//#define F_CPU 20000000UL
#include <SoftwareSerial.h>
char control();
  
#define BUTTON PA3
#define x PA2
#define y PA3
#define btn PA4
#define val 0

#define tx PA0
#define rx PA1
SoftwareSerial ser(0, 1);
void setup() {
  // put your setup code here, to run once:
pinMode(btn,INPUT);

pinMode(x,INPUT);
pinMode(y,INPUT);

ser.begin(9600);

}
int casse=0;

int casse1=0;
void loop() {
  // put your main code here, to run repeatedly:
  while(!(control() == '1'))
  {}
  ser.print("b");
while(!(control() == '2'))
  {}
  ser.print(digitalRead(btn));
  casse = analogRead(x);
  casse1 = analogRead(y);
casse = map(casse ,0,1024,0,20);
casse1 = map(casse1 , 0,1024,0,20);
  //delay(200);
while(!(control() == '1'))
  {}  ser.print("x");
while(!(control() == '2'))
  {}  ser.print(casse);
  
while(!(control() == '1'))
  {}  ser.print("y");
while(!(control() == '2'))
  {}  ser.print(casse1);

  
}

char control ()
{
   while (!ser.available()) {
     
     
   }
   return ser.read();
      

}