ZumoMotors.h
#ifndef ZumoMotors_h
#define ZumoMotors_h

#include <Arduino.h>

class ZumoMotors
{
  public:  
  
    // constructor (doesn't do anything)
    ZumoMotors();
    
    // enable/disable flipping of motors
    static void flipLeftMotor(boolean flip);
    static void flipRightMotor(boolean flip);
    
    // set speed for left, right, or both motors
    static void setLeftSpeed(int speed);
    static void setRightSpeed(int speed);
    static void setSpeeds(int leftSpeed, int rightSpeed);
    
  private:

    static inline void init()
    {
      static boolean initialized = false;

      if (!initialized)
      {
        initialized = true;
        init2();
      }
    }
    
    // initializes timer1 for proper PWM generation
    static void init2();
};

#endif