# Twisted, the Framework of Your Internet
# Copyright (C) 2001-2002 Matthew W. Lefkowitz
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of version 2.1 of the GNU Lesser General Public
# License as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""
Serial Port Protocol
"""

# system imports
import os, sys

# all of them require pyserial at the moment, so check that first
import serial
from serial import PARITY_NONE, PARITY_EVEN, PARITY_ODD
from serial import STOPBITS_ONE, STOPBITS_TWO
from serial import FIVEBITS, SIXBITS, SEVENBITS, EIGHTBITS

# common code for serial ports
class BaseSerialPort:
    def setBaudRate(self, baudrate):
        self._serial.setBaudRate(baudrate)

    def inWaiting(self):
        return self._serial.inWaiting()

    def flushInput(self):
        self._serial.flushInput()

    def flushOutput(self):
        self._serial.flushOutput()

    def sendBreak(self):
        self._serial.sendBreak()

    def getDSR(self):
        return self._serial.getDSR()

    def getCD(self):
        return self._serial.getCD()

    def getRI(self):
        return self._serial.getRI()

    def getCTS(self):
        return self._serial.getCTS()

    def setDTR(self, on = 1):
        self._serial.setDTR(on)

    def setRTS(self, on = 1):
        self._serial.setRTS(on)

class SerialPort(BaseSerialPort):
    pass

# replace SerialPort with appropriate serial port
if os.name == 'posix':
    from posixserialport import SerialPort
elif os.name == 'java':
    from javaserialport import SerialPort
elif sys.platform == 'win32':
    from win32serialport import SerialPort