code: def stepper_config(self, steps_per_revolution, stepper_pins):
          
          data = [self.STEPPER_CONFIGURE, steps_per_revolution & 0x7f, (steps_per_revolution >> 7) & 0x7f]
          for pin in range(len(stepper_pins)):
              data.append(stepper_pins[pin])
          self._command_handler.send_sysex(self._command_handler.STEPPER_DATA, data)
docs: Configure stepper motor prior to operation.
  
          :param steps_per_revolution: number of steps per motor revolution
  
          :param stepper_pins: a list of control pin numbers - either 4 or 2