "OnLED");
}
void setup(void) {
  Serial.begin(115200);
  WiFi.softAP(ssid, password);
  IPAddress IP = WiFi.softAPIP();
  server.on("/", handleRoot);
  server.begin();
  Serial.println("HTTP server running");
  Serial.print("IP address: ");
  Serial.println(IP);
}

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

Code: Select all

//Webclient - ESP32
//Author: Martin Chlebovec (martinius96)
//Web: https://arduino.php5.sk?lang=en
//Donate: https://paypal.me/chlebovec

#include <WiFi.h>
const char *ssid = "ESP_WiFi";
const char *password = "thereisnospoon";
const char * host = "192.168.4.1";
const int httpPort = 80;

void setup() {
  Serial.begin(115200);
  delay(10);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.println(".");
    delay(500);
  }
  Serial.println("WiFi connected sucessfully");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  Serial.println("Ready");
}

void loop() {
  WiFiClient client;
  if (client.connect(host, httpPort)) {
    String url = "/";
    client.print(String("GET ") + url + " HTTP/1.1\r\n" +
                 "Host: " + host + "\r\n" +
                 "Connection: close\r\n\r\n");
    while (client.connected()) {
      String line = client.readStringUntil('\n');
      Serial.println(line);
      if (line == "\r") {
        break;
      }
    }
    String line = client.readStringUntil('\n');
    Serial.println("Webserver reply:");
    Serial.println(line);
    Serial.println();
    if (line == "OnLED") {
      Serial.println("LED IS ON!");
    }
  }
  client.stop();
  delay(5000);
}