#include <SoftwareSerial.h>

  
#define x PA2
#define y PA3
#define btn PA4
#define tx PA0
#define rx PA1
SoftwareSerial ser(0, 1);

void setup() {
  // put your setup code here, to run once:

ser.begin(9600);
pinMode(x,OUTPUT);
pinMode(y,OUTPUT);
pinMode(btn,OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:

ser.print("1");

  if (ser.available()) {
     char val = ser.read();
      
     
      
     if (val == 'x')
     {
      ser.print("2");
      while(1) 
      if (ser.available()) {
         int mov =  (ser.parseInt());
      if(calc(mov)==1)
      ser.print("a");
      else
      ser.print("b");
      delay(10);
      ser.print("1");
         if (mov > 5)
         {digitalWrite(x,HIGH);
                     break;
}
         else
         {

         digitalWrite(x,LOW);
         break;
         }
      }
     } else if (val == 'y')
     {
      
      ser.print("2");
      while(1) 
      if (ser.available()) {
         int mov =  (ser.parseInt());
if(calc(mov)==1)
      ser.print("c");
      else
      ser.print("d");
      delay(10);
      ser.print("1");
         if (mov > 5)
         {digitalWrite(y,HIGH);
                     break;
}
         else
         {

         digitalWrite(y,LOW);
         break;
         }
      }
     } 
     else if (val == 'b')
     {
      
      ser.print("2");
      while(1) 
      if (ser.available()) {
         int mov =  (ser.parseInt());

      ser.print("1");
         if (mov == 1 )
         {digitalWrite(btn,HIGH);
         ser.print("e");
                     break;
}
         else
         {
ser.print("f");
         digitalWrite(btn,LOW);
         break;
         }
      }
     }
      
      
    
  }
delay(100);     
}





int calc (int mov)
{
  if(mov>6)
  return 0;
  else
  return 1;
}