Test wifi for cactus micro

test_wifi.ino

#include <SoftwareSerial.h>

// Important!! We use pin 13 for enable esp8266  
#define WIFI_ENABLE_PIN 13

#define DEBUG 1

#define SSID "YOUR-WIFI-SSID"
#define PASS "YOUR-WIFI-SECRET"

char serialbuffer[100];//serial buffer for request command
int wifiConnected = 0;

SoftwareSerial mySerial(11, 12); // rx, tx

void setup()
{
    mySerial.begin(9600);//connection to ESP8266
    Serial.begin(9600); //serial debug

    if(DEBUG) {
      while(!Serial);
    }

    pinMode(13, OUTPUT);
    digitalWrite(13, HIGH);
    delay(1000);//delay

    //set mode needed for new boards
    mySerial.println("AT+RST");
    delay(3000);//delay after mode change       
    mySerial.println("AT+CWMODE=1");
    delay(300);
    mySerial.println("AT+RST");
    delay(500);
}

boolean connectWifi() {     
 String cmd="AT+CWJAP=\"";
 cmd+=SSID;
 cmd+="\",\"";
 cmd+=PASS;
 cmd+="\"";
 Serial.println(cmd);
 mySerial.println(cmd);
           
 for(int i = 0; i < 20; i++) {
   Serial.print(".");
   if(mySerial.find("OK"))
   {
     wifiConnected = 1;
     break;
   }
   
   delay(50);
 }
 
 Serial.println(
   wifiConnected ? 
   "OK, Connected to WiFi." :
   "Can not connect to the WiFi."
 );
 
 return wifiConnected;
}

void loop()
{

    if(!wifiConnected) {
      mySerial.println("AT");
      delay(1000);
      if(mySerial.find("OK")){
        Serial.println("Module Test: OK");
        connectWifi();
      } 
    }

    if(!wifiConnected) {
      delay(500);
      return;
    }

    //output everything from ESP8266 to the Arduino Micro Serial output
    while (mySerial.available() > 0) {
      Serial.write(mySerial.read());
    }

}