Python termios 模块，PARENB 实例源码

我们从Python开源项目中，提取了以下4个代码示例，用于说明如何使用termios.PARENB。

项目：pyrepl 作者：dajose | 项目源码 | 文件源码

def prepare(self):
        # per-readline preparations:
        self.__svtermstate = tcgetattr(self.input_fd)
        raw = self.__svtermstate.copy()
        raw.iflag |= termios.ICRNL
        raw.iflag &= ~(termios.BRKINT | termios.INPCK |
                       termios.ISTRIP | termios.IXON)
        raw.oflag &= ~termios.OPOST
        raw.cflag &= ~(termios.CSIZE | termios.PARENB)
        raw.cflag |= (termios.CS8)
        raw.lflag &= ~(termios.ICANON | termios.ECHO |
                       termios.IEXTEN | (termios.ISIG * 1))
        raw.cc[termios.VMIN] = 1
        raw.cc[termios.VTIME] = 0
        tcsetattr(self.input_fd, termios.TCSADRAIN, raw)

        self.screen = []
        self.height, self.width = self.getheightwidth()

        self.__buffer = []

        self.__posxy = 0, 0
        self.__gone_tall = 0
        self.__move = self.__move_short
        self.__offset = 0

        self.__maybe_write_code(self._smkx)

        try:
            self.old_sigwinch = signal.signal(
                signal.SIGWINCH, self.__sigwinch)
        except ValueError:
            pass

项目：rpi3-webiopi 作者：thortex | 项目源码 | 文件源码

def __init__(self, device="/dev/ttyAMA0", baudrate=9600):
        if not device.startswith("/dev/"):
            device = "/dev/%s" % device

        if isinstance(baudrate, str):
            baudrate = int(baudrate)

        aname = "B%d" % baudrate
        if not hasattr(termios, aname):
            raise Exception("Unsupported baudrate")
        self.baudrate = baudrate

        Bus.__init__(self, "UART", device, os.O_RDWR | os.O_NOCTTY)
        fcntl.fcntl(self.fd, fcntl.F_SETFL, os.O_NDELAY)

        #backup  = termios.tcgetattr(self.fd)
        options = termios.tcgetattr(self.fd)
        # iflag
        options[0] = 0

        # oflag
        options[1] = 0

        # cflag
        options[2] |= (termios.CLOCAL | termios.CREAD)
        options[2] &= ~termios.PARENB
        options[2] &= ~termios.CSTOPB
        options[2] &= ~termios.CSIZE
        options[2] |= termios.CS8

        # lflag
        options[3] = 0

        speed = getattr(termios, aname)
        # input speed
        options[4] = speed
        # output speed
        options[5] = speed

        termios.tcsetattr(self.fd, termios.TCSADRAIN, options)

项目：Cayenne-Agent 作者：myDevicesIoT | 项目源码 | 文件源码

def __init__(self, device="/dev/ttyAMA0", baudrate=9600):
        if not device.startswith("/dev/"):
            device = "/dev/%s" % device

        if isinstance(baudrate, str):
            baudrate = int(baudrate)

        aname = "B%d" % baudrate
        if not hasattr(termios, aname):
            raise Exception("Unsupported baudrate")
        self.baudrate = baudrate

        Bus.__init__(self, "UART", device, os.O_RDWR | os.O_NOCTTY)
        fcntl.fcntl(self.fd, fcntl.F_SETFL, os.O_NDELAY)

        #backup  = termios.tcgetattr(self.fd)
        options = termios.tcgetattr(self.fd)
        # iflag
        options[0] = 0

        # oflag
        options[1] = 0

        # cflag
        options[2] |= (termios.CLOCAL | termios.CREAD)
        options[2] &= ~termios.PARENB
        options[2] &= ~termios.CSTOPB
        options[2] &= ~termios.CSIZE
        options[2] |= termios.CS8

        # lflag
        options[3] = 0

        speed = getattr(termios, aname)
        # input speed
        options[4] = speed
        # output speed
        options[5] = speed

        termios.tcsetattr(self.fd, termios.TCSADRAIN, options)

项目：cligraphy 作者：Netflix-Skunkworks | 项目源码 | 文件源码

def _fix_tty(self):
        """Set suitable tty options
        """
        assert self.tcattr is not None
        iflag, oflag, cflag, lflag, ispeed, ospeed, chars = self.tcattr  # pylint:disable=unpacking-non-sequence
        # equivalent to cfmakeraw
        iflag &= ~(termios.IGNBRK | termios.BRKINT | termios.PARMRK | termios.ISTRIP | termios.INLCR |
                   termios.IGNCR | termios.ICRNL | termios.IXON)
        oflag &= ~termios.OPOST
        lflag &= ~(termios.ECHO | termios.ECHONL | termios.ICANON | termios.ISIG | termios.IEXTEN)
        cflag &= ~(termios.CSIZE | termios.PARENB)
        cflag |= termios.CS8
        termios.tcsetattr(STDIN, termios.TCSANOW, [iflag, oflag, cflag, lflag, ispeed, ospeed, chars])