HelixLinkESP8266Server.ino

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

#define ASSID "HelixLink"
#define APSK "********"

const char *ssid = ASSID;
const char *password = APSK;

// the router's gateway address:
IPAddress gateway(192, 168, 0, 1);
// the subnet:
IPAddress subnet(255, 255, 255, 0);

//the IP address is dependent on your network
IPAddress ip(192, 168, 0, 1);

WiFiServer server(23);
WiFiClient Telnet;

void handleTelnet(){
  if (server.hasClient()){
    // client is connected
    if (!Telnet || !Telnet.connected()){
      if(Telnet) Telnet.stop();          // client disconnected
      Telnet = server.available(); // ready for new client
    } else {
      server.available().stop();  // have client, block new conections
    }
  }

  if (Telnet && Telnet.connected() && Telnet.available()){

    if(Telnet.available()){
      String str = Telnet.readStringUntil('\n');
      Serial.println(str); 
    }
  } 
  if(Telnet && Telnet.connected() && Serial.available()>0){
    String str = Serial.readStringUntil('\n');
    Telnet.println(str);
    Telnet.flush();
  }
}


void setup() {
    WiFi.mode(WIFI_AP);
    WiFi.softAP(ssid,password);
    WiFi.softAPConfig(ip, gateway, subnet);
    server.begin();
    Serial.begin(9600);
    Serial.println();
    Serial.println("OK");
}

void loop() {
    handleTelnet();
    //delay(30);
}