[telemetry] Add Monsoon protocol library.

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

+#! python
+# Python Serial Port Extension for Win32, Linux, BSD, Jython and .NET/Mono
+# serial driver for .NET/Mono (IronPython), .NET >= 2
+# see __init__.py
+#
+# (C) 2008 Chris Liechti <cliechti@gmx.net>
+# this is distributed under a free software license, see license.txt
+
+import clr
+import System
+import System.IO.Ports
+from serial.serialutil import *
+
+
+def device(portnum):
+    """Turn a port number into a device name"""
+    return System.IO.Ports.SerialPort.GetPortNames()[portnum]
+
+
+# must invoke function with byte array, make a helper to convert strings
+# to byte arrays
+sab = System.Array[System.Byte]
+def as_byte_array(string):
+    return sab([ord(x) for x in string])  # XXX will require adaption when run with a 3.x compatible IronPython
+
+class IronSerial(SerialBase):
+    """Serial port implementation for .NET/Mono."""
+
+    BAUDRATES = (50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
+                9600, 19200, 38400, 57600, 115200)
+
+    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.")
+        try:
+            self._port_handle = System.IO.Ports.SerialPort(self.portstr)
+        except Exception, msg:
+            self._port_handle = None
+            raise SerialException("could not open port %s: %s" % (self.portstr, msg))
+
+        self._reconfigurePort()
+        self._port_handle.Open()
+        self._isOpen = True
+        if not self._rtscts:
+            self.setRTS(True)
+            self.setDTR(True)
+        self.flushInput()
+        self.flushOutput()
+
+    def _reconfigurePort(self):
+        """Set communication parameters on opened port."""
+        if not self._port_handle:
+            raise SerialException("Can only operate on a valid port handle")
+
+        #~ self._port_handle.ReceivedBytesThreshold = 1
+
+        if self._timeout is None:
+            self._port_handle.ReadTimeout = System.IO.Ports.SerialPort.InfiniteTimeout
+        else:
+            self._port_handle.ReadTimeout = int(self._timeout*1000)
+
+        # if self._timeout != 0 and self._interCharTimeout is not None:
+            # timeouts = (int(self._interCharTimeout * 1000),) + timeouts[1:]
+
+        if self._writeTimeout is None:
+            self._port_handle.WriteTimeout = System.IO.Ports.SerialPort.InfiniteTimeout
+        else:
+            self._port_handle.WriteTimeout = int(self._writeTimeout*1000)
+
+
+        # Setup the connection info.
+        try:
+            self._port_handle.BaudRate = self._baudrate
+        except IOError, e:
+            # catch errors from illegal baudrate settings
+            raise ValueError(str(e))
+
+        if self._bytesize == FIVEBITS:
+            self._port_handle.DataBits     = 5
+        elif self._bytesize == SIXBITS:
+            self._port_handle.DataBits     = 6
+        elif self._bytesize == SEVENBITS:
+            self._port_handle.DataBits     = 7
+        elif self._bytesize == EIGHTBITS:
+            self._port_handle.DataBits     = 8
+        else:
+            raise ValueError("Unsupported number of data bits: %r" % self._bytesize)
+
+        if self._parity == PARITY_NONE:
+            self._port_handle.Parity       = getattr(System.IO.Ports.Parity, 'None') # reserved keyword in Py3k
+        elif self._parity == PARITY_EVEN:
+            self._port_handle.Parity       = System.IO.Ports.Parity.Even
+        elif self._parity == PARITY_ODD:
+            self._port_handle.Parity       = System.IO.Ports.Parity.Odd
+        elif self._parity == PARITY_MARK:
+            self._port_handle.Parity       = System.IO.Ports.Parity.Mark
+        elif self._parity == PARITY_SPACE:
+            self._port_handle.Parity       = System.IO.Ports.Parity.Space
+        else:
+            raise ValueError("Unsupported parity mode: %r" % self._parity)
+
+        if self._stopbits == STOPBITS_ONE:
+            self._port_handle.StopBits     = System.IO.Ports.StopBits.One
+        elif self._stopbits == STOPBITS_ONE_POINT_FIVE:
+            self._port_handle.StopBits     = System.IO.Ports.StopBits.OnePointFive
+        elif self._stopbits == STOPBITS_TWO:
+            self._port_handle.StopBits     = System.IO.Ports.StopBits.Two
+        else:
+            raise ValueError("Unsupported number of stop bits: %r" % self._stopbits)
+
+        if self._rtscts and self._xonxoff:
+            self._port_handle.Handshake  = System.IO.Ports.Handshake.RequestToSendXOnXOff
+        elif self._rtscts:
+            self._port_handle.Handshake  = System.IO.Ports.Handshake.RequestToSend
+        elif self._xonxoff:
+            self._port_handle.Handshake  = System.IO.Ports.Handshake.XOnXOff
+        else:
+            self._port_handle.Handshake  = getattr(System.IO.Ports.Handshake, 'None')   # reserved keyword in Py3k
+
+    #~ def __del__(self):
+        #~ self.close()
+
+    def close(self):
+        """Close port"""
+        if self._isOpen:
+            if self._port_handle:
+                try:
+                    self._port_handle.Close()
+                except System.IO.Ports.InvalidOperationException:
+                    # ignore errors. can happen for unplugged USB serial devices
+                    pass
+                self._port_handle = None
+            self._isOpen = False
+
+    def makeDeviceName(self, port):
+        try:
+            return device(port)
+        except TypeError, e:
+            raise SerialException(str(e))
+
+    #  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
+
+    def inWaiting(self):
+        """Return the number of characters currently in the input buffer."""
+        if not self._port_handle: raise portNotOpenError
+        return self._port_handle.BytesToRead
+
+    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._port_handle: raise portNotOpenError
+        # must use single byte reads as this is the only way to read
+        # without applying encodings
+        data = bytearray()
+        while size:
+            try:
+                data.append(self._port_handle.ReadByte())
+            except System.TimeoutException, e:
+                break
+            else:
+                size -= 1
+        return bytes(data)
+
+    def write(self, data):
+        """Output the given string over the serial port."""
+        if not self._port_handle: raise portNotOpenError
+        if not isinstance(data, (bytes, bytearray)):
+            raise TypeError('expected %s or bytearray, got %s' % (bytes, type(data)))
+        try:
+            # must call overloaded method with byte array argument
+            # as this is the only one not applying encodings
+            self._port_handle.Write(as_byte_array(data), 0, len(data))
+        except System.TimeoutException, e:
+            raise writeTimeoutError
+        return len(data)
+
+    def flushInput(self):
+        """Clear input buffer, discarding all that is in the buffer."""
+        if not self._port_handle: raise portNotOpenError
+        self._port_handle.DiscardInBuffer()
+
+    def flushOutput(self):
+        """Clear output buffer, aborting the current output and
+        discarding all that is in the buffer."""
+        if not self._port_handle: raise portNotOpenError
+        self._port_handle.DiscardOutBuffer()
+
+    def sendBreak(self, duration=0.25):
+        """Send break condition. Timed, returns to idle state after given duration."""
+        if not self._port_handle: raise portNotOpenError
+        import time
+        self._port_handle.BreakState = True
+        time.sleep(duration)
+        self._port_handle.BreakState = False
+
+    def setBreak(self, level=True):
+        """Set break: Controls TXD. When active, to transmitting is possible."""
+        if not self._port_handle: raise portNotOpenError
+        self._port_handle.BreakState = bool(level)
+
+    def setRTS(self, level=True):
+        """Set terminal status line: Request To Send"""
+        if not self._port_handle: raise portNotOpenError
+        self._port_handle.RtsEnable = bool(level)
+
+    def setDTR(self, level=True):
+        """Set terminal status line: Data Terminal Ready"""
+        if not self._port_handle: raise portNotOpenError
+        self._port_handle.DtrEnable = bool(level)
+
+    def getCTS(self):
+        """Read terminal status line: Clear To Send"""
+        if not self._port_handle: raise portNotOpenError
+        return self._port_handle.CtsHolding
+
+    def getDSR(self):
+        """Read terminal status line: Data Set Ready"""
+        if not self._port_handle: raise portNotOpenError
+        return self._port_handle.DsrHolding
+
+    def getRI(self):
+        """Read terminal status line: Ring Indicator"""
+        if not self._port_handle: raise portNotOpenError
+        #~ return self._port_handle.XXX
+        return False #XXX an error would be better
+
+    def getCD(self):
+        """Read terminal status line: Carrier Detect"""
+        if not self._port_handle: raise portNotOpenError
+        return self._port_handle.CDHolding
+
+    # - - platform specific - - - -
+    # none
+
+
+# assemble Serial class with the platform specific implementation and the base
+# for file-like behavior. for Python 2.6 and newer, that provide the new I/O
+# library, derive from io.RawIOBase
+try:
+    import io
+except ImportError:
+    # classic version with our own file-like emulation
+    class Serial(IronSerial, FileLike):
+        pass
+else:
+    # io library present
+    class Serial(IronSerial, io.RawIOBase):
+        pass
+
+
+# Nur Testfunktion!!
+if __name__ == '__main__':
+    import sys
+
+    s = Serial(0)
+    sys.stdio.write('%s\n' % s)
+
+    s = Serial()
+    sys.stdio.write('%s\n' % s)
+
+
+    s.baudrate = 19200
+    s.databits = 7
+    s.close()
+    s.port = 0
+    s.open()
+    sys.stdio.write('%s\n' % s)
+