text: #ifndef STEPPERDRIVER_H
  #define STEPPERDRIVER_H
  
  class StepperDriver{
      public:
          
          /** Initialise hardware */
          virtual int init();
          /** Enable hardware */
          virtual void enable();
          /** Disable hardware */
          virtual void disable();
  
          long pwm_frequency; //!< pwm frequency value in hertz
          float voltage_power_supply; //!< power supply voltage 
          float voltage_limit; //!< limiting voltage set to the motor
              
          /** 
           * Set phase voltages to the harware 
           * 
           * @param Ua phase A voltage
           * @param Ub phase B voltage
          */
          virtual void setPwm(float Ua, float Ub);
  };
  
  #endif