ESP8266 Community Forum

Posted: **Wed Jul 15, 2020 6:46 am**

Hello!
Please help, how I can connect to ESP8266 from PC via python program?
I have this program loaded in ESP8266:

#include "ESP8266WiFi.h"
 
const char* ssid = "home_wifi";
const char* password =  "12345678";
 
WiFiServer wifiServer(5684);

byte message_buffer[10];
int data_index;
int client_count;

void setup() {
 
  Serial.begin(115200);
 
  delay(1000);
 
  WiFi.begin(ssid, password);
 
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting..");
  }
 
  Serial.print("Connected to WiFi. IP:");
  Serial.println(WiFi.localIP());
 
  wifiServer.begin();
  client_count = 0;
}

void loop() 
{
  WiFiClient client = wifiServer.available();
  //Serial.println("čekám");
  while(!(client = wifiServer.available())){}
    if(client.connected())
    {
      Serial.println("Client Connected");
    }
    
    while(client.connected()){      
      while(client.available()>0){
        // read data from the connected client
        Serial.write(client.read()); 
      }
      //Send Data to connected client
      while(Serial.available()>0)
      {
        client.write(Serial.read());
      }
    }
    client.stop();
    Serial.println("\nClient disconnected");  
}

When I connect to ESP via Putty, Serial monitor prints correctly "Client Connected" (and then data, which I send and after closing Putty "Client disconnected").
But problem is, when I run my Python program:

Code: Select all

import socket

HOST = '192.168.1.6'  # The server's hostname or IP address
PORT = 5684 
s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT))
s.sendall(b'Hello, world')
s.close()

ESP8266 only sometimes register this coming socket...I must run my python program several times to have same result as when I connect to ESP8266 via putty...

Where is problem?
Please help!

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