#include <SoftwareSerial.h>

SoftwareSerial ESP8266(10, 11);//10==>TX , 11==>RX
String mychar;//for store the esp8266 serial input


//String WifiName = "wifi name"; //for join to wifi modem
//String WifiPass = "wifi password";

/****************************************************************/
/*                             INIT                             */
/****************************************************************/
void setup()
{
  Serial.begin(115200);
  ESP8266.begin(115200);
  pinMode(13, OUTPUT); 
  initESP8266();
}
/****************************************************************/
/*                        LOOP                        */
/****************************************************************/
void loop()
{
   while(ESP8266.available())
   {    
     mychar = ESP8266.readString();
     if(mychar.length()>1){
        Serial.print(mychar);
        int colonPosition = mychar.indexOf(':');
        switch(mychar.charAt(colonPosition+1)){
          case 'a' :
              Serial.println('a');
              digitalWrite(13, HIGH); 
              break;
          case 'b' :
                Serial.println('b');
                digitalWrite(13, LOW); 
                break;
          case 'c' :
                ESP8266.println("AT+CIPCLOSE=0");
                break;
          default:
              break;
          }
        ESP8266.flush();
        mychar="";
      }   
    }
}
/****************************************************************/
/*                 SETUP THE ESP8266             */
/****************************************************************/
void initESP8266()
{  
  Serial.println("**********************************************************");  
  Serial.println("**************** SETTING UP WIFI MODULE ***************");
  Serial.println("**********************************************************");  
  SendToESP8266("AT+RST");
  WaitForESP8266(2000);
  Serial.println("**********************************************************");
//  SendToESP8266("AT+CWMODE=3");
//  WaitForESP8266(5000);
//  Serial.println("**********************************************************");
//  SendToESP8266("AT+CWJAP=\""+ WifiName + "\",\"" + WifiPass +"\"");
//  WaitForESP8266(10000);
//  Serial.println("**********************************************************");
  SendToESP8266("AT+CIFSR");//for sow the ip address thedefault is 192.168.4.1
  WaitForESP8266(1000);
  Serial.println("**********************************************************");
  SendToESP8266("AT+CIPMUX=1"); //enable multiple connection
  WaitForESP8266(1000);
  Serial.println("**********************************************************");
  SendToESP8266("AT+CIPSERVER=1,9999"); //open port 9999
  WaitForESP8266(1000);
  Serial.println("**********************************************************");
  Serial.println("***************** INITIALISATION COMPELETE ****************");
  Serial.println("**********************************************************");
  Serial.println("");
}

/****************************************************************/
/*        SEND AT COMMAND TO ESP8266          */
/****************************************************************/
void SendToESP8266(String commande)
{  
  ESP8266.println(commande);
}
/****************************************************************/
/*        WAIT FOR RESPONSE TIME ESP8266      */
/****************************************************************/
void WaitForESP8266(const int timeout)
{
  String reponse = "";
  long int time = millis();
  while( (time+timeout) > millis())
  {
    while(ESP8266.available())
    {
      char c = ESP8266.read();
      reponse+=c;
    }
  }
  Serial.print(reponse);   
}