Get the maximum number of steps the driver needs for a transition.

        :param start: The start value as uniform pwm value (0.0-1.0).
        :param end: The end value as uniform pwm value (0.0-1.0).
        :return: The maximum number of steps.

def steps(self, start, end):
        """
        Get the maximum number of steps the driver needs for a transition.

        :param start: The start value as uniform pwm value (0.0-1.0).
        :param end: The end value as uniform pwm value (0.0-1.0).
        :return: The maximum number of steps.
        """
        if not 0 <= start <= 1:
            raise ValueError('Values must be between 0 and 1.')
        if not 0 <= end <= 1:
            raise ValueError('Values must be between 0 and 1.')

        raw_start = self._to_single_raw_pwm(start)
        raw_end = self._to_single_raw_pwm(end)
        return abs(raw_start - raw_end)