erekesnevufile.cpp

#include "Wifi.h"

// set up a new serial port
void setup() {
  Wifi wifi;
  Serial.begin(9600); 
   
  delay(5000);
  wifi.init();
}

void loop() {
  if(Serial1.available() > 0){
    Serial.write(Serial1.read());
  }
}

Wifi.cpp

#include "Wifi.h"
#include "Arduino.h"

//Wifi beallitas
void Wifi::init() {
   char buf[256];
  Serial1.begin(9600);
  Serial1.setTimeout(250);
    
  Serial.println("WIFI: Command mode ON");
  
  delay(300);
  Serial1.write("$$$");  
  delay(300);

  Serial1.write("set ip dhcp 1\r");
  Serial1.write("set wlan phrase 71063690\r");
  Serial1.write("join Lumia720_7970\r");
  
  
    
  Serial1.write("exit\r");
}

int Wifi::getResponse(char* buf, int b_len) {
  int len;
  
  len = Serial1.readBytesUntil('\r', buf, b_len);
  //Serial.println(buf);
  
  return len;
}

Wifi.h

#ifndef Wifi_h
#define Wifi_h

class Wifi {
public:
  void init();
private:
  int getResponse(char* buf, int b_len);
};

#endif