Delete tools/telemetry.

tools/telemetry/third_party/pyserial/serial/serialposix.py

Index: tools/telemetry/third_party/pyserial/serial/serialposix.py
diff --git a/tools/telemetry/third_party/pyserial/serial/serialposix.py b/tools/telemetry/third_party/pyserial/serial/serialposix.py
deleted file mode 100755
index b9b4b282682dbeec291a503e1ca7533bcd676067..0000000000000000000000000000000000000000
--- a/tools/telemetry/third_party/pyserial/serial/serialposix.py
+++ /dev/null
@@ -1,703 +0,0 @@
-#!/usr/bin/env python
-#
-# Python Serial Port Extension for Win32, Linux, BSD, Jython
-# module for serial IO for POSIX compatible systems, like Linux
-# see __init__.py
-#
-# (C) 2001-2010 Chris Liechti <cliechti@gmx.net>
-# this is distributed under a free software license, see license.txt
-#
-# parts based on code from Grant B. Edwards  <grante@visi.com>:
-#  ftp://ftp.visi.com/users/grante/python/PosixSerial.py
-#
-# references: http://www.easysw.com/~mike/serial/serial.html
-
-import sys, os, fcntl, termios, struct, select, errno, time
-from serial.serialutil import *
-
-# Do check the Python version as some constants have moved.
-if (sys.hexversion < 0x020100f0):
-    import TERMIOS
-else:
-    TERMIOS = termios
-
-if (sys.hexversion < 0x020200f0):
-    import FCNTL
-else:
-    FCNTL = fcntl
-
-# try to detect the OS so that a device can be selected...
-# this code block should supply a device() and set_special_baudrate() function
-# for the platform
-plat = sys.platform.lower()
-
-if   plat[:5] == 'linux':    # Linux (confirmed)
-
-    def device(port):
-        return '/dev/ttyS%d' % port
-
-    TCGETS2 = 0x802C542A
-    TCSETS2 = 0x402C542B
-    BOTHER = 0o010000
-
-    def set_special_baudrate(port, baudrate):
-        # right size is 44 on x86_64, allow for some growth
-        import array
-        buf = array.array('i', [0] * 64)
-
-        try:
-            # get serial_struct
-            FCNTL.ioctl(port.fd, TCGETS2, buf)
-            # set custom speed
-            buf[2] &= ~TERMIOS.CBAUD
-            buf[2] |= BOTHER
-            buf[9] = buf[10] = baudrate
-
-            # set serial_struct
-            res = FCNTL.ioctl(port.fd, TCSETS2, buf)
-        except IOError, e:
-            raise ValueError('Failed to set custom baud rate (%s): %s' % (baudrate, e))
-
-    baudrate_constants = {
-        0:       0000000,  # hang up
-        50:      0000001,
-        75:      0000002,
-        110:     0000003,
-        134:     0000004,
-        150:     0000005,
-        200:     0000006,
-        300:     0000007,
-        600:     0000010,
-        1200:    0000011,
-        1800:    0000012,
-        2400:    0000013,
-        4800:    0000014,
-        9600:    0000015,
-        19200:   0000016,
-        38400:   0000017,
-        57600:   0010001,
-        115200:  0010002,
-        230400:  0010003,
-        460800:  0010004,
-        500000:  0010005,
-        576000:  0010006,
-        921600:  0010007,
-        1000000: 0010010,
-        1152000: 0010011,
-        1500000: 0010012,
-        2000000: 0010013,
-        2500000: 0010014,
-        3000000: 0010015,
-        3500000: 0010016,
-        4000000: 0010017
-    }
-
-elif plat == 'cygwin':       # cygwin/win32 (confirmed)
-
-    def device(port):
-        return '/dev/com%d' % (port + 1)
-
-    def set_special_baudrate(port, baudrate):
-        raise ValueError("sorry don't know how to handle non standard baud rate on this platform")
-
-    baudrate_constants = {
-        128000: 0x01003,
-        256000: 0x01005,
-        500000: 0x01007,
-        576000: 0x01008,
-        921600: 0x01009,
-        1000000: 0x0100a,
-        1152000: 0x0100b,
-        1500000: 0x0100c,
-        2000000: 0x0100d,
-        2500000: 0x0100e,
-        3000000: 0x0100f
-    }
-
-elif plat[:7] == 'openbsd':    # OpenBSD
-
-    def device(port):
-        return '/dev/cua%02d' % port
-
-    def set_special_baudrate(port, baudrate):
-        raise ValueError("sorry don't know how to handle non standard baud rate on this platform")
-
-    baudrate_constants = {}
-
-elif plat[:3] == 'bsd' or  \
-    plat[:7] == 'freebsd':
-
-    def device(port):
-        return '/dev/cuad%d' % port
-
-    def set_special_baudrate(port, baudrate):
-        raise ValueError("sorry don't know how to handle non standard baud rate on this platform")
-
-    baudrate_constants = {}
-
-elif plat[:6] == 'darwin':   # OS X
-
-    version = os.uname()[2].split('.')
-    # Tiger or above can support arbitrary serial speeds
-    if int(version[0]) >= 8:
-        def set_special_baudrate(port, baudrate):
-            # use IOKit-specific call to set up high speeds
-            import array, fcntl
-            buf = array.array('i', [baudrate])
-            IOSSIOSPEED = 0x80045402 #_IOW('T', 2, speed_t)
-            fcntl.ioctl(port.fd, IOSSIOSPEED, buf, 1)
-    else: # version < 8
-        def set_special_baudrate(port, baudrate):
-            raise ValueError("baud rate not supported")
-
-    def device(port):
-        return '/dev/cuad%d' % port
-
-    baudrate_constants = {}
-
-
-elif plat[:6] == 'netbsd':   # NetBSD 1.6 testing by Erk
-
-    def device(port):
-        return '/dev/dty%02d' % port
-
-    def set_special_baudrate(port, baudrate):
-        raise ValueError("sorry don't know how to handle non standard baud rate on this platform")
-
-    baudrate_constants = {}
-
-elif plat[:4] == 'irix':     # IRIX (partially tested)
-
-    def device(port):
-        return '/dev/ttyf%d' % (port+1) #XXX different device names depending on flow control
-
-    def set_special_baudrate(port, baudrate):
-        raise ValueError("sorry don't know how to handle non standard baud rate on this platform")
-
-    baudrate_constants = {}
-
-elif plat[:2] == 'hp':       # HP-UX (not tested)
-
-    def device(port):
-        return '/dev/tty%dp0' % (port+1)
-
-    def set_special_baudrate(port, baudrate):
-        raise ValueError("sorry don't know how to handle non standard baud rate on this platform")
-
-    baudrate_constants = {}
-
-elif plat[:5] == 'sunos':    # Solaris/SunOS (confirmed)
-
-    def device(port):
-        return '/dev/tty%c' % (ord('a')+port)
-
-    def set_special_baudrate(port, baudrate):
-        raise ValueError("sorry don't know how to handle non standard baud rate on this platform")
-
-    baudrate_constants = {}
-
-elif plat[:3] == 'aix':      # AIX
-
-    def device(port):
-        return '/dev/tty%d' % (port)
-
-    def set_special_baudrate(port, baudrate):
-        raise ValueError("sorry don't know how to handle non standard baud rate on this platform")
-
-    baudrate_constants = {}
-
-else:
-    # platform detection has failed...
-    sys.stderr.write("""\
-don't know how to number ttys on this system.
-! Use an explicit path (eg /dev/ttyS1) or send this information to
-! the author of this module:
-
-sys.platform = %r
-os.name = %r
-serialposix.py version = %s
-
-also add the device name of the serial port and where the
-counting starts for the first serial port.
-e.g. 'first serial port: /dev/ttyS0'
-and with a bit luck you can get this module running...
-""" % (sys.platform, os.name, VERSION))
-    # no exception, just continue with a brave attempt to build a device name
-    # even if the device name is not correct for the platform it has chances
-    # to work using a string with the real device name as port parameter.
-    def device(portum):
-        return '/dev/ttyS%d' % portnum
-    def set_special_baudrate(port, baudrate):
-        raise SerialException("sorry don't know how to handle non standard baud rate on this platform")
-    baudrate_constants = {}
-    #~ raise Exception, "this module does not run on this platform, sorry."
-
-# whats up with "aix", "beos", ....
-# they should work, just need to know the device names.
-
-
-# load some constants for later use.
-# try to use values from TERMIOS, use defaults from linux otherwise
-TIOCMGET  = hasattr(TERMIOS, 'TIOCMGET') and TERMIOS.TIOCMGET or 0x5415
-TIOCMBIS  = hasattr(TERMIOS, 'TIOCMBIS') and TERMIOS.TIOCMBIS or 0x5416
-TIOCMBIC  = hasattr(TERMIOS, 'TIOCMBIC') and TERMIOS.TIOCMBIC or 0x5417
-TIOCMSET  = hasattr(TERMIOS, 'TIOCMSET') and TERMIOS.TIOCMSET or 0x5418
-
-#TIOCM_LE = hasattr(TERMIOS, 'TIOCM_LE') and TERMIOS.TIOCM_LE or 0x001
-TIOCM_DTR = hasattr(TERMIOS, 'TIOCM_DTR') and TERMIOS.TIOCM_DTR or 0x002
-TIOCM_RTS = hasattr(TERMIOS, 'TIOCM_RTS') and TERMIOS.TIOCM_RTS or 0x004
-#TIOCM_ST = hasattr(TERMIOS, 'TIOCM_ST') and TERMIOS.TIOCM_ST or 0x008
-#TIOCM_SR = hasattr(TERMIOS, 'TIOCM_SR') and TERMIOS.TIOCM_SR or 0x010
-
-TIOCM_CTS = hasattr(TERMIOS, 'TIOCM_CTS') and TERMIOS.TIOCM_CTS or 0x020
-TIOCM_CAR = hasattr(TERMIOS, 'TIOCM_CAR') and TERMIOS.TIOCM_CAR or 0x040
-TIOCM_RNG = hasattr(TERMIOS, 'TIOCM_RNG') and TERMIOS.TIOCM_RNG or 0x080
-TIOCM_DSR = hasattr(TERMIOS, 'TIOCM_DSR') and TERMIOS.TIOCM_DSR or 0x100
-TIOCM_CD  = hasattr(TERMIOS, 'TIOCM_CD') and TERMIOS.TIOCM_CD or TIOCM_CAR
-TIOCM_RI  = hasattr(TERMIOS, 'TIOCM_RI') and TERMIOS.TIOCM_RI or TIOCM_RNG
-#TIOCM_OUT1 = hasattr(TERMIOS, 'TIOCM_OUT1') and TERMIOS.TIOCM_OUT1 or 0x2000
-#TIOCM_OUT2 = hasattr(TERMIOS, 'TIOCM_OUT2') and TERMIOS.TIOCM_OUT2 or 0x4000
-if hasattr(TERMIOS, 'TIOCINQ'):
-    TIOCINQ = TERMIOS.TIOCINQ
-else:
-    TIOCINQ = hasattr(TERMIOS, 'FIONREAD') and TERMIOS.FIONREAD or 0x541B
-TIOCOUTQ   = hasattr(TERMIOS, 'TIOCOUTQ') and TERMIOS.TIOCOUTQ or 0x5411
-
-TIOCM_zero_str = struct.pack('I', 0)
-TIOCM_RTS_str = struct.pack('I', TIOCM_RTS)
-TIOCM_DTR_str = struct.pack('I', TIOCM_DTR)
-
-TIOCSBRK  = hasattr(TERMIOS, 'TIOCSBRK') and TERMIOS.TIOCSBRK or 0x5427
-TIOCCBRK  = hasattr(TERMIOS, 'TIOCCBRK') and TERMIOS.TIOCCBRK or 0x5428
-
-
-class PosixSerial(SerialBase):
-    """Serial port class POSIX implementation. Serial port configuration is 
-    done with termios and fcntl. Runs on Linux and many other Un*x like
-    systems."""
-
-    def open(self):
-        """Open port with current settings. This may throw a SerialException
-           if the port cannot be opened."""
-        if self._port is None:
-            raise SerialException("Port must be configured before it can be used.")
-        if self._isOpen:
-            raise SerialException("Port is already open.")
-        self.fd = None
-        # open
-        try:
-            self.fd = os.open(self.portstr, os.O_RDWR|os.O_NOCTTY|os.O_NONBLOCK)
-        except IOError, msg:
-            self.fd = None
-            raise SerialException(msg.errno, "could not open port %s: %s" % (self._port, msg))
-        #~ fcntl.fcntl(self.fd, FCNTL.F_SETFL, 0)  # set blocking
-
-        try:
-            self._reconfigurePort()
-        except:
-            try:
-                os.close(self.fd)
-            except:
-                # ignore any exception when closing the port
-                # also to keep original exception that happened when setting up
-                pass
-            self.fd = None
-            raise
-        else:
-            self._isOpen = True
-        self.flushInput()
-
-
-    def _reconfigurePort(self):
-        """Set communication parameters on opened port."""
-        if self.fd is None:
-            raise SerialException("Can only operate on a valid file descriptor")
-        custom_baud = None
-
-        vmin = vtime = 0                # timeout is done via select
-        if self._interCharTimeout is not None:
-            vmin = 1
-            vtime = int(self._interCharTimeout * 10)
-        try:
-            orig_attr = termios.tcgetattr(self.fd)
-            iflag, oflag, cflag, lflag, ispeed, ospeed, cc = orig_attr
-        except termios.error, msg:      # if a port is nonexistent but has a /dev file, it'll fail here
-            raise SerialException("Could not configure port: %s" % msg)
-        # set up raw mode / no echo / binary
-        cflag |=  (TERMIOS.CLOCAL|TERMIOS.CREAD)
-        lflag &= ~(TERMIOS.ICANON|TERMIOS.ECHO|TERMIOS.ECHOE|TERMIOS.ECHOK|TERMIOS.ECHONL|
-                     TERMIOS.ISIG|TERMIOS.IEXTEN) #|TERMIOS.ECHOPRT
-        for flag in ('ECHOCTL', 'ECHOKE'): # netbsd workaround for Erk
-            if hasattr(TERMIOS, flag):
-                lflag &= ~getattr(TERMIOS, flag)
-
-        oflag &= ~(TERMIOS.OPOST)
-        iflag &= ~(TERMIOS.INLCR|TERMIOS.IGNCR|TERMIOS.ICRNL|TERMIOS.IGNBRK)
-        if hasattr(TERMIOS, 'IUCLC'):
-            iflag &= ~TERMIOS.IUCLC
-        if hasattr(TERMIOS, 'PARMRK'):
-            iflag &= ~TERMIOS.PARMRK
-
-        # setup baud rate
-        try:
-            ispeed = ospeed = getattr(TERMIOS, 'B%s' % (self._baudrate))
-        except AttributeError:
-            try:
-                ispeed = ospeed = baudrate_constants[self._baudrate]
-            except KeyError:
-                #~ raise ValueError('Invalid baud rate: %r' % self._baudrate)
-                # may need custom baud rate, it isn't in our list.
-                ispeed = ospeed = getattr(TERMIOS, 'B38400')
-                try:
-                    custom_baud = int(self._baudrate) # store for later
-                except ValueError:
-                    raise ValueError('Invalid baud rate: %r' % self._baudrate)
-                else:
-                    if custom_baud < 0:
-                        raise ValueError('Invalid baud rate: %r' % self._baudrate)
-
-        # setup char len
-        cflag &= ~TERMIOS.CSIZE
-        if self._bytesize == 8:
-            cflag |= TERMIOS.CS8
-        elif self._bytesize == 7:
-            cflag |= TERMIOS.CS7
-        elif self._bytesize == 6:
-            cflag |= TERMIOS.CS6
-        elif self._bytesize == 5:
-            cflag |= TERMIOS.CS5
-        else:
-            raise ValueError('Invalid char len: %r' % self._bytesize)
-        # setup stopbits
-        if self._stopbits == STOPBITS_ONE:
-            cflag &= ~(TERMIOS.CSTOPB)
-        elif self._stopbits == STOPBITS_ONE_POINT_FIVE:
-            cflag |=  (TERMIOS.CSTOPB)  # XXX same as TWO.. there is no POSIX support for 1.5
-        elif self._stopbits == STOPBITS_TWO:
-            cflag |=  (TERMIOS.CSTOPB)
-        else:
-            raise ValueError('Invalid stop bit specification: %r' % self._stopbits)
-        # setup parity
-        iflag &= ~(TERMIOS.INPCK|TERMIOS.ISTRIP)
-        if self._parity == PARITY_NONE:
-            cflag &= ~(TERMIOS.PARENB|TERMIOS.PARODD)
-        elif self._parity == PARITY_EVEN:
-            cflag &= ~(TERMIOS.PARODD)
-            cflag |=  (TERMIOS.PARENB)
-        elif self._parity == PARITY_ODD:
-            cflag |=  (TERMIOS.PARENB|TERMIOS.PARODD)
-        else:
-            raise ValueError('Invalid parity: %r' % self._parity)
-        # setup flow control
-        # xonxoff
-        if hasattr(TERMIOS, 'IXANY'):
-            if self._xonxoff:
-                iflag |=  (TERMIOS.IXON|TERMIOS.IXOFF) #|TERMIOS.IXANY)
-            else:
-                iflag &= ~(TERMIOS.IXON|TERMIOS.IXOFF|TERMIOS.IXANY)
-        else:
-            if self._xonxoff:
-                iflag |=  (TERMIOS.IXON|TERMIOS.IXOFF)
-            else:
-                iflag &= ~(TERMIOS.IXON|TERMIOS.IXOFF)
-        # rtscts
-        if hasattr(TERMIOS, 'CRTSCTS'):
-            if self._rtscts:
-                cflag |=  (TERMIOS.CRTSCTS)
-            else:
-                cflag &= ~(TERMIOS.CRTSCTS)
-        elif hasattr(TERMIOS, 'CNEW_RTSCTS'):   # try it with alternate constant name
-            if self._rtscts:
-                cflag |=  (TERMIOS.CNEW_RTSCTS)
-            else:
-                cflag &= ~(TERMIOS.CNEW_RTSCTS)
-        # XXX should there be a warning if setting up rtscts (and xonxoff etc) fails??
-
-        # buffer
-        # vmin "minimal number of characters to be read. = for non blocking"
-        if vmin < 0 or vmin > 255:
-            raise ValueError('Invalid vmin: %r ' % vmin)
-        cc[TERMIOS.VMIN] = vmin
-        # vtime
-        if vtime < 0 or vtime > 255:
-            raise ValueError('Invalid vtime: %r' % vtime)
-        cc[TERMIOS.VTIME] = vtime
-        # activate settings
-        if [iflag, oflag, cflag, lflag, ispeed, ospeed, cc] != orig_attr:
-            termios.tcsetattr(self.fd, TERMIOS.TCSANOW, [iflag, oflag, cflag, lflag, ispeed, ospeed, cc])
-
-        # apply custom baud rate, if any
-        if custom_baud is not None:
-            set_special_baudrate(self, custom_baud)
-
-    def close(self):
-        """Close port"""
-        if self._isOpen:
-            if self.fd is not None:
-                os.close(self.fd)
-                self.fd = None
-            self._isOpen = False
-
-    def makeDeviceName(self, port):
-        return device(port)
-
-    #  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
-
-    def inWaiting(self):
-        """Return the number of characters currently in the input buffer."""
-        #~ s = fcntl.ioctl(self.fd, TERMIOS.FIONREAD, TIOCM_zero_str)
-        s = fcntl.ioctl(self.fd, TIOCINQ, TIOCM_zero_str)
-        return struct.unpack('I',s)[0]
-
-    # select based implementation, proved to work on many systems
-    def read(self, size=1):
-        """Read size bytes from the serial port. If a timeout is set it may
-           return less characters as requested. With no timeout it will block
-           until the requested number of bytes is read."""
-        if not self._isOpen: raise portNotOpenError
-        read = bytearray()
-        while len(read) < size:
-            try:
-                ready,_,_ = select.select([self.fd],[],[], self._timeout)
-                # If select was used with a timeout, and the timeout occurs, it
-                # returns with empty lists -> thus abort read operation.
-                # For timeout == 0 (non-blocking operation) also abort when there
-                # is nothing to read.
-                if not ready:
-                    break   # timeout
-                buf = os.read(self.fd, size-len(read))
-                # read should always return some data as select reported it was
-                # ready to read when we get to this point.
-                if not buf:
-                    # Disconnected devices, at least on Linux, show the
-                    # behavior that they are always ready to read immediately
-                    # but reading returns nothing.
-                    raise SerialException('device reports readiness to read but returned no data (device disconnected or multiple access on port?)')
-                read.extend(buf)
-            except select.error, e:
-                # ignore EAGAIN errors. all other errors are shown
-                # see also http://www.python.org/dev/peps/pep-3151/#select
-                if e[0] != errno.EAGAIN:
-                    raise SerialException('read failed: %s' % (e,))
-            except OSError, e:
-                # ignore EAGAIN errors. all other errors are shown
-                if e.errno != errno.EAGAIN:
-                    raise SerialException('read failed: %s' % (e,))
-        return bytes(read)
-
-    def write(self, data):
-        """Output the given string over the serial port."""
-        if not self._isOpen: raise portNotOpenError
-        d = to_bytes(data)
-        tx_len = len(d)
-        if self._writeTimeout is not None and self._writeTimeout > 0:
-            timeout = time.time() + self._writeTimeout
-        else:
-            timeout = None
-        while tx_len > 0:
-            try:
-                n = os.write(self.fd, d)
-                if timeout:
-                    # when timeout is set, use select to wait for being ready
-                    # with the time left as timeout
-                    timeleft = timeout - time.time()
-                    if timeleft < 0:
-                        raise writeTimeoutError
-                    _, ready, _ = select.select([], [self.fd], [], timeleft)
-                    if not ready:
-                        raise writeTimeoutError
-                else:
-                    # wait for write operation
-                    _, ready, _ = select.select([], [self.fd], [], None)
-                    if not ready:
-                        raise SerialException('write failed (select)')
-                d = d[n:]
-                tx_len -= n
-            except OSError, v:
-                if v.errno != errno.EAGAIN:
-                    raise SerialException('write failed: %s' % (v,))
-        return len(data)
-
-    def flush(self):
-        """Flush of file like objects. In this case, wait until all data
-           is written."""
-        self.drainOutput()
-
-    def flushInput(self):
-        """Clear input buffer, discarding all that is in the buffer."""
-        if not self._isOpen: raise portNotOpenError
-        termios.tcflush(self.fd, TERMIOS.TCIFLUSH)
-
-    def flushOutput(self):
-        """Clear output buffer, aborting the current output and
-        discarding all that is in the buffer."""
-        if not self._isOpen: raise portNotOpenError
-        termios.tcflush(self.fd, TERMIOS.TCOFLUSH)
-
-    def sendBreak(self, duration=0.25):
-        """Send break condition. Timed, returns to idle state after given duration."""
-        if not self._isOpen: raise portNotOpenError
-        termios.tcsendbreak(self.fd, int(duration/0.25))
-
-    def setBreak(self, level=1):
-        """Set break: Controls TXD. When active, no transmitting is possible."""
-        if self.fd is None: raise portNotOpenError
-        if level:
-            fcntl.ioctl(self.fd, TIOCSBRK)
-        else:
-            fcntl.ioctl(self.fd, TIOCCBRK)
-
-    def setRTS(self, level=1):
-        """Set terminal status line: Request To Send"""
-        if not self._isOpen: raise portNotOpenError
-        if level:
-            fcntl.ioctl(self.fd, TIOCMBIS, TIOCM_RTS_str)
-        else:
-            fcntl.ioctl(self.fd, TIOCMBIC, TIOCM_RTS_str)
-
-    def setDTR(self, level=1):
-        """Set terminal status line: Data Terminal Ready"""
-        if not self._isOpen: raise portNotOpenError
-        if level:
-            fcntl.ioctl(self.fd, TIOCMBIS, TIOCM_DTR_str)
-        else:
-            fcntl.ioctl(self.fd, TIOCMBIC, TIOCM_DTR_str)
-
-    def getCTS(self):
-        """Read terminal status line: Clear To Send"""
-        if not self._isOpen: raise portNotOpenError
-        s = fcntl.ioctl(self.fd, TIOCMGET, TIOCM_zero_str)
-        return struct.unpack('I',s)[0] & TIOCM_CTS != 0
-
-    def getDSR(self):
-        """Read terminal status line: Data Set Ready"""
-        if not self._isOpen: raise portNotOpenError
-        s = fcntl.ioctl(self.fd, TIOCMGET, TIOCM_zero_str)
-        return struct.unpack('I',s)[0] & TIOCM_DSR != 0
-
-    def getRI(self):
-        """Read terminal status line: Ring Indicator"""
-        if not self._isOpen: raise portNotOpenError
-        s = fcntl.ioctl(self.fd, TIOCMGET, TIOCM_zero_str)
-        return struct.unpack('I',s)[0] & TIOCM_RI != 0
-
-    def getCD(self):
-        """Read terminal status line: Carrier Detect"""
-        if not self._isOpen: raise portNotOpenError
-        s = fcntl.ioctl(self.fd, TIOCMGET, TIOCM_zero_str)
-        return struct.unpack('I',s)[0] & TIOCM_CD != 0
-
-    # - - platform specific - - - -
-
-    def outWaiting(self):
-        """Return the number of characters currently in the output buffer."""
-        #~ s = fcntl.ioctl(self.fd, TERMIOS.FIONREAD, TIOCM_zero_str)
-        s = fcntl.ioctl(self.fd, TIOCOUTQ, TIOCM_zero_str)
-        return struct.unpack('I',s)[0]
-
-    def drainOutput(self):
-        """internal - not portable!"""
-        if not self._isOpen: raise portNotOpenError
-        termios.tcdrain(self.fd)
-
-    def nonblocking(self):
-        """internal - not portable!"""
-        if not self._isOpen: raise portNotOpenError
-        fcntl.fcntl(self.fd, FCNTL.F_SETFL, os.O_NONBLOCK)
-
-    def fileno(self):
-        """\
-        For easier use of the serial port instance with select.
-        WARNING: this function is not portable to different platforms!
-        """
-        if not self._isOpen: raise portNotOpenError
-        return self.fd
-
-    def setXON(self, level=True):
-        """\
-        Manually control flow - when software flow control is enabled.
-        This will send XON (true) and XOFF (false) to the other device.
-        WARNING: this function is not portable to different platforms!
-        """
-        if not self.hComPort: raise portNotOpenError
-        if enable:
-            termios.tcflow(self.fd, TERMIOS.TCION)
-        else:
-            termios.tcflow(self.fd, TERMIOS.TCIOFF)
-
-    def flowControlOut(self, enable):
-        """\
-        Manually control flow of outgoing data - when hardware or software flow
-        control is enabled.
-        WARNING: this function is not portable to different platforms!
-        """
-        if not self._isOpen: raise portNotOpenError
-        if enable:
-            termios.tcflow(self.fd, TERMIOS.TCOON)
-        else:
-            termios.tcflow(self.fd, TERMIOS.TCOOFF)
-
-
-# assemble Serial class with the platform specifc implementation and the base
-# for file-like behavior. for Python 2.6 and newer, that provide the new I/O
-# library, derrive from io.RawIOBase
-try:
-    import io
-except ImportError:
-    # classic version with our own file-like emulation
-    class Serial(PosixSerial, FileLike):
-        pass
-else:
-    # io library present
-    class Serial(PosixSerial, io.RawIOBase):
-        pass
-
-class PosixPollSerial(Serial):
-    """poll based read implementation. not all systems support poll properly.
-    however this one has better handling of errors, such as a device
-    disconnecting while it's in use (e.g. USB-serial unplugged)"""
-
-    def read(self, size=1):
-        """Read size bytes from the serial port. If a timeout is set it may
-           return less characters as requested. With no timeout it will block
-           until the requested number of bytes is read."""
-        if self.fd is None: raise portNotOpenError
-        read = bytearray()
-        poll = select.poll()
-        poll.register(self.fd, select.POLLIN|select.POLLERR|select.POLLHUP|select.POLLNVAL)
-        if size > 0:
-            while len(read) < size:
-                # print "\tread(): size",size, "have", len(read)    #debug
-                # wait until device becomes ready to read (or something fails)
-                for fd, event in poll.poll(self._timeout*1000):
-                    if event & (select.POLLERR|select.POLLHUP|select.POLLNVAL):
-                        raise SerialException('device reports error (poll)')
-                    #  we don't care if it is select.POLLIN or timeout, that's
-                    #  handled below
-                buf = os.read(self.fd, size - len(read))
-                read.extend(buf)
-                if ((self._timeout is not None and self._timeout >= 0) or 
-                    (self._interCharTimeout is not None and self._interCharTimeout > 0)) and not buf:
-                    break   # early abort on timeout
-        return bytes(read)
-
-
-if __name__ == '__main__':
-    s = Serial(0,
-                 baudrate=19200,        # baud rate
-                 bytesize=EIGHTBITS,    # number of data bits
-                 parity=PARITY_EVEN,    # enable parity checking
-                 stopbits=STOPBITS_ONE, # number of stop bits
-                 timeout=3,             # set a timeout value, None for waiting forever
-                 xonxoff=0,             # enable software flow control
-                 rtscts=0,              # enable RTS/CTS flow control
-               )
-    s.setRTS(1)
-    s.setDTR(1)
-    s.flushInput()
-    s.flushOutput()
-    s.write('hello')
-    sys.stdout.write('%r\n' % s.read(5))
-    sys.stdout.write('%s\n' % s.inWaiting())
-    del s
-