def _create_printer(self):
if self._printer:
return self._printer
station = get_current_station(self.default_store)
printer = self.default_store.find(ECFPrinter, station=station,
is_active=True).one()
if not printer:
return None
try:
self._printer = CouponPrinter(printer)
except SerialException as e:
warning(_('Error opening serial port'), str(e))
except DriverError as e:
warning(str(e))
return None
def create_coupon_printer(self, printer=None):
return CouponPrinter(printer or self.create_ecf_printer())
