90 lines
2.3 KiB
Python
90 lines
2.3 KiB
Python
# Copyright (c) Twisted Matrix Laboratories.
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# See LICENSE for details.
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"""
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Serial Port Protocol
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"""
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from __future__ import division, absolute_import
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# http://twistedmatrix.com/trac/ticket/3725#comment:24
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# Apparently applications use these names even though they should
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# be imported from pyserial
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__all__ = ["serial", "PARITY_ODD", "PARITY_EVEN", "PARITY_NONE",
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"STOPBITS_TWO", "STOPBITS_ONE", "FIVEBITS",
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"EIGHTBITS", "SEVENBITS", "SIXBITS",
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# Name this module is actually trying to export
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"SerialPort"]
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# all of them require pyserial at the moment, so check that first
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import serial
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from serial import PARITY_NONE, PARITY_EVEN, PARITY_ODD
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from serial import STOPBITS_ONE, STOPBITS_TWO
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from serial import FIVEBITS, SIXBITS, SEVENBITS, EIGHTBITS
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from twisted.python._oldstyle import _oldStyle
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from twisted.python.runtime import platform
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@_oldStyle
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class BaseSerialPort:
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"""
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Base class for Windows and POSIX serial ports.
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@ivar _serialFactory: a pyserial C{serial.Serial} factory, used to create
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the instance stored in C{self._serial}. Overrideable to enable easier
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testing.
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@ivar _serial: a pyserial C{serial.Serial} instance used to manage the
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options on the serial port.
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"""
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_serialFactory = serial.Serial
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def setBaudRate(self, baudrate):
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if hasattr(self._serial, "setBaudrate"):
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self._serial.setBaudrate(baudrate)
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else:
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self._serial.setBaudRate(baudrate)
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def inWaiting(self):
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return self._serial.inWaiting()
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def flushInput(self):
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self._serial.flushInput()
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def flushOutput(self):
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self._serial.flushOutput()
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def sendBreak(self):
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self._serial.sendBreak()
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def getDSR(self):
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return self._serial.getDSR()
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def getCD(self):
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return self._serial.getCD()
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def getRI(self):
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return self._serial.getRI()
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def getCTS(self):
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return self._serial.getCTS()
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def setDTR(self, on = 1):
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self._serial.setDTR(on)
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def setRTS(self, on = 1):
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self._serial.setRTS(on)
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# Expert appropriate implementation of SerialPort.
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if platform.isWindows():
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from twisted.internet._win32serialport import SerialPort
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else:
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from twisted.internet._posixserialport import SerialPort
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