Wirelessx on pop-7 with machnum wheel

#include <pop7.h>
int x;
void setup(){
  pinMode(2,INPUT_PULLUP);
}
void loop(){
   while(uart1_ready()>0){x=uart1_read();}
    switch (x){
      case 0x08: motor(1,60);motor(2,100);motor(3,60);motor(4,100);break;
      case 0x02: motor(1,-100);motor(2,100);motor(3,60);motor(4,-100);break;
      case 0x04: motor(1,100);motor(2,-100);motor(3,-60);motor(4,100);break;
      case 0x01: motor(1,-60);motor(2,-100);motor(3,-60);motor(4,-100);break;
      default: AO();
     }
}