Sensor.h

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#ifndef SENSOR_H
#define SENSOR_H
 
enum Direction{
    CW      = 1,  //clockwise
    CCW     = -1, // counter clockwise
    UNKNOWN = 0   //not yet known or invalid state
};
 
 
enum Pullup{
    INTERN, 
    EXTERN 
};
 
class Sensor{
    public:
 
        virtual float getAngle()=0;
        virtual float getVelocity();
 
        virtual int needsSearch();
    private:
        // velocity calculation variables
        float angle_prev=0; 
        long velocity_calc_timestamp=0; 
};
 
#endif