def reset(self):
        """!
        \~english Reset display
        \~chinese 复位显示屏
        """
        if self._spi_reset == None: return
        GPIO.output( self._spi_reset, 1 )
        time.sleep(0.002)
        GPIO.output( self._spi_reset, 0 )
        time.sleep(0.015)
        GPIO.output( self._spi_reset, 1 )