// A simple black-line following robot


#define IR_RIGHT   18   // Right IR sensor on Pin 18
#define IR_LEFT    19   // Left  IR sensor on Pin 19

#include "motor.h"


main()
{
   writes("line", 500);
   loop {
      loop { if(pinstate(IR_LEFT))  drive(-1,  1, 10); else break; } // turn left
      loop { if(pinstate(IR_RIGHT)) drive( 1, -1, 10); else break; } // turn right
      drive(1, 1, 10); // step forward
   }
}