def _pulse_enable(self):
        """Pulse the `enable` flag to process data."""
        GPIO.output(self.pins.e, 0)
        c.usleep(1)
        GPIO.output(self.pins.e, 1)
        c.usleep(1)
        GPIO.output(self.pins.e, 0)
        c.usleep(100)
Pulse the `enable` flag to process data.